| Message ID | 20210126165835.687514-5-u.kleine-koenig@pengutronix.de |
|---|---|
| State | New |
| Headers | show |
| Series | amba: minor fix and various cleanups | expand |
Hi On 1/26/21 4:58 PM, Uwe Kleine-König wrote: > All amba drivers return 0 in their remove callback. Together with the > driver core ignoring the return value anyhow, it doesn't make sense to > return a value here. > > Change the remove prototype to return void, which makes it explicit that > returning an error value doesn't work as expected. This simplifies changing > the core remove callback to return void, too. > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > Acked-by: Mark Brown <broonie@kernel.org> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > drivers/hwtracing/coresight/coresight-etm4x-core.c | 4 +--- You are most likely to have a conflict for the above file, with what is in coresight/next. It should be easy to resolve. Otherwise, the changes look good for the drivers/hwtracing/coresight/* Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
On 26-01-21, 17:58, Uwe Kleine-König wrote: > All amba drivers return 0 in their remove callback. Together with the > driver core ignoring the return value anyhow, it doesn't make sense to > return a value here. > > Change the remove prototype to return void, which makes it explicit that > returning an error value doesn't work as expected. This simplifies changing > the core remove callback to return void, too. > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > Acked-by: Mark Brown <broonie@kernel.org> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > --- > drivers/amba/bus.c | 5 ++--- > drivers/char/hw_random/nomadik-rng.c | 3 +-- > drivers/dma/pl330.c | 3 +-- For dmaengine: Acked-By: Vinod Koul <vkoul@kernel.org>
Hello, On Tue, Jan 26, 2021 at 05:08:40PM +0000, Suzuki K Poulose wrote: > On 1/26/21 4:58 PM, Uwe Kleine-König wrote: > > All amba drivers return 0 in their remove callback. Together with the > > driver core ignoring the return value anyhow, it doesn't make sense to > > return a value here. > > > > Change the remove prototype to return void, which makes it explicit that > > returning an error value doesn't work as expected. This simplifies changing > > the core remove callback to return void, too. > > > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > > Acked-by: Mark Brown <broonie@kernel.org> > > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > > Acked-by: Linus Walleij <linus.walleij@linaro.org> > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > > > > drivers/hwtracing/coresight/coresight-etm4x-core.c | 4 +--- > > You are most likely to have a conflict for the above file, with what is > in coresight/next. It should be easy to resolve. I'm surprised to see that the remove callback introduced in 2952ecf5df33 ("coresight: etm4x: Refactor probing routine") has an __exit annotation. With .suppress_bind_attrs = true you don't need a remove callback at all. (And without .suppress_bind_attrs = true the remove callback must have no __exit annotation.) This make me looking at commit 45fe7befe0db ("coresight: remove broken __exit annotations") by Arnd. Unless I miss something the better change would have been to remove the unused remove callbacks instead of dropping their __exit annotation?! Anyhow, my conflict resolution looks as follows: diff --cc drivers/hwtracing/coresight/coresight-etm4x-core.c index 82787cba537d,473ab7480a36..000000000000 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@@ -1703,6 -1903,28 +1903,27 @@@ static int __exit etm4_remove_dev(struc cpus_read_unlock(); coresight_unregister(drvdata->csdev); + + return 0; + } + -static int __exit etm4_remove_amba(struct amba_device *adev) ++static void __exit etm4_remove_amba(struct amba_device *adev) + { + struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev); + + if (drvdata) - return etm4_remove_dev(drvdata); - return 0; ++ etm4_remove_dev(drvdata); + } + + static int __exit etm4_remove_platform_dev(struct platform_device *pdev) + { + int ret = 0; + struct etmv4_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (drvdata) + ret = etm4_remove_dev(drvdata); + pm_runtime_disable(&pdev->dev); + return ret; } static const struct amba_id etm4_ids[] = { If this series should make it in for 5.12 we probably need an immutable branch between hwtracing and amba. > Otherwise, the changes look good for the drivers/hwtracing/coresight/* > > Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> Thanks Uwe
On Tue, Jan 26, 2021 at 06:56:52PM +0100, Uwe Kleine-König wrote: > I'm surprised to see that the remove callback introduced in 2952ecf5df33 > ("coresight: etm4x: Refactor probing routine") has an __exit annotation. In general, remove callbacks should not have an __exit annotation. __exit _can_ be discarded at link time for built-in stuff.
On Tue, Jan 26, 2021 at 05:58:34PM +0100, Uwe Kleine-König wrote: > All amba drivers return 0 in their remove callback. Together with the > driver core ignoring the return value anyhow, it doesn't make sense to > return a value here. > > Change the remove prototype to return void, which makes it explicit that > returning an error value doesn't work as expected. This simplifies changing > the core remove callback to return void, too. > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > Acked-by: Mark Brown <broonie@kernel.org> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> For watchdog: Acked-by: Guenter Roeck <linux@roeck-us.net> Guenter > --- > drivers/amba/bus.c | 5 ++--- > drivers/char/hw_random/nomadik-rng.c | 3 +-- > drivers/dma/pl330.c | 3 +-- > drivers/gpu/drm/pl111/pl111_drv.c | 4 +--- > drivers/hwtracing/coresight/coresight-catu.c | 3 +-- > drivers/hwtracing/coresight/coresight-cpu-debug.c | 4 +--- > drivers/hwtracing/coresight/coresight-cti-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-etb10.c | 4 +--- > drivers/hwtracing/coresight/coresight-etm3x-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-etm4x-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-funnel.c | 4 ++-- > drivers/hwtracing/coresight/coresight-replicator.c | 4 ++-- > drivers/hwtracing/coresight/coresight-stm.c | 4 +--- > drivers/hwtracing/coresight/coresight-tmc-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-tpiu.c | 4 +--- > drivers/i2c/busses/i2c-nomadik.c | 4 +--- > drivers/input/serio/ambakmi.c | 3 +-- > drivers/memory/pl172.c | 4 +--- > drivers/memory/pl353-smc.c | 4 +--- > drivers/mmc/host/mmci.c | 4 +--- > drivers/rtc/rtc-pl030.c | 4 +--- > drivers/rtc/rtc-pl031.c | 4 +--- > drivers/spi/spi-pl022.c | 5 ++--- > drivers/tty/serial/amba-pl010.c | 4 +--- > drivers/tty/serial/amba-pl011.c | 3 +-- > drivers/vfio/platform/vfio_amba.c | 3 +-- > drivers/video/fbdev/amba-clcd.c | 4 +--- > drivers/watchdog/sp805_wdt.c | 4 +--- > include/linux/amba/bus.h | 2 +- > sound/arm/aaci.c | 4 +--- > 30 files changed, 34 insertions(+), 80 deletions(-) > > diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c > index 8c4a42df47c6..48b5d4b4e889 100644 > --- a/drivers/amba/bus.c > +++ b/drivers/amba/bus.c > @@ -300,11 +300,10 @@ static int amba_remove(struct device *dev) > { > struct amba_device *pcdev = to_amba_device(dev); > struct amba_driver *drv = to_amba_driver(dev->driver); > - int ret = 0; > > pm_runtime_get_sync(dev); > if (drv->remove) > - ret = drv->remove(pcdev); > + drv->remove(pcdev); > pm_runtime_put_noidle(dev); > > /* Undo the runtime PM settings in amba_probe() */ > @@ -315,7 +314,7 @@ static int amba_remove(struct device *dev) > amba_put_disable_pclk(pcdev); > dev_pm_domain_detach(dev, true); > > - return ret; > + return 0; > } > > static void amba_shutdown(struct device *dev) > diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c > index b0ded41eb865..67947a19aa22 100644 > --- a/drivers/char/hw_random/nomadik-rng.c > +++ b/drivers/char/hw_random/nomadik-rng.c > @@ -69,11 +69,10 @@ static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int nmk_rng_remove(struct amba_device *dev) > +static void nmk_rng_remove(struct amba_device *dev) > { > amba_release_regions(dev); > clk_disable(rng_clk); > - return 0; > } > > static const struct amba_id nmk_rng_ids[] = { > diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c > index bc0f66af0f11..fd8d2bc3be9f 100644 > --- a/drivers/dma/pl330.c > +++ b/drivers/dma/pl330.c > @@ -3195,7 +3195,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int pl330_remove(struct amba_device *adev) > +static void pl330_remove(struct amba_device *adev) > { > struct pl330_dmac *pl330 = amba_get_drvdata(adev); > struct dma_pl330_chan *pch, *_p; > @@ -3235,7 +3235,6 @@ static int pl330_remove(struct amba_device *adev) > > if (pl330->rstc) > reset_control_assert(pl330->rstc); > - return 0; > } > > static const struct amba_id pl330_ids[] = { > diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c > index 40e6708fbbe2..1fb5eacefd2d 100644 > --- a/drivers/gpu/drm/pl111/pl111_drv.c > +++ b/drivers/gpu/drm/pl111/pl111_drv.c > @@ -320,7 +320,7 @@ static int pl111_amba_probe(struct amba_device *amba_dev, > return ret; > } > > -static int pl111_amba_remove(struct amba_device *amba_dev) > +static void pl111_amba_remove(struct amba_device *amba_dev) > { > struct device *dev = &amba_dev->dev; > struct drm_device *drm = amba_get_drvdata(amba_dev); > @@ -331,8 +331,6 @@ static int pl111_amba_remove(struct amba_device *amba_dev) > drm_panel_bridge_remove(priv->bridge); > drm_dev_put(drm); > of_reserved_mem_device_release(dev); > - > - return 0; > } > > /* > diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c > index a61313f320bd..8e19e8cdcce5 100644 > --- a/drivers/hwtracing/coresight/coresight-catu.c > +++ b/drivers/hwtracing/coresight/coresight-catu.c > @@ -567,12 +567,11 @@ static int catu_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int catu_remove(struct amba_device *adev) > +static void catu_remove(struct amba_device *adev) > { > struct catu_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > coresight_unregister(drvdata->csdev); > - return 0; > } > > static struct amba_id catu_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c > index e1d232411d8d..2dcf13de751f 100644 > --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c > +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c > @@ -627,7 +627,7 @@ static int debug_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int debug_remove(struct amba_device *adev) > +static void debug_remove(struct amba_device *adev) > { > struct device *dev = &adev->dev; > struct debug_drvdata *drvdata = amba_get_drvdata(adev); > @@ -642,8 +642,6 @@ static int debug_remove(struct amba_device *adev) > > if (!--debug_count) > debug_func_exit(); > - > - return 0; > } > > static const struct amba_cs_uci_id uci_id_debug[] = { > diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c > index 61dbc1afd8da..30e48809ba00 100644 > --- a/drivers/hwtracing/coresight/coresight-cti-core.c > +++ b/drivers/hwtracing/coresight/coresight-cti-core.c > @@ -836,7 +836,7 @@ static void cti_device_release(struct device *dev) > if (drvdata->csdev_release) > drvdata->csdev_release(dev); > } > -static int cti_remove(struct amba_device *adev) > +static void cti_remove(struct amba_device *adev) > { > struct cti_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -845,8 +845,6 @@ static int cti_remove(struct amba_device *adev) > mutex_unlock(&ect_mutex); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > static int cti_probe(struct amba_device *adev, const struct amba_id *id) > diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c > index 0cf6f0b947b6..51c801c05e5c 100644 > --- a/drivers/hwtracing/coresight/coresight-etb10.c > +++ b/drivers/hwtracing/coresight/coresight-etb10.c > @@ -803,7 +803,7 @@ static int etb_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int etb_remove(struct amba_device *adev) > +static void etb_remove(struct amba_device *adev) > { > struct etb_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -814,8 +814,6 @@ static int etb_remove(struct amba_device *adev) > */ > misc_deregister(&drvdata->miscdev); > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c > index 5bf5a5a4ce6d..683a69e88efd 100644 > --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c > +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c > @@ -909,7 +909,7 @@ static void clear_etmdrvdata(void *info) > etmdrvdata[cpu] = NULL; > } > > -static int etm_remove(struct amba_device *adev) > +static void etm_remove(struct amba_device *adev) > { > struct etm_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -932,8 +932,6 @@ static int etm_remove(struct amba_device *adev) > cpus_read_unlock(); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c > index b20b6ff17cf6..82787cba537d 100644 > --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c > +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c > @@ -1680,7 +1680,7 @@ static void clear_etmdrvdata(void *info) > etmdrvdata[cpu] = NULL; > } > > -static int etm4_remove(struct amba_device *adev) > +static void etm4_remove(struct amba_device *adev) > { > struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -1703,8 +1703,6 @@ static int etm4_remove(struct amba_device *adev) > cpus_read_unlock(); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > static const struct amba_id etm4_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c > index 071c723227db..01f8f9285168 100644 > --- a/drivers/hwtracing/coresight/coresight-funnel.c > +++ b/drivers/hwtracing/coresight/coresight-funnel.c > @@ -370,9 +370,9 @@ static int dynamic_funnel_probe(struct amba_device *adev, > return funnel_probe(&adev->dev, &adev->res); > } > > -static int dynamic_funnel_remove(struct amba_device *adev) > +static void dynamic_funnel_remove(struct amba_device *adev) > { > - return funnel_remove(&adev->dev); > + funnel_remove(&adev->dev); > } > > static const struct amba_id dynamic_funnel_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c > index 7e2a2b7f503f..34fc2f6f3ea9 100644 > --- a/drivers/hwtracing/coresight/coresight-replicator.c > +++ b/drivers/hwtracing/coresight/coresight-replicator.c > @@ -388,9 +388,9 @@ static int dynamic_replicator_probe(struct amba_device *adev, > return replicator_probe(&adev->dev, &adev->res); > } > > -static int dynamic_replicator_remove(struct amba_device *adev) > +static void dynamic_replicator_remove(struct amba_device *adev) > { > - return replicator_remove(&adev->dev); > + replicator_remove(&adev->dev); > } > > static const struct amba_id dynamic_replicator_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c > index 99791773f682..423df0d30d9c 100644 > --- a/drivers/hwtracing/coresight/coresight-stm.c > +++ b/drivers/hwtracing/coresight/coresight-stm.c > @@ -951,15 +951,13 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int stm_remove(struct amba_device *adev) > +static void stm_remove(struct amba_device *adev) > { > struct stm_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > coresight_unregister(drvdata->csdev); > > stm_unregister_device(&drvdata->stm); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c > index 8169dff5a9f6..e29b3914fc0f 100644 > --- a/drivers/hwtracing/coresight/coresight-tmc-core.c > +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c > @@ -559,7 +559,7 @@ static void tmc_shutdown(struct amba_device *adev) > spin_unlock_irqrestore(&drvdata->spinlock, flags); > } > > -static int tmc_remove(struct amba_device *adev) > +static void tmc_remove(struct amba_device *adev) > { > struct tmc_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -570,8 +570,6 @@ static int tmc_remove(struct amba_device *adev) > */ > misc_deregister(&drvdata->miscdev); > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > static const struct amba_id tmc_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c > index d5dfee9ee556..f77c4b0ea4aa 100644 > --- a/drivers/hwtracing/coresight/coresight-tpiu.c > +++ b/drivers/hwtracing/coresight/coresight-tpiu.c > @@ -173,13 +173,11 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) > return PTR_ERR(drvdata->csdev); > } > > -static int tpiu_remove(struct amba_device *adev) > +static void tpiu_remove(struct amba_device *adev) > { > struct tpiu_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c > index d4b1b0865f67..a3363b20f168 100644 > --- a/drivers/i2c/busses/i2c-nomadik.c > +++ b/drivers/i2c/busses/i2c-nomadik.c > @@ -1055,7 +1055,7 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int nmk_i2c_remove(struct amba_device *adev) > +static void nmk_i2c_remove(struct amba_device *adev) > { > struct resource *res = &adev->res; > struct nmk_i2c_dev *dev = amba_get_drvdata(adev); > @@ -1068,8 +1068,6 @@ static int nmk_i2c_remove(struct amba_device *adev) > i2c_clr_bit(dev->virtbase + I2C_CR, I2C_CR_PE); > clk_disable_unprepare(dev->clk); > release_mem_region(res->start, resource_size(res)); > - > - return 0; > } > > static struct i2c_vendor_data vendor_stn8815 = { > diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c > index ecdeca147ed7..4408245b61d2 100644 > --- a/drivers/input/serio/ambakmi.c > +++ b/drivers/input/serio/ambakmi.c > @@ -159,7 +159,7 @@ static int amba_kmi_probe(struct amba_device *dev, > return ret; > } > > -static int amba_kmi_remove(struct amba_device *dev) > +static void amba_kmi_remove(struct amba_device *dev) > { > struct amba_kmi_port *kmi = amba_get_drvdata(dev); > > @@ -168,7 +168,6 @@ static int amba_kmi_remove(struct amba_device *dev) > iounmap(kmi->base); > kfree(kmi); > amba_release_regions(dev); > - return 0; > } > > static int __maybe_unused amba_kmi_resume(struct device *dev) > diff --git a/drivers/memory/pl172.c b/drivers/memory/pl172.c > index 575fadbffa30..9eb8cc7de494 100644 > --- a/drivers/memory/pl172.c > +++ b/drivers/memory/pl172.c > @@ -273,14 +273,12 @@ static int pl172_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int pl172_remove(struct amba_device *adev) > +static void pl172_remove(struct amba_device *adev) > { > struct pl172_data *pl172 = amba_get_drvdata(adev); > > clk_disable_unprepare(pl172->clk); > amba_release_regions(adev); > - > - return 0; > } > > static const struct amba_id pl172_ids[] = { > diff --git a/drivers/memory/pl353-smc.c b/drivers/memory/pl353-smc.c > index 73bd3023202f..3b5b1045edd9 100644 > --- a/drivers/memory/pl353-smc.c > +++ b/drivers/memory/pl353-smc.c > @@ -426,14 +426,12 @@ static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id) > return err; > } > > -static int pl353_smc_remove(struct amba_device *adev) > +static void pl353_smc_remove(struct amba_device *adev) > { > struct pl353_smc_data *pl353_smc = amba_get_drvdata(adev); > > clk_disable_unprepare(pl353_smc->memclk); > clk_disable_unprepare(pl353_smc->aclk); > - > - return 0; > } > > static const struct amba_id pl353_ids[] = { > diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c > index b5a41a7ce165..32f52d070bbd 100644 > --- a/drivers/mmc/host/mmci.c > +++ b/drivers/mmc/host/mmci.c > @@ -2195,7 +2195,7 @@ static int mmci_probe(struct amba_device *dev, > return ret; > } > > -static int mmci_remove(struct amba_device *dev) > +static void mmci_remove(struct amba_device *dev) > { > struct mmc_host *mmc = amba_get_drvdata(dev); > > @@ -2223,8 +2223,6 @@ static int mmci_remove(struct amba_device *dev) > clk_disable_unprepare(host->clk); > mmc_free_host(mmc); > } > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c > index 5a880516f3e8..39038c0754ee 100644 > --- a/drivers/rtc/rtc-pl030.c > +++ b/drivers/rtc/rtc-pl030.c > @@ -137,7 +137,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int pl030_remove(struct amba_device *dev) > +static void pl030_remove(struct amba_device *dev) > { > struct pl030_rtc *rtc = amba_get_drvdata(dev); > > @@ -146,8 +146,6 @@ static int pl030_remove(struct amba_device *dev) > free_irq(dev->irq[0], rtc); > iounmap(rtc->base); > amba_release_regions(dev); > - > - return 0; > } > > static struct amba_id pl030_ids[] = { > diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c > index 224bbf096262..620c8dc33647 100644 > --- a/drivers/rtc/rtc-pl031.c > +++ b/drivers/rtc/rtc-pl031.c > @@ -280,7 +280,7 @@ static int pl031_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) > return 0; > } > > -static int pl031_remove(struct amba_device *adev) > +static void pl031_remove(struct amba_device *adev) > { > struct pl031_local *ldata = dev_get_drvdata(&adev->dev); > > @@ -289,8 +289,6 @@ static int pl031_remove(struct amba_device *adev) > if (adev->irq[0]) > free_irq(adev->irq[0], ldata); > amba_release_regions(adev); > - > - return 0; > } > > static int pl031_probe(struct amba_device *adev, const struct amba_id *id) > diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c > index d1776fea287e..fd74ddfbb686 100644 > --- a/drivers/spi/spi-pl022.c > +++ b/drivers/spi/spi-pl022.c > @@ -2314,13 +2314,13 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id) > return status; > } > > -static int > +static void > pl022_remove(struct amba_device *adev) > { > struct pl022 *pl022 = amba_get_drvdata(adev); > > if (!pl022) > - return 0; > + return; > > /* > * undo pm_runtime_put() in probe. I assume that we're not > @@ -2335,7 +2335,6 @@ pl022_remove(struct amba_device *adev) > clk_disable_unprepare(pl022->clk); > amba_release_regions(adev); > tasklet_disable(&pl022->pump_transfers); > - return 0; > } > > #ifdef CONFIG_PM_SLEEP > diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c > index 3284f34e9dfe..3f96edfe569c 100644 > --- a/drivers/tty/serial/amba-pl010.c > +++ b/drivers/tty/serial/amba-pl010.c > @@ -754,7 +754,7 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int pl010_remove(struct amba_device *dev) > +static void pl010_remove(struct amba_device *dev) > { > struct uart_amba_port *uap = amba_get_drvdata(dev); > int i; > @@ -770,8 +770,6 @@ static int pl010_remove(struct amba_device *dev) > > if (!busy) > uart_unregister_driver(&amba_reg); > - > - return 0; > } > > #ifdef CONFIG_PM_SLEEP > diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c > index c255476cce28..4ead0c9048a8 100644 > --- a/drivers/tty/serial/amba-pl011.c > +++ b/drivers/tty/serial/amba-pl011.c > @@ -2679,13 +2679,12 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) > return pl011_register_port(uap); > } > > -static int pl011_remove(struct amba_device *dev) > +static void pl011_remove(struct amba_device *dev) > { > struct uart_amba_port *uap = amba_get_drvdata(dev); > > uart_remove_one_port(&amba_reg, &uap->port); > pl011_unregister_port(uap); > - return 0; > } > > #ifdef CONFIG_PM_SLEEP > diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c > index 7b3ebf1558e1..3626c2150101 100644 > --- a/drivers/vfio/platform/vfio_amba.c > +++ b/drivers/vfio/platform/vfio_amba.c > @@ -71,14 +71,13 @@ static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int vfio_amba_remove(struct amba_device *adev) > +static void vfio_amba_remove(struct amba_device *adev) > { > struct vfio_platform_device *vdev = > vfio_platform_remove_common(&adev->dev); > > kfree(vdev->name); > kfree(vdev); > - return 0; > } > > static const struct amba_id pl330_ids[] = { > diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c > index b7682de412d8..33595cc4778e 100644 > --- a/drivers/video/fbdev/amba-clcd.c > +++ b/drivers/video/fbdev/amba-clcd.c > @@ -925,7 +925,7 @@ static int clcdfb_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int clcdfb_remove(struct amba_device *dev) > +static void clcdfb_remove(struct amba_device *dev) > { > struct clcd_fb *fb = amba_get_drvdata(dev); > > @@ -942,8 +942,6 @@ static int clcdfb_remove(struct amba_device *dev) > kfree(fb); > > amba_release_regions(dev); > - > - return 0; > } > > static const struct amba_id clcdfb_id_table[] = { > diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c > index 958dc32a708f..58a00e1ab23b 100644 > --- a/drivers/watchdog/sp805_wdt.c > +++ b/drivers/watchdog/sp805_wdt.c > @@ -305,14 +305,12 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int sp805_wdt_remove(struct amba_device *adev) > +static void sp805_wdt_remove(struct amba_device *adev) > { > struct sp805_wdt *wdt = amba_get_drvdata(adev); > > watchdog_unregister_device(&wdt->wdd); > watchdog_set_drvdata(&wdt->wdd, NULL); > - > - return 0; > } > > static int __maybe_unused sp805_wdt_suspend(struct device *dev) > diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h > index 0bbfd647f5c6..6cc93ab5b809 100644 > --- a/include/linux/amba/bus.h > +++ b/include/linux/amba/bus.h > @@ -76,7 +76,7 @@ struct amba_device { > struct amba_driver { > struct device_driver drv; > int (*probe)(struct amba_device *, const struct amba_id *); > - int (*remove)(struct amba_device *); > + void (*remove)(struct amba_device *); > void (*shutdown)(struct amba_device *); > const struct amba_id *id_table; > }; > diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c > index a0996c47e58f..b326a5f5f0d5 100644 > --- a/sound/arm/aaci.c > +++ b/sound/arm/aaci.c > @@ -1055,7 +1055,7 @@ static int aaci_probe(struct amba_device *dev, > return ret; > } > > -static int aaci_remove(struct amba_device *dev) > +static void aaci_remove(struct amba_device *dev) > { > struct snd_card *card = amba_get_drvdata(dev); > > @@ -1066,8 +1066,6 @@ static int aaci_remove(struct amba_device *dev) > snd_card_free(card); > amba_release_regions(dev); > } > - > - return 0; > } > > static struct amba_id aaci_ids[] = { > -- > 2.29.2 >
On Tue, 26 Jan 2021 17:58:34 +0100, Uwe Kleine-König wrote: > > All amba drivers return 0 in their remove callback. Together with the > driver core ignoring the return value anyhow, it doesn't make sense to > return a value here. > > Change the remove prototype to return void, which makes it explicit that > returning an error value doesn't work as expected. This simplifies changing > the core remove callback to return void, too. > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > Acked-by: Mark Brown <broonie@kernel.org> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > --- > drivers/amba/bus.c | 5 ++--- > drivers/char/hw_random/nomadik-rng.c | 3 +-- > drivers/dma/pl330.c | 3 +-- > drivers/gpu/drm/pl111/pl111_drv.c | 4 +--- > drivers/hwtracing/coresight/coresight-catu.c | 3 +-- > drivers/hwtracing/coresight/coresight-cpu-debug.c | 4 +--- > drivers/hwtracing/coresight/coresight-cti-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-etb10.c | 4 +--- > drivers/hwtracing/coresight/coresight-etm3x-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-etm4x-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-funnel.c | 4 ++-- > drivers/hwtracing/coresight/coresight-replicator.c | 4 ++-- > drivers/hwtracing/coresight/coresight-stm.c | 4 +--- > drivers/hwtracing/coresight/coresight-tmc-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-tpiu.c | 4 +--- > drivers/i2c/busses/i2c-nomadik.c | 4 +--- > drivers/input/serio/ambakmi.c | 3 +-- > drivers/memory/pl172.c | 4 +--- > drivers/memory/pl353-smc.c | 4 +--- > drivers/mmc/host/mmci.c | 4 +--- > drivers/rtc/rtc-pl030.c | 4 +--- > drivers/rtc/rtc-pl031.c | 4 +--- > drivers/spi/spi-pl022.c | 5 ++--- > drivers/tty/serial/amba-pl010.c | 4 +--- > drivers/tty/serial/amba-pl011.c | 3 +-- > drivers/vfio/platform/vfio_amba.c | 3 +-- > drivers/video/fbdev/amba-clcd.c | 4 +--- > drivers/watchdog/sp805_wdt.c | 4 +--- > include/linux/amba/bus.h | 2 +- > sound/arm/aaci.c | 4 +--- For the sound/*: Acked-by: Takashi Iwai <tiwai@suse.de> thanks, Takashi
On 1/26/21 6:58 PM, Uwe Kleine-König wrote: > All amba drivers return 0 in their remove callback. Together with the > driver core ignoring the return value anyhow, it doesn't make sense to > return a value here. > > Change the remove prototype to return void, which makes it explicit that > returning an error value doesn't work as expected. This simplifies changing > the core remove callback to return void, too. > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > Acked-by: Mark Brown <broonie@kernel.org> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> For drivers/memory/pl172.c: Acked-by: Vladimir Zapolskiy <vz@mleia.com> -- Best wishes, Vladimir
On Tue, Jan 26, 2021 at 05:58:34PM +0100, Uwe Kleine-König wrote: > All amba drivers return 0 in their remove callback. Together with the > driver core ignoring the return value anyhow, it doesn't make sense to > return a value here. > > Change the remove prototype to return void, which makes it explicit that > returning an error value doesn't work as expected. This simplifies changing > the core remove callback to return void, too. > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > Acked-by: Mark Brown <broonie@kernel.org> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hi Uwe, On 1/26/21 5:58 PM, Uwe Kleine-König wrote: > All amba drivers return 0 in their remove callback. Together with the > driver core ignoring the return value anyhow, it doesn't make sense to > return a value here. > > Change the remove prototype to return void, which makes it explicit that > returning an error value doesn't work as expected. This simplifies changing > the core remove callback to return void, too. > > Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> > Reviewed-by: Arnd Bergmann <arnd@arndb.de> > Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory > Acked-by: Mark Brown <broonie@kernel.org> > Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> > --- > drivers/amba/bus.c | 5 ++--- > drivers/char/hw_random/nomadik-rng.c | 3 +-- > drivers/dma/pl330.c | 3 +-- > drivers/gpu/drm/pl111/pl111_drv.c | 4 +--- > drivers/hwtracing/coresight/coresight-catu.c | 3 +-- > drivers/hwtracing/coresight/coresight-cpu-debug.c | 4 +--- > drivers/hwtracing/coresight/coresight-cti-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-etb10.c | 4 +--- > drivers/hwtracing/coresight/coresight-etm3x-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-etm4x-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-funnel.c | 4 ++-- > drivers/hwtracing/coresight/coresight-replicator.c | 4 ++-- > drivers/hwtracing/coresight/coresight-stm.c | 4 +--- > drivers/hwtracing/coresight/coresight-tmc-core.c | 4 +--- > drivers/hwtracing/coresight/coresight-tpiu.c | 4 +--- > drivers/i2c/busses/i2c-nomadik.c | 4 +--- > drivers/input/serio/ambakmi.c | 3 +-- > drivers/memory/pl172.c | 4 +--- > drivers/memory/pl353-smc.c | 4 +--- > drivers/mmc/host/mmci.c | 4 +--- > drivers/rtc/rtc-pl030.c | 4 +--- > drivers/rtc/rtc-pl031.c | 4 +--- > drivers/spi/spi-pl022.c | 5 ++--- > drivers/tty/serial/amba-pl010.c | 4 +--- > drivers/tty/serial/amba-pl011.c | 3 +-- > drivers/vfio/platform/vfio_amba.c | 3 +-- > drivers/video/fbdev/amba-clcd.c | 4 +--- > drivers/watchdog/sp805_wdt.c | 4 +--- > include/linux/amba/bus.h | 2 +- > sound/arm/aaci.c | 4 +--- > 30 files changed, 34 insertions(+), 80 deletions(-) > > diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c > index 8c4a42df47c6..48b5d4b4e889 100644 > --- a/drivers/amba/bus.c > +++ b/drivers/amba/bus.c > @@ -300,11 +300,10 @@ static int amba_remove(struct device *dev) > { > struct amba_device *pcdev = to_amba_device(dev); > struct amba_driver *drv = to_amba_driver(dev->driver); > - int ret = 0; > > pm_runtime_get_sync(dev); > if (drv->remove) > - ret = drv->remove(pcdev); > + drv->remove(pcdev); > pm_runtime_put_noidle(dev); > > /* Undo the runtime PM settings in amba_probe() */ > @@ -315,7 +314,7 @@ static int amba_remove(struct device *dev) > amba_put_disable_pclk(pcdev); > dev_pm_domain_detach(dev, true); > > - return ret; > + return 0; > } > > static void amba_shutdown(struct device *dev) > diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c > index b0ded41eb865..67947a19aa22 100644 > --- a/drivers/char/hw_random/nomadik-rng.c > +++ b/drivers/char/hw_random/nomadik-rng.c > @@ -69,11 +69,10 @@ static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int nmk_rng_remove(struct amba_device *dev) > +static void nmk_rng_remove(struct amba_device *dev) > { > amba_release_regions(dev); > clk_disable(rng_clk); > - return 0; > } > > static const struct amba_id nmk_rng_ids[] = { > diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c > index bc0f66af0f11..fd8d2bc3be9f 100644 > --- a/drivers/dma/pl330.c > +++ b/drivers/dma/pl330.c > @@ -3195,7 +3195,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int pl330_remove(struct amba_device *adev) > +static void pl330_remove(struct amba_device *adev) > { > struct pl330_dmac *pl330 = amba_get_drvdata(adev); > struct dma_pl330_chan *pch, *_p; > @@ -3235,7 +3235,6 @@ static int pl330_remove(struct amba_device *adev) > > if (pl330->rstc) > reset_control_assert(pl330->rstc); > - return 0; > } > > static const struct amba_id pl330_ids[] = { > diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c > index 40e6708fbbe2..1fb5eacefd2d 100644 > --- a/drivers/gpu/drm/pl111/pl111_drv.c > +++ b/drivers/gpu/drm/pl111/pl111_drv.c > @@ -320,7 +320,7 @@ static int pl111_amba_probe(struct amba_device *amba_dev, > return ret; > } > > -static int pl111_amba_remove(struct amba_device *amba_dev) > +static void pl111_amba_remove(struct amba_device *amba_dev) > { > struct device *dev = &amba_dev->dev; > struct drm_device *drm = amba_get_drvdata(amba_dev); > @@ -331,8 +331,6 @@ static int pl111_amba_remove(struct amba_device *amba_dev) > drm_panel_bridge_remove(priv->bridge); > drm_dev_put(drm); > of_reserved_mem_device_release(dev); > - > - return 0; > } > > /* > diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c > index a61313f320bd..8e19e8cdcce5 100644 > --- a/drivers/hwtracing/coresight/coresight-catu.c > +++ b/drivers/hwtracing/coresight/coresight-catu.c > @@ -567,12 +567,11 @@ static int catu_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int catu_remove(struct amba_device *adev) > +static void catu_remove(struct amba_device *adev) > { > struct catu_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > coresight_unregister(drvdata->csdev); > - return 0; > } > > static struct amba_id catu_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c > index e1d232411d8d..2dcf13de751f 100644 > --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c > +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c > @@ -627,7 +627,7 @@ static int debug_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int debug_remove(struct amba_device *adev) > +static void debug_remove(struct amba_device *adev) > { > struct device *dev = &adev->dev; > struct debug_drvdata *drvdata = amba_get_drvdata(adev); > @@ -642,8 +642,6 @@ static int debug_remove(struct amba_device *adev) > > if (!--debug_count) > debug_func_exit(); > - > - return 0; > } > > static const struct amba_cs_uci_id uci_id_debug[] = { > diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c > index 61dbc1afd8da..30e48809ba00 100644 > --- a/drivers/hwtracing/coresight/coresight-cti-core.c > +++ b/drivers/hwtracing/coresight/coresight-cti-core.c > @@ -836,7 +836,7 @@ static void cti_device_release(struct device *dev) > if (drvdata->csdev_release) > drvdata->csdev_release(dev); > } > -static int cti_remove(struct amba_device *adev) > +static void cti_remove(struct amba_device *adev) > { > struct cti_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -845,8 +845,6 @@ static int cti_remove(struct amba_device *adev) > mutex_unlock(&ect_mutex); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > static int cti_probe(struct amba_device *adev, const struct amba_id *id) > diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c > index 0cf6f0b947b6..51c801c05e5c 100644 > --- a/drivers/hwtracing/coresight/coresight-etb10.c > +++ b/drivers/hwtracing/coresight/coresight-etb10.c > @@ -803,7 +803,7 @@ static int etb_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int etb_remove(struct amba_device *adev) > +static void etb_remove(struct amba_device *adev) > { > struct etb_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -814,8 +814,6 @@ static int etb_remove(struct amba_device *adev) > */ > misc_deregister(&drvdata->miscdev); > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c > index 5bf5a5a4ce6d..683a69e88efd 100644 > --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c > +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c > @@ -909,7 +909,7 @@ static void clear_etmdrvdata(void *info) > etmdrvdata[cpu] = NULL; > } > > -static int etm_remove(struct amba_device *adev) > +static void etm_remove(struct amba_device *adev) > { > struct etm_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -932,8 +932,6 @@ static int etm_remove(struct amba_device *adev) > cpus_read_unlock(); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c > index b20b6ff17cf6..82787cba537d 100644 > --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c > +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c > @@ -1680,7 +1680,7 @@ static void clear_etmdrvdata(void *info) > etmdrvdata[cpu] = NULL; > } > > -static int etm4_remove(struct amba_device *adev) > +static void etm4_remove(struct amba_device *adev) > { > struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -1703,8 +1703,6 @@ static int etm4_remove(struct amba_device *adev) > cpus_read_unlock(); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > static const struct amba_id etm4_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c > index 071c723227db..01f8f9285168 100644 > --- a/drivers/hwtracing/coresight/coresight-funnel.c > +++ b/drivers/hwtracing/coresight/coresight-funnel.c > @@ -370,9 +370,9 @@ static int dynamic_funnel_probe(struct amba_device *adev, > return funnel_probe(&adev->dev, &adev->res); > } > > -static int dynamic_funnel_remove(struct amba_device *adev) > +static void dynamic_funnel_remove(struct amba_device *adev) > { > - return funnel_remove(&adev->dev); > + funnel_remove(&adev->dev); > } > > static const struct amba_id dynamic_funnel_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c > index 7e2a2b7f503f..34fc2f6f3ea9 100644 > --- a/drivers/hwtracing/coresight/coresight-replicator.c > +++ b/drivers/hwtracing/coresight/coresight-replicator.c > @@ -388,9 +388,9 @@ static int dynamic_replicator_probe(struct amba_device *adev, > return replicator_probe(&adev->dev, &adev->res); > } > > -static int dynamic_replicator_remove(struct amba_device *adev) > +static void dynamic_replicator_remove(struct amba_device *adev) > { > - return replicator_remove(&adev->dev); > + replicator_remove(&adev->dev); > } > > static const struct amba_id dynamic_replicator_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c > index 99791773f682..423df0d30d9c 100644 > --- a/drivers/hwtracing/coresight/coresight-stm.c > +++ b/drivers/hwtracing/coresight/coresight-stm.c > @@ -951,15 +951,13 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int stm_remove(struct amba_device *adev) > +static void stm_remove(struct amba_device *adev) > { > struct stm_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > coresight_unregister(drvdata->csdev); > > stm_unregister_device(&drvdata->stm); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c > index 8169dff5a9f6..e29b3914fc0f 100644 > --- a/drivers/hwtracing/coresight/coresight-tmc-core.c > +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c > @@ -559,7 +559,7 @@ static void tmc_shutdown(struct amba_device *adev) > spin_unlock_irqrestore(&drvdata->spinlock, flags); > } > > -static int tmc_remove(struct amba_device *adev) > +static void tmc_remove(struct amba_device *adev) > { > struct tmc_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > @@ -570,8 +570,6 @@ static int tmc_remove(struct amba_device *adev) > */ > misc_deregister(&drvdata->miscdev); > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > static const struct amba_id tmc_ids[] = { > diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c > index d5dfee9ee556..f77c4b0ea4aa 100644 > --- a/drivers/hwtracing/coresight/coresight-tpiu.c > +++ b/drivers/hwtracing/coresight/coresight-tpiu.c > @@ -173,13 +173,11 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) > return PTR_ERR(drvdata->csdev); > } > > -static int tpiu_remove(struct amba_device *adev) > +static void tpiu_remove(struct amba_device *adev) > { > struct tpiu_drvdata *drvdata = dev_get_drvdata(&adev->dev); > > coresight_unregister(drvdata->csdev); > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c > index d4b1b0865f67..a3363b20f168 100644 > --- a/drivers/i2c/busses/i2c-nomadik.c > +++ b/drivers/i2c/busses/i2c-nomadik.c > @@ -1055,7 +1055,7 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int nmk_i2c_remove(struct amba_device *adev) > +static void nmk_i2c_remove(struct amba_device *adev) > { > struct resource *res = &adev->res; > struct nmk_i2c_dev *dev = amba_get_drvdata(adev); > @@ -1068,8 +1068,6 @@ static int nmk_i2c_remove(struct amba_device *adev) > i2c_clr_bit(dev->virtbase + I2C_CR, I2C_CR_PE); > clk_disable_unprepare(dev->clk); > release_mem_region(res->start, resource_size(res)); > - > - return 0; > } > > static struct i2c_vendor_data vendor_stn8815 = { > diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c > index ecdeca147ed7..4408245b61d2 100644 > --- a/drivers/input/serio/ambakmi.c > +++ b/drivers/input/serio/ambakmi.c > @@ -159,7 +159,7 @@ static int amba_kmi_probe(struct amba_device *dev, > return ret; > } > > -static int amba_kmi_remove(struct amba_device *dev) > +static void amba_kmi_remove(struct amba_device *dev) > { > struct amba_kmi_port *kmi = amba_get_drvdata(dev); > > @@ -168,7 +168,6 @@ static int amba_kmi_remove(struct amba_device *dev) > iounmap(kmi->base); > kfree(kmi); > amba_release_regions(dev); > - return 0; > } > > static int __maybe_unused amba_kmi_resume(struct device *dev) > diff --git a/drivers/memory/pl172.c b/drivers/memory/pl172.c > index 575fadbffa30..9eb8cc7de494 100644 > --- a/drivers/memory/pl172.c > +++ b/drivers/memory/pl172.c > @@ -273,14 +273,12 @@ static int pl172_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int pl172_remove(struct amba_device *adev) > +static void pl172_remove(struct amba_device *adev) > { > struct pl172_data *pl172 = amba_get_drvdata(adev); > > clk_disable_unprepare(pl172->clk); > amba_release_regions(adev); > - > - return 0; > } > > static const struct amba_id pl172_ids[] = { > diff --git a/drivers/memory/pl353-smc.c b/drivers/memory/pl353-smc.c > index 73bd3023202f..3b5b1045edd9 100644 > --- a/drivers/memory/pl353-smc.c > +++ b/drivers/memory/pl353-smc.c > @@ -426,14 +426,12 @@ static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id) > return err; > } > > -static int pl353_smc_remove(struct amba_device *adev) > +static void pl353_smc_remove(struct amba_device *adev) > { > struct pl353_smc_data *pl353_smc = amba_get_drvdata(adev); > > clk_disable_unprepare(pl353_smc->memclk); > clk_disable_unprepare(pl353_smc->aclk); > - > - return 0; > } > > static const struct amba_id pl353_ids[] = { > diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c > index b5a41a7ce165..32f52d070bbd 100644 > --- a/drivers/mmc/host/mmci.c > +++ b/drivers/mmc/host/mmci.c > @@ -2195,7 +2195,7 @@ static int mmci_probe(struct amba_device *dev, > return ret; > } > > -static int mmci_remove(struct amba_device *dev) > +static void mmci_remove(struct amba_device *dev) > { > struct mmc_host *mmc = amba_get_drvdata(dev); > > @@ -2223,8 +2223,6 @@ static int mmci_remove(struct amba_device *dev) > clk_disable_unprepare(host->clk); > mmc_free_host(mmc); > } > - > - return 0; > } > > #ifdef CONFIG_PM > diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c > index 5a880516f3e8..39038c0754ee 100644 > --- a/drivers/rtc/rtc-pl030.c > +++ b/drivers/rtc/rtc-pl030.c > @@ -137,7 +137,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int pl030_remove(struct amba_device *dev) > +static void pl030_remove(struct amba_device *dev) > { > struct pl030_rtc *rtc = amba_get_drvdata(dev); > > @@ -146,8 +146,6 @@ static int pl030_remove(struct amba_device *dev) > free_irq(dev->irq[0], rtc); > iounmap(rtc->base); > amba_release_regions(dev); > - > - return 0; > } > > static struct amba_id pl030_ids[] = { > diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c > index 224bbf096262..620c8dc33647 100644 > --- a/drivers/rtc/rtc-pl031.c > +++ b/drivers/rtc/rtc-pl031.c > @@ -280,7 +280,7 @@ static int pl031_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) > return 0; > } > > -static int pl031_remove(struct amba_device *adev) > +static void pl031_remove(struct amba_device *adev) > { > struct pl031_local *ldata = dev_get_drvdata(&adev->dev); > > @@ -289,8 +289,6 @@ static int pl031_remove(struct amba_device *adev) > if (adev->irq[0]) > free_irq(adev->irq[0], ldata); > amba_release_regions(adev); > - > - return 0; > } > > static int pl031_probe(struct amba_device *adev, const struct amba_id *id) > diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c > index d1776fea287e..fd74ddfbb686 100644 > --- a/drivers/spi/spi-pl022.c > +++ b/drivers/spi/spi-pl022.c > @@ -2314,13 +2314,13 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id) > return status; > } > > -static int > +static void > pl022_remove(struct amba_device *adev) > { > struct pl022 *pl022 = amba_get_drvdata(adev); > > if (!pl022) > - return 0; > + return; > > /* > * undo pm_runtime_put() in probe. I assume that we're not > @@ -2335,7 +2335,6 @@ pl022_remove(struct amba_device *adev) > clk_disable_unprepare(pl022->clk); > amba_release_regions(adev); > tasklet_disable(&pl022->pump_transfers); > - return 0; > } > > #ifdef CONFIG_PM_SLEEP > diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c > index 3284f34e9dfe..3f96edfe569c 100644 > --- a/drivers/tty/serial/amba-pl010.c > +++ b/drivers/tty/serial/amba-pl010.c > @@ -754,7 +754,7 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int pl010_remove(struct amba_device *dev) > +static void pl010_remove(struct amba_device *dev) > { > struct uart_amba_port *uap = amba_get_drvdata(dev); > int i; > @@ -770,8 +770,6 @@ static int pl010_remove(struct amba_device *dev) > > if (!busy) > uart_unregister_driver(&amba_reg); > - > - return 0; > } > > #ifdef CONFIG_PM_SLEEP > diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c > index c255476cce28..4ead0c9048a8 100644 > --- a/drivers/tty/serial/amba-pl011.c > +++ b/drivers/tty/serial/amba-pl011.c > @@ -2679,13 +2679,12 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) > return pl011_register_port(uap); > } > > -static int pl011_remove(struct amba_device *dev) > +static void pl011_remove(struct amba_device *dev) > { > struct uart_amba_port *uap = amba_get_drvdata(dev); > > uart_remove_one_port(&amba_reg, &uap->port); > pl011_unregister_port(uap); > - return 0; > } > > #ifdef CONFIG_PM_SLEEP > diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c > index 7b3ebf1558e1..3626c2150101 100644 > --- a/drivers/vfio/platform/vfio_amba.c > +++ b/drivers/vfio/platform/vfio_amba.c > @@ -71,14 +71,13 @@ static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int vfio_amba_remove(struct amba_device *adev) > +static void vfio_amba_remove(struct amba_device *adev) > { > struct vfio_platform_device *vdev = > vfio_platform_remove_common(&adev->dev); > > kfree(vdev->name); > kfree(vdev); > - return 0; > } > > static const struct amba_id pl330_ids[] = { > diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c > index b7682de412d8..33595cc4778e 100644 > --- a/drivers/video/fbdev/amba-clcd.c > +++ b/drivers/video/fbdev/amba-clcd.c > @@ -925,7 +925,7 @@ static int clcdfb_probe(struct amba_device *dev, const struct amba_id *id) > return ret; > } > > -static int clcdfb_remove(struct amba_device *dev) > +static void clcdfb_remove(struct amba_device *dev) > { > struct clcd_fb *fb = amba_get_drvdata(dev); > > @@ -942,8 +942,6 @@ static int clcdfb_remove(struct amba_device *dev) > kfree(fb); > > amba_release_regions(dev); > - > - return 0; > } > > static const struct amba_id clcdfb_id_table[] = { > diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c > index 958dc32a708f..58a00e1ab23b 100644 > --- a/drivers/watchdog/sp805_wdt.c > +++ b/drivers/watchdog/sp805_wdt.c > @@ -305,14 +305,12 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id) > return ret; > } > > -static int sp805_wdt_remove(struct amba_device *adev) > +static void sp805_wdt_remove(struct amba_device *adev) > { > struct sp805_wdt *wdt = amba_get_drvdata(adev); > > watchdog_unregister_device(&wdt->wdd); > watchdog_set_drvdata(&wdt->wdd, NULL); > - > - return 0; > } > > static int __maybe_unused sp805_wdt_suspend(struct device *dev) > diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h > index 0bbfd647f5c6..6cc93ab5b809 100644 > --- a/include/linux/amba/bus.h > +++ b/include/linux/amba/bus.h > @@ -76,7 +76,7 @@ struct amba_device { > struct amba_driver { > struct device_driver drv; > int (*probe)(struct amba_device *, const struct amba_id *); > - int (*remove)(struct amba_device *); > + void (*remove)(struct amba_device *); > void (*shutdown)(struct amba_device *); > const struct amba_id *id_table; > }; > diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c > index a0996c47e58f..b326a5f5f0d5 100644 > --- a/sound/arm/aaci.c > +++ b/sound/arm/aaci.c > @@ -1055,7 +1055,7 @@ static int aaci_probe(struct amba_device *dev, > return ret; > } > > -static int aaci_remove(struct amba_device *dev) > +static void aaci_remove(struct amba_device *dev) > { > struct snd_card *card = amba_get_drvdata(dev); > > @@ -1066,8 +1066,6 @@ static int aaci_remove(struct amba_device *dev) > snd_card_free(card); > amba_release_regions(dev); > } > - > - return 0; > } > > static struct amba_id aaci_ids[] = { > for vfio-amba, Acked-by: Eric Auger <eric.auger@redhat.com> Thanks Eric
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index 8c4a42df47c6..48b5d4b4e889 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -300,11 +300,10 @@ static int amba_remove(struct device *dev) { struct amba_device *pcdev = to_amba_device(dev); struct amba_driver *drv = to_amba_driver(dev->driver); - int ret = 0; pm_runtime_get_sync(dev); if (drv->remove) - ret = drv->remove(pcdev); + drv->remove(pcdev); pm_runtime_put_noidle(dev); /* Undo the runtime PM settings in amba_probe() */ @@ -315,7 +314,7 @@ static int amba_remove(struct device *dev) amba_put_disable_pclk(pcdev); dev_pm_domain_detach(dev, true); - return ret; + return 0; } static void amba_shutdown(struct device *dev) diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c index b0ded41eb865..67947a19aa22 100644 --- a/drivers/char/hw_random/nomadik-rng.c +++ b/drivers/char/hw_random/nomadik-rng.c @@ -69,11 +69,10 @@ static int nmk_rng_probe(struct amba_device *dev, const struct amba_id *id) return ret; } -static int nmk_rng_remove(struct amba_device *dev) +static void nmk_rng_remove(struct amba_device *dev) { amba_release_regions(dev); clk_disable(rng_clk); - return 0; } static const struct amba_id nmk_rng_ids[] = { diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index bc0f66af0f11..fd8d2bc3be9f 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -3195,7 +3195,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int pl330_remove(struct amba_device *adev) +static void pl330_remove(struct amba_device *adev) { struct pl330_dmac *pl330 = amba_get_drvdata(adev); struct dma_pl330_chan *pch, *_p; @@ -3235,7 +3235,6 @@ static int pl330_remove(struct amba_device *adev) if (pl330->rstc) reset_control_assert(pl330->rstc); - return 0; } static const struct amba_id pl330_ids[] = { diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c index 40e6708fbbe2..1fb5eacefd2d 100644 --- a/drivers/gpu/drm/pl111/pl111_drv.c +++ b/drivers/gpu/drm/pl111/pl111_drv.c @@ -320,7 +320,7 @@ static int pl111_amba_probe(struct amba_device *amba_dev, return ret; } -static int pl111_amba_remove(struct amba_device *amba_dev) +static void pl111_amba_remove(struct amba_device *amba_dev) { struct device *dev = &amba_dev->dev; struct drm_device *drm = amba_get_drvdata(amba_dev); @@ -331,8 +331,6 @@ static int pl111_amba_remove(struct amba_device *amba_dev) drm_panel_bridge_remove(priv->bridge); drm_dev_put(drm); of_reserved_mem_device_release(dev); - - return 0; } /* diff --git a/drivers/hwtracing/coresight/coresight-catu.c b/drivers/hwtracing/coresight/coresight-catu.c index a61313f320bd..8e19e8cdcce5 100644 --- a/drivers/hwtracing/coresight/coresight-catu.c +++ b/drivers/hwtracing/coresight/coresight-catu.c @@ -567,12 +567,11 @@ static int catu_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int catu_remove(struct amba_device *adev) +static void catu_remove(struct amba_device *adev) { struct catu_drvdata *drvdata = dev_get_drvdata(&adev->dev); coresight_unregister(drvdata->csdev); - return 0; } static struct amba_id catu_ids[] = { diff --git a/drivers/hwtracing/coresight/coresight-cpu-debug.c b/drivers/hwtracing/coresight/coresight-cpu-debug.c index e1d232411d8d..2dcf13de751f 100644 --- a/drivers/hwtracing/coresight/coresight-cpu-debug.c +++ b/drivers/hwtracing/coresight/coresight-cpu-debug.c @@ -627,7 +627,7 @@ static int debug_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int debug_remove(struct amba_device *adev) +static void debug_remove(struct amba_device *adev) { struct device *dev = &adev->dev; struct debug_drvdata *drvdata = amba_get_drvdata(adev); @@ -642,8 +642,6 @@ static int debug_remove(struct amba_device *adev) if (!--debug_count) debug_func_exit(); - - return 0; } static const struct amba_cs_uci_id uci_id_debug[] = { diff --git a/drivers/hwtracing/coresight/coresight-cti-core.c b/drivers/hwtracing/coresight/coresight-cti-core.c index 61dbc1afd8da..30e48809ba00 100644 --- a/drivers/hwtracing/coresight/coresight-cti-core.c +++ b/drivers/hwtracing/coresight/coresight-cti-core.c @@ -836,7 +836,7 @@ static void cti_device_release(struct device *dev) if (drvdata->csdev_release) drvdata->csdev_release(dev); } -static int cti_remove(struct amba_device *adev) +static void cti_remove(struct amba_device *adev) { struct cti_drvdata *drvdata = dev_get_drvdata(&adev->dev); @@ -845,8 +845,6 @@ static int cti_remove(struct amba_device *adev) mutex_unlock(&ect_mutex); coresight_unregister(drvdata->csdev); - - return 0; } static int cti_probe(struct amba_device *adev, const struct amba_id *id) diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c index 0cf6f0b947b6..51c801c05e5c 100644 --- a/drivers/hwtracing/coresight/coresight-etb10.c +++ b/drivers/hwtracing/coresight/coresight-etb10.c @@ -803,7 +803,7 @@ static int etb_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int etb_remove(struct amba_device *adev) +static void etb_remove(struct amba_device *adev) { struct etb_drvdata *drvdata = dev_get_drvdata(&adev->dev); @@ -814,8 +814,6 @@ static int etb_remove(struct amba_device *adev) */ misc_deregister(&drvdata->miscdev); coresight_unregister(drvdata->csdev); - - return 0; } #ifdef CONFIG_PM diff --git a/drivers/hwtracing/coresight/coresight-etm3x-core.c b/drivers/hwtracing/coresight/coresight-etm3x-core.c index 5bf5a5a4ce6d..683a69e88efd 100644 --- a/drivers/hwtracing/coresight/coresight-etm3x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm3x-core.c @@ -909,7 +909,7 @@ static void clear_etmdrvdata(void *info) etmdrvdata[cpu] = NULL; } -static int etm_remove(struct amba_device *adev) +static void etm_remove(struct amba_device *adev) { struct etm_drvdata *drvdata = dev_get_drvdata(&adev->dev); @@ -932,8 +932,6 @@ static int etm_remove(struct amba_device *adev) cpus_read_unlock(); coresight_unregister(drvdata->csdev); - - return 0; } #ifdef CONFIG_PM diff --git a/drivers/hwtracing/coresight/coresight-etm4x-core.c b/drivers/hwtracing/coresight/coresight-etm4x-core.c index b20b6ff17cf6..82787cba537d 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@ -1680,7 +1680,7 @@ static void clear_etmdrvdata(void *info) etmdrvdata[cpu] = NULL; } -static int etm4_remove(struct amba_device *adev) +static void etm4_remove(struct amba_device *adev) { struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev); @@ -1703,8 +1703,6 @@ static int etm4_remove(struct amba_device *adev) cpus_read_unlock(); coresight_unregister(drvdata->csdev); - - return 0; } static const struct amba_id etm4_ids[] = { diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c index 071c723227db..01f8f9285168 100644 --- a/drivers/hwtracing/coresight/coresight-funnel.c +++ b/drivers/hwtracing/coresight/coresight-funnel.c @@ -370,9 +370,9 @@ static int dynamic_funnel_probe(struct amba_device *adev, return funnel_probe(&adev->dev, &adev->res); } -static int dynamic_funnel_remove(struct amba_device *adev) +static void dynamic_funnel_remove(struct amba_device *adev) { - return funnel_remove(&adev->dev); + funnel_remove(&adev->dev); } static const struct amba_id dynamic_funnel_ids[] = { diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c index 7e2a2b7f503f..34fc2f6f3ea9 100644 --- a/drivers/hwtracing/coresight/coresight-replicator.c +++ b/drivers/hwtracing/coresight/coresight-replicator.c @@ -388,9 +388,9 @@ static int dynamic_replicator_probe(struct amba_device *adev, return replicator_probe(&adev->dev, &adev->res); } -static int dynamic_replicator_remove(struct amba_device *adev) +static void dynamic_replicator_remove(struct amba_device *adev) { - return replicator_remove(&adev->dev); + replicator_remove(&adev->dev); } static const struct amba_id dynamic_replicator_ids[] = { diff --git a/drivers/hwtracing/coresight/coresight-stm.c b/drivers/hwtracing/coresight/coresight-stm.c index 99791773f682..423df0d30d9c 100644 --- a/drivers/hwtracing/coresight/coresight-stm.c +++ b/drivers/hwtracing/coresight/coresight-stm.c @@ -951,15 +951,13 @@ static int stm_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int stm_remove(struct amba_device *adev) +static void stm_remove(struct amba_device *adev) { struct stm_drvdata *drvdata = dev_get_drvdata(&adev->dev); coresight_unregister(drvdata->csdev); stm_unregister_device(&drvdata->stm); - - return 0; } #ifdef CONFIG_PM diff --git a/drivers/hwtracing/coresight/coresight-tmc-core.c b/drivers/hwtracing/coresight/coresight-tmc-core.c index 8169dff5a9f6..e29b3914fc0f 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-core.c +++ b/drivers/hwtracing/coresight/coresight-tmc-core.c @@ -559,7 +559,7 @@ static void tmc_shutdown(struct amba_device *adev) spin_unlock_irqrestore(&drvdata->spinlock, flags); } -static int tmc_remove(struct amba_device *adev) +static void tmc_remove(struct amba_device *adev) { struct tmc_drvdata *drvdata = dev_get_drvdata(&adev->dev); @@ -570,8 +570,6 @@ static int tmc_remove(struct amba_device *adev) */ misc_deregister(&drvdata->miscdev); coresight_unregister(drvdata->csdev); - - return 0; } static const struct amba_id tmc_ids[] = { diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c index d5dfee9ee556..f77c4b0ea4aa 100644 --- a/drivers/hwtracing/coresight/coresight-tpiu.c +++ b/drivers/hwtracing/coresight/coresight-tpiu.c @@ -173,13 +173,11 @@ static int tpiu_probe(struct amba_device *adev, const struct amba_id *id) return PTR_ERR(drvdata->csdev); } -static int tpiu_remove(struct amba_device *adev) +static void tpiu_remove(struct amba_device *adev) { struct tpiu_drvdata *drvdata = dev_get_drvdata(&adev->dev); coresight_unregister(drvdata->csdev); - - return 0; } #ifdef CONFIG_PM diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index d4b1b0865f67..a3363b20f168 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c @@ -1055,7 +1055,7 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int nmk_i2c_remove(struct amba_device *adev) +static void nmk_i2c_remove(struct amba_device *adev) { struct resource *res = &adev->res; struct nmk_i2c_dev *dev = amba_get_drvdata(adev); @@ -1068,8 +1068,6 @@ static int nmk_i2c_remove(struct amba_device *adev) i2c_clr_bit(dev->virtbase + I2C_CR, I2C_CR_PE); clk_disable_unprepare(dev->clk); release_mem_region(res->start, resource_size(res)); - - return 0; } static struct i2c_vendor_data vendor_stn8815 = { diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c index ecdeca147ed7..4408245b61d2 100644 --- a/drivers/input/serio/ambakmi.c +++ b/drivers/input/serio/ambakmi.c @@ -159,7 +159,7 @@ static int amba_kmi_probe(struct amba_device *dev, return ret; } -static int amba_kmi_remove(struct amba_device *dev) +static void amba_kmi_remove(struct amba_device *dev) { struct amba_kmi_port *kmi = amba_get_drvdata(dev); @@ -168,7 +168,6 @@ static int amba_kmi_remove(struct amba_device *dev) iounmap(kmi->base); kfree(kmi); amba_release_regions(dev); - return 0; } static int __maybe_unused amba_kmi_resume(struct device *dev) diff --git a/drivers/memory/pl172.c b/drivers/memory/pl172.c index 575fadbffa30..9eb8cc7de494 100644 --- a/drivers/memory/pl172.c +++ b/drivers/memory/pl172.c @@ -273,14 +273,12 @@ static int pl172_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int pl172_remove(struct amba_device *adev) +static void pl172_remove(struct amba_device *adev) { struct pl172_data *pl172 = amba_get_drvdata(adev); clk_disable_unprepare(pl172->clk); amba_release_regions(adev); - - return 0; } static const struct amba_id pl172_ids[] = { diff --git a/drivers/memory/pl353-smc.c b/drivers/memory/pl353-smc.c index 73bd3023202f..3b5b1045edd9 100644 --- a/drivers/memory/pl353-smc.c +++ b/drivers/memory/pl353-smc.c @@ -426,14 +426,12 @@ static int pl353_smc_probe(struct amba_device *adev, const struct amba_id *id) return err; } -static int pl353_smc_remove(struct amba_device *adev) +static void pl353_smc_remove(struct amba_device *adev) { struct pl353_smc_data *pl353_smc = amba_get_drvdata(adev); clk_disable_unprepare(pl353_smc->memclk); clk_disable_unprepare(pl353_smc->aclk); - - return 0; } static const struct amba_id pl353_ids[] = { diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index b5a41a7ce165..32f52d070bbd 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -2195,7 +2195,7 @@ static int mmci_probe(struct amba_device *dev, return ret; } -static int mmci_remove(struct amba_device *dev) +static void mmci_remove(struct amba_device *dev) { struct mmc_host *mmc = amba_get_drvdata(dev); @@ -2223,8 +2223,6 @@ static int mmci_remove(struct amba_device *dev) clk_disable_unprepare(host->clk); mmc_free_host(mmc); } - - return 0; } #ifdef CONFIG_PM diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c index 5a880516f3e8..39038c0754ee 100644 --- a/drivers/rtc/rtc-pl030.c +++ b/drivers/rtc/rtc-pl030.c @@ -137,7 +137,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) return ret; } -static int pl030_remove(struct amba_device *dev) +static void pl030_remove(struct amba_device *dev) { struct pl030_rtc *rtc = amba_get_drvdata(dev); @@ -146,8 +146,6 @@ static int pl030_remove(struct amba_device *dev) free_irq(dev->irq[0], rtc); iounmap(rtc->base); amba_release_regions(dev); - - return 0; } static struct amba_id pl030_ids[] = { diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 224bbf096262..620c8dc33647 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -280,7 +280,7 @@ static int pl031_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) return 0; } -static int pl031_remove(struct amba_device *adev) +static void pl031_remove(struct amba_device *adev) { struct pl031_local *ldata = dev_get_drvdata(&adev->dev); @@ -289,8 +289,6 @@ static int pl031_remove(struct amba_device *adev) if (adev->irq[0]) free_irq(adev->irq[0], ldata); amba_release_regions(adev); - - return 0; } static int pl031_probe(struct amba_device *adev, const struct amba_id *id) diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index d1776fea287e..fd74ddfbb686 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -2314,13 +2314,13 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id) return status; } -static int +static void pl022_remove(struct amba_device *adev) { struct pl022 *pl022 = amba_get_drvdata(adev); if (!pl022) - return 0; + return; /* * undo pm_runtime_put() in probe. I assume that we're not @@ -2335,7 +2335,6 @@ pl022_remove(struct amba_device *adev) clk_disable_unprepare(pl022->clk); amba_release_regions(adev); tasklet_disable(&pl022->pump_transfers); - return 0; } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c index 3284f34e9dfe..3f96edfe569c 100644 --- a/drivers/tty/serial/amba-pl010.c +++ b/drivers/tty/serial/amba-pl010.c @@ -754,7 +754,7 @@ static int pl010_probe(struct amba_device *dev, const struct amba_id *id) return ret; } -static int pl010_remove(struct amba_device *dev) +static void pl010_remove(struct amba_device *dev) { struct uart_amba_port *uap = amba_get_drvdata(dev); int i; @@ -770,8 +770,6 @@ static int pl010_remove(struct amba_device *dev) if (!busy) uart_unregister_driver(&amba_reg); - - return 0; } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index c255476cce28..4ead0c9048a8 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -2679,13 +2679,12 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) return pl011_register_port(uap); } -static int pl011_remove(struct amba_device *dev) +static void pl011_remove(struct amba_device *dev) { struct uart_amba_port *uap = amba_get_drvdata(dev); uart_remove_one_port(&amba_reg, &uap->port); pl011_unregister_port(uap); - return 0; } #ifdef CONFIG_PM_SLEEP diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c index 7b3ebf1558e1..3626c2150101 100644 --- a/drivers/vfio/platform/vfio_amba.c +++ b/drivers/vfio/platform/vfio_amba.c @@ -71,14 +71,13 @@ static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int vfio_amba_remove(struct amba_device *adev) +static void vfio_amba_remove(struct amba_device *adev) { struct vfio_platform_device *vdev = vfio_platform_remove_common(&adev->dev); kfree(vdev->name); kfree(vdev); - return 0; } static const struct amba_id pl330_ids[] = { diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c index b7682de412d8..33595cc4778e 100644 --- a/drivers/video/fbdev/amba-clcd.c +++ b/drivers/video/fbdev/amba-clcd.c @@ -925,7 +925,7 @@ static int clcdfb_probe(struct amba_device *dev, const struct amba_id *id) return ret; } -static int clcdfb_remove(struct amba_device *dev) +static void clcdfb_remove(struct amba_device *dev) { struct clcd_fb *fb = amba_get_drvdata(dev); @@ -942,8 +942,6 @@ static int clcdfb_remove(struct amba_device *dev) kfree(fb); amba_release_regions(dev); - - return 0; } static const struct amba_id clcdfb_id_table[] = { diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c index 958dc32a708f..58a00e1ab23b 100644 --- a/drivers/watchdog/sp805_wdt.c +++ b/drivers/watchdog/sp805_wdt.c @@ -305,14 +305,12 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id) return ret; } -static int sp805_wdt_remove(struct amba_device *adev) +static void sp805_wdt_remove(struct amba_device *adev) { struct sp805_wdt *wdt = amba_get_drvdata(adev); watchdog_unregister_device(&wdt->wdd); watchdog_set_drvdata(&wdt->wdd, NULL); - - return 0; } static int __maybe_unused sp805_wdt_suspend(struct device *dev) diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h index 0bbfd647f5c6..6cc93ab5b809 100644 --- a/include/linux/amba/bus.h +++ b/include/linux/amba/bus.h @@ -76,7 +76,7 @@ struct amba_device { struct amba_driver { struct device_driver drv; int (*probe)(struct amba_device *, const struct amba_id *); - int (*remove)(struct amba_device *); + void (*remove)(struct amba_device *); void (*shutdown)(struct amba_device *); const struct amba_id *id_table; }; diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c index a0996c47e58f..b326a5f5f0d5 100644 --- a/sound/arm/aaci.c +++ b/sound/arm/aaci.c @@ -1055,7 +1055,7 @@ static int aaci_probe(struct amba_device *dev, return ret; } -static int aaci_remove(struct amba_device *dev) +static void aaci_remove(struct amba_device *dev) { struct snd_card *card = amba_get_drvdata(dev); @@ -1066,8 +1066,6 @@ static int aaci_remove(struct amba_device *dev) snd_card_free(card); amba_release_regions(dev); } - - return 0; } static struct amba_id aaci_ids[] = {