| Message ID | 1609231431-10048-2-git-send-email-loic.poulain@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | mhi: pci_generic: Misc improvements | expand |
Hi Loic, +ath11k, kalle On Tue, Dec 29, 2020 at 09:43:42AM +0100, Loic Poulain wrote: > This function allows to initialize a mhi_controller structure. > Today, it only zeroing the structure. > > Use this function from mhi_alloc_controller so that any further > initialization can be factorized in initalize function. > I know that this has been discussed in earlier revisions but I'm still not convinced to have 2 APIs doing a similar job. Since we don't have any usecase currently to initialize extra fields other than the struct, we should be using the alloc_controller API. If you want to have a devres managed allocation, then the API should be extended as below: struct mhi_controller *mhi_alloc_controller(struct device *dev) { struct mhi_controller *mhi_cntrl; if (!dev) mhi_cntrl = kzalloc(sizeof(*mhi_cntrl), GFP_KERNEL); else mhi_cntrl = devm_kzalloc(dev, sizeof(*mhi_cntrl), GFP_KERNEL); return mhi_cntrl; } In this case, the ath11k MHI controller also need to be adjusted but we can use the same immutable branch way. Thanks, Mani > Signed-off-by: Loic Poulain <loic.poulain@linaro.org> > --- > drivers/bus/mhi/core/init.c | 6 ++++++ > include/linux/mhi.h | 6 ++++++ > 2 files changed, 12 insertions(+) > > diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c > index 96cde9c..a75ab8c 100644 > --- a/drivers/bus/mhi/core/init.c > +++ b/drivers/bus/mhi/core/init.c > @@ -1021,6 +1021,12 @@ void mhi_unregister_controller(struct mhi_controller *mhi_cntrl) > } > EXPORT_SYMBOL_GPL(mhi_unregister_controller); > > +void mhi_initialize_controller(struct mhi_controller *mhi_cntrl) > +{ > + memset(mhi_cntrl, 0, sizeof(*mhi_cntrl)); > +} > +EXPORT_SYMBOL_GPL(mhi_initialize_controller); > + > struct mhi_controller *mhi_alloc_controller(void) > { > struct mhi_controller *mhi_cntrl; > diff --git a/include/linux/mhi.h b/include/linux/mhi.h > index 04cf7f3..2754742 100644 > --- a/include/linux/mhi.h > +++ b/include/linux/mhi.h > @@ -537,6 +537,12 @@ struct mhi_driver { > #define to_mhi_device(dev) container_of(dev, struct mhi_device, dev) > > /** > + * mhi_initialize_controller - Initialize MHI Controller structure > + * @mhi_cntrl: MHI controller structure to initialize > + */ > +void mhi_initialize_controller(struct mhi_controller *mhi_cntrl); > + > +/** > * mhi_alloc_controller - Allocate the MHI Controller structure > * Allocate the mhi_controller structure using zero initialized memory > */ > -- > 2.7.4 >
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c index 96cde9c..a75ab8c 100644 --- a/drivers/bus/mhi/core/init.c +++ b/drivers/bus/mhi/core/init.c @@ -1021,6 +1021,12 @@ void mhi_unregister_controller(struct mhi_controller *mhi_cntrl) } EXPORT_SYMBOL_GPL(mhi_unregister_controller); +void mhi_initialize_controller(struct mhi_controller *mhi_cntrl) +{ + memset(mhi_cntrl, 0, sizeof(*mhi_cntrl)); +} +EXPORT_SYMBOL_GPL(mhi_initialize_controller); + struct mhi_controller *mhi_alloc_controller(void) { struct mhi_controller *mhi_cntrl; diff --git a/include/linux/mhi.h b/include/linux/mhi.h index 04cf7f3..2754742 100644 --- a/include/linux/mhi.h +++ b/include/linux/mhi.h @@ -537,6 +537,12 @@ struct mhi_driver { #define to_mhi_device(dev) container_of(dev, struct mhi_device, dev) /** + * mhi_initialize_controller - Initialize MHI Controller structure + * @mhi_cntrl: MHI controller structure to initialize + */ +void mhi_initialize_controller(struct mhi_controller *mhi_cntrl); + +/** * mhi_alloc_controller - Allocate the MHI Controller structure * Allocate the mhi_controller structure using zero initialized memory */
This function allows to initialize a mhi_controller structure. Today, it only zeroing the structure. Use this function from mhi_alloc_controller so that any further initialization can be factorized in initalize function. Signed-off-by: Loic Poulain <loic.poulain@linaro.org> --- drivers/bus/mhi/core/init.c | 6 ++++++ include/linux/mhi.h | 6 ++++++ 2 files changed, 12 insertions(+) -- 2.7.4