| Message ID | 20241104090738.529848-1-sui.jingfeng@linux.dev |
|---|---|
| State | New |
| Headers | show |
| Series | drm/msm: Check return value of of_dma_configure() | expand |
On Mon, Nov 04, 2024 at 05:07:38PM +0800, Sui Jingfeng wrote: > Because the of_dma_configure() will returns '-EPROBE_DEFER' if the probe > procedure of the specific platform IOMMU driver is not finished yet. It > can also return other error code for various reasons. > > Stop pretending that it will always suceess, quit if it fail. > > Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev> > --- > drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) Fixes: 29ac8979cdf7 ("drm/msm/a6xx: use msm_gem for GMU memory objects") Fixes: 5a903a44a984 ("drm/msm/a6xx: Introduce GMU wrapper support") Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> > > diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c > index 37927bdd6fbe..b26dfe0a76c5 100644 > --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c > +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c > @@ -1605,7 +1605,9 @@ int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) > > gmu->dev = &pdev->dev; > > - of_dma_configure(gmu->dev, node, true); > + ret = of_dma_configure(gmu->dev, node, true); > + if (ret) > + return ret; > > pm_runtime_enable(gmu->dev); > > @@ -1670,7 +1672,9 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) > > gmu->dev = &pdev->dev; > > - of_dma_configure(gmu->dev, node, true); > + ret = of_dma_configure(gmu->dev, node, true); > + if (ret) > + return ret; > > /* Fow now, don't do anything fancy until we get our feet under us */ > gmu->idle_level = GMU_IDLE_STATE_ACTIVE; > -- > 2.34.1 >
> Because the of_dma_configure() will returns '-EPROBE_DEFER' if the probe return? … > Stop pretending that it will always suceess, quit if it fail. succeed? failed? How do you think about to add any tags (like “Fixes” and “Cc”) accordingly? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.12#n145 Regards, Markus
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 37927bdd6fbe..b26dfe0a76c5 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -1605,7 +1605,9 @@ int a6xx_gmu_wrapper_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) gmu->dev = &pdev->dev; - of_dma_configure(gmu->dev, node, true); + ret = of_dma_configure(gmu->dev, node, true); + if (ret) + return ret; pm_runtime_enable(gmu->dev); @@ -1670,7 +1672,9 @@ int a6xx_gmu_init(struct a6xx_gpu *a6xx_gpu, struct device_node *node) gmu->dev = &pdev->dev; - of_dma_configure(gmu->dev, node, true); + ret = of_dma_configure(gmu->dev, node, true); + if (ret) + return ret; /* Fow now, don't do anything fancy until we get our feet under us */ gmu->idle_level = GMU_IDLE_STATE_ACTIVE;
Because the of_dma_configure() will returns '-EPROBE_DEFER' if the probe procedure of the specific platform IOMMU driver is not finished yet. It can also return other error code for various reasons. Stop pretending that it will always suceess, quit if it fail. Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev> --- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)