From: Jiasheng Jiang jiasheng@iscas.ac.cn
[ Upstream commit 44ab30b056149bd59dd7989a593dd25ead6007fd ]
Because of the possible failure of the dma_supported(), the dma_set_mask_and_coherent() may return error num. Therefore, it should be better to check it and return the error if fails.
Fixes: f3ba91228e8e ("drm/panfrost: Add initial panfrost driver") Signed-off-by: Jiasheng Jiang jiasheng@iscas.ac.cn [Steve: fix Fixes: line] Reviewed-by: Steven Price steven.price@arm.com Signed-off-by: Steven Price steven.price@arm.com Link: https://patchwork.freedesktop.org/patch/msgid/20220106030326.2620942-1-jiash... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/panfrost/panfrost_gpu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/panfrost/panfrost_gpu.c b/drivers/gpu/drm/panfrost/panfrost_gpu.c index bbe628b306ee..f8355de6e335 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gpu.c +++ b/drivers/gpu/drm/panfrost/panfrost_gpu.c @@ -360,8 +360,11 @@ int panfrost_gpu_init(struct panfrost_device *pfdev)
panfrost_gpu_init_features(pfdev);
- dma_set_mask_and_coherent(pfdev->dev, + err = dma_set_mask_and_coherent(pfdev->dev, DMA_BIT_MASK(FIELD_GET(0xff00, pfdev->features.mmu_features))); + if (err) + return err; + dma_set_max_seg_size(pfdev->dev, UINT_MAX);
irq = platform_get_irq_byname(to_platform_device(pfdev->dev), "gpu");