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drm/panfrost: Check for error num after setting mask

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[ Upstream commit 44ab30b056 ]

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: f3ba91228e ("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-jiasheng@iscas.ac.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiasheng Jiang
2022-01-06 11:03:26 +08:00
committed by Greg Kroah-Hartman
parent 5d1114ede5
commit 4a9c268a40
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/panfrost/panfrost_gpu.c
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@@ -359,8 +359,11 @@ 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");