media: dm1105: fix missing error check for dma_alloc_coherent

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The return value of dm1105_dma_map(), which handles DMA memory allocation,
is ignored in dm1105_hw_init(). If dma_alloc_coherent() fails, the driver
will proceed using a NULL pointer for DMA transfers, leading to a kernel
oops or invalid hardware access.

Fix this by checking the return value and propagating -ENOMEM on failure.

Signed-off-by: Zhaoyang Yu <2426767509@qq.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

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Zhaoyang Yu 2026-04-15 14:49:09 +00:00 • committed by Hans Verkuil

parent e424693044

commit 3eaac9e02d

1 changed files with 6 additions and 1 deletions

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drivers/media/pci/dm1105/dm1105.c

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