staging: emxx_udc: Add checks for dma_alloc_coherent()

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[ Upstream commit f6510a93cf ]

As the dma_alloc_coherent may return NULL, the return value needs to be
checked to avoid NULL poineter dereference.

Signed-off-by: Yuan Can <yuancan@huawei.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Link: https://lore.kernel.org/r/20230119083119.16956-1-yuancan@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Yuan Can 2023-01-19 08:31:19 +00:00 • committed by Greg Kroah-Hartman

parent 39a8d41655

commit 9e8a0c4ee3

1 changed files with 6 additions and 1 deletions

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drivers/staging/emxx_udc/emxx_udc.c

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