dma-mapping: use dma_get_mask in dma_addressing_limited

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We currently have cases where the dma_addressing_limited() gets
called with dma_mask unset. This causes a NULL pointer dereference.

Use dma_get_mask() accessor to prevent the crash.

Fixes: b866455423 ("dma-mapping: add a dma_addressing_limited helper")
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

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Eric Auger 2019-07-22 18:51:49 +02:00 • committed by Christoph Hellwig

parent 7b5cf701ea

commit 0653275001

1 changed files with 2 additions and 2 deletions

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include/linux/dma-mapping.h

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