dma-debug: fix locking bug in check_unmap()

In check_unmap() it is possible to get into a dead-locked state if
dma_mapping_error is called.  The problem is that the bucket is locked in
check_unmap, and locked again by debug_dma_mapping_error which is called
by dma_mapping_error.  To resolve that we must release the lock on the
bucket before making the call to dma_mapping_error.

[[email protected]: restore 80-col trickery to be consistent with the rest of the file]
Signed-off-by: Alexander Duyck <[email protected]>
Cc: Joerg Roedel <[email protected]>
Reviewed-by: Shuah Khan <[email protected]>
Tested-by: Shuah Khan <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions