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(parent: f7b2027) | patch
dma-mapping: benchmark: avoid needless copy_to_user if benchmark fails
authorFedor Pchelkin <pchelkin@ispras.ru>
Sat, 4 May 2024 11:47:02 +0000 (14:47 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 11 Jul 2024 10:51:21 +0000 (12:51 +0200)
commit8108b176ea37fa86c1c2b25335eec8b9177a212a
treee005d196e9f20bc6bb88cad8c6fcf35e7b865167tree | snapshot
parentf7b20274355ed8c00d98735a7d973d11dc703fb8commit | diff
dma-mapping: benchmark: avoid needless copy_to_user if benchmark fails

[ Upstream commit f7c9ccaadffd13066353332c13d7e9bf73b8f92d ]

If do_map_benchmark() has failed, there is nothing useful to copy back
to userspace.

Suggested-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
kernel/dma/map_benchmark.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git