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(parent: ef98a48) | patch
ALSA: pcm: Fix error checks of default read/write copy ops
authorTakashi Iwai <tiwai@suse.de>
Sat, 2 Sep 2023 06:10:43 +0000 (08:10 +0200)
committerTakashi Iwai <tiwai@suse.de>
Sat, 2 Sep 2023 06:11:48 +0000 (08:11 +0200)
commite14ebde5df2ade7164b3adc3b8644d531a78a785
tree7cc2f035d4748258f56952c98b79ba027a855c02tree | snapshot
parentef98a4883298bc2ead30ade6b6a10c4ac4bc07c8commit | diff
ALSA: pcm: Fix error checks of default read/write copy ops

copy_from/to_iter() returns the actually copied bytes, and the more
correct check should be to compare with the given bytes, instead of
zero-check.

Fixes: cf393babb37a ("ALSA: pcm: Add copy ops with iov_iter")
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Closes: https://lore.kernel.org/r/20230902053044.GJ3390869@ZenIV
Link: https://lore.kernel.org/r/20230902061044.19366-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/pcm_lib.c diff | blob | history
Domain: System / Kernel;