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| author |   Su Hui <suhui@nfschina.com> | 2023-08-23 10:52:13 +0800 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2023-08-24 10:02:01 +0200 |
| commit | 67de40c9df94037769967ba28c7d951afb45b7fb (patch) | |
| tree | 83485551819cc0b3e97c2b6fd19ede8b63838895 /tools/perf/scripts/python/stackcollapse.py | |
| parent | ALSA: pcmtest: Add support for pcm pausing (diff) | |
| download | linux-rng-67de40c9df94037769967ba28c7d951afb45b7fb.tar.xz linux-rng-67de40c9df94037769967ba28c7d951afb45b7fb.zip | |
ALSA: ac97: Fix possible error value of *rac97
Before committing 79597c8bf64c, *rac97 always be NULL if there is
an error. When error happens, make sure *rac97 is NULL is safer.
For examble, in snd_vortex_mixer():
err = snd_ac97_mixer(pbus, &ac97, &vortex->codec);
vortex->isquad = ((vortex->codec == NULL) ?
0 : (vortex->codec->ext_id&0x80));
If error happened but vortex->codec isn't NULL, this may cause some
problems.
Move the judgement order to be clearer and better.
Fixes: 79597c8bf64c ("ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer")
Suggested-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Su Hui <suhui@nfschina.com>
Link: https://lore.kernel.org/r/20230823025212.1000961-1-suhui@nfschina.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions