diff options
| author | Takashi Iwai <tiwai@suse.de> | 2007-05-19 18:30:35 +0400 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2007-05-31 11:06:02 +0400 |
| commit | 2704364248378193a24505e414dbfd4201053349 (patch) | |
| tree | a450aaa299dd3bb5fc596c7f0d7f19aab73f58d5 | |
| parent | 3b542985edeed1a1af124ee055e2d35a30489d93 (diff) | |
| download | linux-2704364248378193a24505e414dbfd4201053349.tar.xz | |
[ALSA] ali5451 - Fix possible NULL dereference
Reported by Eric Sesterhenn.
Fix the wrong checks of extra voice pointer, which may cause NULL
dereferences.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
| -rw-r--r-- | sound/pci/ali5451/ali5451.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c index e1ed59549c50..cb59f994c68f 100644 --- a/sound/pci/ali5451/ali5451.c +++ b/sound/pci/ali5451/ali5451.c @@ -1250,7 +1250,7 @@ static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream, evoice->substream = substream; } } else { - if (!evoice) { + if (evoice) { snd_ali_free_voice(codec, evoice); pvoice->extra = evoice = NULL; } @@ -1267,7 +1267,7 @@ static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream) struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL; snd_pcm_lib_free_pages(substream); - if (!evoice) { + if (evoice) { snd_ali_free_voice(codec, evoice); pvoice->extra = NULL; } @@ -1356,7 +1356,7 @@ static int snd_ali_playback_prepare(struct snd_pcm_substream *substream) VOL, CTRL, EC); - if (!evoice) { + if (evoice) { evoice->count = pvoice->count; evoice->eso = pvoice->count << 1; ESO = evoice->eso - 1; |