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| author | Xi Wang <xi.wang@gmail.com> | 2012-11-14 02:12:11 +0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-11-14 11:03:27 +0400 |
| commit | 9af4e7fedab490fec6e831912859d6be92e9140d (patch) | |
| tree | ce8f13d7939d964dd7739c35af3af2d917cf3290 /sound/core | |
| parent | 1762a59d8e8b5e99f6f4a0f292b40f3cacb108ba (diff) | |
| download | linux-9af4e7fedab490fec6e831912859d6be92e9140d.tar.xz | |
ALSA: core: fix NULL checking in snd_pcm_plug_client_size()
The dereference snd_pcm_plug_stream(plug) should come after the NULL
check snd_BUG_ON(!plug).
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/oss/pcm_plugin.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/core/oss/pcm_plugin.c b/sound/core/oss/pcm_plugin.c index 71cc3ddf5c15..f0d7b1566a10 100644 --- a/sound/core/oss/pcm_plugin.c +++ b/sound/core/oss/pcm_plugin.c @@ -199,12 +199,13 @@ int snd_pcm_plugin_free(struct snd_pcm_plugin *plugin) snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *plug, snd_pcm_uframes_t drv_frames) { struct snd_pcm_plugin *plugin, *plugin_prev, *plugin_next; - int stream = snd_pcm_plug_stream(plug); + int stream; if (snd_BUG_ON(!plug)) return -ENXIO; if (drv_frames == 0) return 0; + stream = snd_pcm_plug_stream(plug); if (stream == SNDRV_PCM_STREAM_PLAYBACK) { plugin = snd_pcm_plug_last(plug); while (plugin && drv_frames > 0) { |