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| author | Takashi Iwai <tiwai@suse.de> | 2006-11-14 13:03:19 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@server.perex.cz> | 2006-12-20 08:55:54 +0100 |
| commit | e3a5d59a17e9a42e3f3e0e37342b2679bab2ff43 (patch) | |
| tree | 631335a715870175f194b4bfec4690e6041fed79 /include/sound/pcm_oss.h | |
| parent | ba8bdf8584c6f8af6d009dfd716ea5ee37fc15cd (diff) | |
| download | linux-e3a5d59a17e9a42e3f3e0e37342b2679bab2ff43.tar.gz linux-e3a5d59a17e9a42e3f3e0e37342b2679bab2ff43.tar.bz2 linux-e3a5d59a17e9a42e3f3e0e37342b2679bab2ff43.zip | |
[ALSA] Fix races in PCM OSS emulation
Fixed the race among multiple threads accessing the OSS PCM
instance concurrently by simply introducing a mutex for protecting
a setup of the PCM.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'include/sound/pcm_oss.h')
| -rw-r--r-- | include/sound/pcm_oss.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/pcm_oss.h b/include/sound/pcm_oss.h index c854647b6f3c..1cd4f64cdf31 100644 --- a/include/sound/pcm_oss.h +++ b/include/sound/pcm_oss.h @@ -56,6 +56,7 @@ struct snd_pcm_oss_runtime { size_t mmap_bytes; char *buffer; /* vmallocated period */ size_t buffer_used; /* used length from period buffer */ + struct mutex params_lock; #ifdef CONFIG_SND_PCM_OSS_PLUGINS struct snd_pcm_plugin *plugin_first; struct snd_pcm_plugin *plugin_last; |