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| author | Clemens Ladisch <clemens@ladisch.de> | 2009-11-02 09:35:44 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-11-06 14:32:06 +0100 |
| commit | 25d27eded1f4fc728e64f443adc339b5229be5d7 (patch) | |
| tree | b738266467fc0f85d9f7f29e439dfff8e33da4c0 /sound/core/pcm.c | |
| parent | 31cef7076ed9409a33f19ea372d6dc5fdefe27ae (diff) | |
| download | op-kernel-dev-25d27eded1f4fc728e64f443adc339b5229be5d7.zip op-kernel-dev-25d27eded1f4fc728e64f443adc339b5229be5d7.tar.gz | |
control: use reference-counted pid
Instead of storing the PID number, take a reference to the task's pid
structure. This protects against duplicates due to PID overflows, and
using pid_vnr() ensures that the PID returned by snd_ctl_elem_info() is
correct as seen from the current namespace.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/pcm.c')
| -rw-r--r-- | sound/core/pcm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/core/pcm.c b/sound/core/pcm.c index c69c60b..8e2c783 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -809,7 +809,7 @@ int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, card = pcm->card; read_lock(&card->ctl_files_rwlock); list_for_each_entry(kctl, &card->ctl_files, list) { - if (kctl->pid == current->pid) { + if (kctl->pid == task_pid(current)) { prefer_subdevice = kctl->prefer_pcm_subdevice; if (prefer_subdevice != -1) break; |
