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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 /include/sound/control.h | |
| parent | control: remove snd_konctrol_volatile::owner_pid field (diff) | |
| download | linux-dev-25d27eded1f4fc728e64f443adc339b5229be5d7.tar.xz linux-dev-25d27eded1f4fc728e64f443adc339b5229be5d7.zip | |
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 'include/sound/control.h')
| -rw-r--r-- | include/sound/control.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/sound/control.h b/include/sound/control.h index 3517745d0a2d..112374dc0c58 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -86,10 +86,12 @@ struct snd_kctl_event { #define snd_kctl_event(n) list_entry(n, struct snd_kctl_event, list) +struct pid; + struct snd_ctl_file { struct list_head list; /* list of all control files */ struct snd_card *card; - pid_t pid; + struct pid *pid; int prefer_pcm_subdevice; int prefer_rawmidi_subdevice; wait_queue_head_t change_sleep; |