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Diffstat (limited to 'sound/core/control.c')
-rw-r--r--sound/core/control.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/sound/core/control.c b/sound/core/control.c
index a8b7fabe645..268ab747122 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -75,7 +75,7 @@ static int snd_ctl_open(struct inode *inode, struct file *file)
ctl->card = card;
ctl->prefer_pcm_subdevice = -1;
ctl->prefer_rawmidi_subdevice = -1;
- ctl->pid = current->pid;
+ ctl->pid = get_pid(task_pid(current));
file->private_data = ctl;
write_lock_irqsave(&card->ctl_files_rwlock, flags);
list_add_tail(&ctl->list, &card->ctl_files);
@@ -125,6 +125,7 @@ static int snd_ctl_release(struct inode *inode, struct file *file)
control->vd[idx].owner = NULL;
up_write(&card->controls_rwsem);
snd_ctl_empty_read_queue(ctl);
+ put_pid(ctl->pid);
kfree(ctl);
module_put(card->module);
snd_card_file_remove(card, file);
@@ -672,7 +673,7 @@ static int snd_ctl_elem_info(struct snd_ctl_file *ctl,
info->access |= SNDRV_CTL_ELEM_ACCESS_LOCK;
if (vd->owner == ctl)
info->access |= SNDRV_CTL_ELEM_ACCESS_OWNER;
- info->owner = vd->owner_pid;
+ info->owner = pid_vnr(vd->owner->pid);
} else {
info->owner = -1;
}
@@ -827,7 +828,6 @@ static int snd_ctl_elem_lock(struct snd_ctl_file *file,
result = -EBUSY;
else {
vd->owner = file;
- vd->owner_pid = current->pid;
result = 0;
}
}
@@ -858,7 +858,6 @@ static int snd_ctl_elem_unlock(struct snd_ctl_file *file,
result = -EPERM;
else {
vd->owner = NULL;
- vd->owner_pid = 0;
result = 0;
}
}
@@ -1120,7 +1119,7 @@ static int snd_ctl_tlv_ioctl(struct snd_ctl_file *file,
goto __kctl_end;
}
if (vd->access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK) {
- if (file && vd->owner != NULL && vd->owner != file) {
+ if (vd->owner != NULL && vd->owner != file) {
err = -EPERM;
goto __kctl_end;
}