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| author | Takashi Iwai <tiwai@suse.de> | 2014-02-19 17:30:29 +0400 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-02-02 16:21:21 +0300 |
| commit | 23c18d4bfd73ee24070849faf98b3ab01263a3c4 (patch) | |
| tree | 944e0e24bd847fdbbddd8baf5ab0976c0fdcfa81 /sound/core/rawmidi.c | |
| parent | 92b7952da8279189aad352efbf9f2e7001de9524 (diff) | |
| download | linux-23c18d4bfd73ee24070849faf98b3ab01263a3c4.tar.xz | |
ALSA: control: Provide a helper to look for the preferred subdevice
Instead of open-coding the search over the control file loop, provide
a helper function for the preferred subdevice assigned to the current
process.
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/rawmidi.c')
| -rw-r--r-- | sound/core/rawmidi.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 6fc71a4c8a51..be18162c380f 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -369,7 +369,6 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file) struct snd_rawmidi *rmidi; struct snd_rawmidi_file *rawmidi_file = NULL; wait_queue_t wait; - struct snd_ctl_file *kctl; if ((file->f_flags & O_APPEND) && !(file->f_flags & O_NONBLOCK)) return -EINVAL; /* invalid combination */ @@ -413,16 +412,7 @@ static int snd_rawmidi_open(struct inode *inode, struct file *file) init_waitqueue_entry(&wait, current); add_wait_queue(&rmidi->open_wait, &wait); while (1) { - subdevice = -1; - read_lock(&card->ctl_files_rwlock); - list_for_each_entry(kctl, &card->ctl_files, list) { - if (kctl->pid == task_pid(current)) { - subdevice = kctl->prefer_rawmidi_subdevice; - if (subdevice != -1) - break; - } - } - read_unlock(&card->ctl_files_rwlock); + subdevice = snd_ctl_get_preferred_subdevice(card, SND_CTL_SUBDEV_RAWMIDI); err = rawmidi_open_priv(rmidi, subdevice, fflags, rawmidi_file); if (err >= 0) break; @@ -862,7 +852,7 @@ static int snd_rawmidi_control_ioctl(struct snd_card *card, if (get_user(val, (int __user *)argp)) return -EFAULT; - control->prefer_rawmidi_subdevice = val; + control->preferred_subdevice[SND_CTL_SUBDEV_RAWMIDI] = val; return 0; } case SNDRV_CTL_IOCTL_RAWMIDI_INFO: |