ALSA: Remove superfluous hwdep ops

Remove NOP hwdep ops in sound drivers.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 21 deletions

diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 00397c8a765b..2bde79216fa5 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -78,7 +78,6 @@ struct usb_mixer_interface {
 
         /* Sound Blaster remote control stuff */
         const struct rc_config *rc_cfg;
-        unsigned long rc_hwdep_open;
         u32 rc_code;
         wait_queue_head_t rc_waitq;
         struct urb *rc_urb;
@@ -1797,24 +1796,6 @@ static void snd_usb_soundblaster_remote_complete(struct urb *urb)
         wake_up(&mixer->rc_waitq);
 }
 
-static int snd_usb_sbrc_hwdep_open(struct snd_hwdep *hw, struct file *file)
-{
-        struct usb_mixer_interface *mixer = hw->private_data;
-
-        if (test_and_set_bit(0, &mixer->rc_hwdep_open))
-                return -EBUSY;
-        return 0;
-}
-
-static int snd_usb_sbrc_hwdep_release(struct snd_hwdep *hw, struct file *file)
-{
-        struct usb_mixer_interface *mixer = hw->private_data;
-
-        clear_bit(0, &mixer->rc_hwdep_open);
-        smp_mb__after_clear_bit();
-        return 0;
-}
-
 static long snd_usb_sbrc_hwdep_read(struct snd_hwdep *hw, char __user *buf,
                                      long count, loff_t *offset)
 {
@@ -1867,9 +1848,8 @@ static int snd_usb_soundblaster_remote_init(struct usb_mixer_interface *mixer)
         hwdep->iface = SNDRV_HWDEP_IFACE_SB_RC;
         hwdep->private_data = mixer;
         hwdep->ops.read = snd_usb_sbrc_hwdep_read;
-        hwdep->ops.open = snd_usb_sbrc_hwdep_open;
-        hwdep->ops.release = snd_usb_sbrc_hwdep_release;
         hwdep->ops.poll = snd_usb_sbrc_hwdep_poll;
+        hwdep->exclusive = 1;
 
         mixer->rc_urb = usb_alloc_urb(0, GFP_KERNEL);
         if (!mixer->rc_urb)