ALSA: usb-audio: use bitmap_weight

Use bitmap_weight to count the total number of bits set in bitmap.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 1 insertions, 6 deletions

diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 34de6f2faf61..51a9aa372cc7 100644
--- a/sound/usb/endpoint.c
+++ b/sound/usb/endpoint.c
@@ -485,15 +485,10 @@ __exit_unlock:
 static int wait_clear_urbs(struct snd_usb_endpoint *ep)
 {
         unsigned long end_time = jiffies + msecs_to_jiffies(1000);
-        unsigned int i;
         int alive;
 
         do {
-                alive = 0;
-                for (i = 0; i < ep->nurbs; i++)
-                        if (test_bit(i, &ep->active_mask))
-                                alive++;
-
+                alive = bitmap_weight(&ep->active_mask, ep->nurbs);
                 if (!alive)
                         break;