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>

diff --git a/sound/usb/endpoint.c b/sound/usb/endpoint.c
index 34de6f2..51a9aa3 100644 (file)
--- 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;