From: Joe Perches <joe@perches.com>
Date: Sat, 17 Nov 2012 07:35:16 +0000 (-0800)
Subject: ALSA: usb-audio: use bitmap_weight
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=190006f9d6594ee9ef4775ec09edda7df76fc8f1;p=openwrt%2Fstaging%2Fblogic.git

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 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;