openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Joe Perches 2012-11-16 23:35:16 -08:00 committed by Takashi Iwai
parent 701ef3205e
commit 190006f9d6
1 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sound/usb/endpoint.c
View File

@ -485,15 +485,10 @@ struct snd_usb_endpoint *snd_usb_add_endpoint(struct snd_usb_audio *chip,
static int wait_clear_urbs(struct snd_usb_endpoint *ep) static int wait_clear_urbs(struct snd_usb_endpoint *ep)
{ {
unsigned long end_time = jiffies + msecs_to_jiffies(1000); unsigned long end_time = jiffies + msecs_to_jiffies(1000);
unsigned int i;
int alive; int alive;
do { do {
alive = 0; alive = bitmap_weight(&ep->active_mask, ep->nurbs);
for (i = 0; i < ep->nurbs; i++)
if (test_bit(i, &ep->active_mask))
alive++;
if (!alive) if (!alive)
break; break;