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authorClemens Ladisch <clemens@ladisch.de>2006-02-27 09:53:03 +0100
committerJaroslav Kysela <perex@suse.cz>2006-03-22 10:31:19 +0100
commit62f09c3d321c82981ae3f2dd7e32bc4c73379a7e (patch)
tree0faf32e373caaf63f53cc2ae9f03b80379620753
parent62c5549ee246fa30606f918f97c6b3cde2831292 (diff)
[ALSA] usb-audio: optimize snd_usbmidi_count_bits()
Modules: USB generic driver Reduce the code size of the snd_usbmidi_count_bits() function by using simpler operations. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
-rw-r--r--sound/usb/usbmidi.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index 7580339dba22..2b9d940c8064 100644
--- a/sound/usb/usbmidi.c
+++ b/sound/usb/usbmidi.c
@@ -871,10 +871,10 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
static unsigned int snd_usbmidi_count_bits(unsigned int x)
{
- unsigned int bits = 0;
+ unsigned int bits;
- for (; x; x >>= 1)
- bits += x & 1;
+ for (bits = 0; x; ++bits)
+ x &= x - 1;
return bits;
}