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[ALSA] usb-audio: optimize snd_usbmidi_count_bits()

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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>
This commit is contained in:
Clemens Ladisch 2006-02-27 09:53:03 +01:00 committed by Jaroslav Kysela
parent 62c5549ee2
commit 62f09c3d32
1 changed files with 3 additions and 3 deletions
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6
sound/usb/usbmidi.c
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@ -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) static unsigned int snd_usbmidi_count_bits(unsigned int x)
{ {
unsigned int bits = 0; unsigned int bits;
for (; x; x >>= 1) for (bits = 0; x; ++bits)
bits += x & 1; x &= x - 1;
return bits; return bits;
} }