From 62f09c3d321c82981ae3f2dd7e32bc4c73379a7e Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 27 Feb 2006 09:53:03 +0100 Subject: [PATCH] [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 --- sound/usb/usbmidi.c | 6 +++--- 1 file 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; } -- 2.30.2