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authorKrzysztof Helt <krzysztof.h1@wp.pl>2009-12-19 18:31:04 +0100
committerTakashi Iwai <tiwai@suse.de>2009-12-21 12:02:55 +0100
commit40962d7c741de1c21b6ce8516c1d9f8836fb383e (patch)
treea8e520b5bb7062f108919475834155c152ff2cc8 /COPYING
parentef86f581f7e8b29cb58d7f4e892e1a91b3805124 (diff)
ALSA: fix incorrect rounding direction in snd_interval_ratnum()
The direction of rounding is incorrect in the snd_interval_ratnum() It was detected with following parameters (sb8 driver playing 8kHz stereo file): - num is always 1000000 - requested frequency rate is from 7999 to 7999 (single frequency) The first loop calculates div_down(num, freq->min) which is 125. Thus, a frequency range's minimum value is 1000000 / 125 = 8000 Hz. The second loop calculates div_up(num, freq->max) which is 126 The frequency range's maximum value is 1000000 / 126 = 7936 Hz. The range maximum is lower than the range minimum so the function fails due to empty result range. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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