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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2018-10-30 15:31:15 +0900
committerTakashi Iwai <tiwai@suse.de>2018-10-30 12:22:12 +0100
commit826b5de90c0bca4e9de6231da9e1730480621588 (patch)
tree504349d4e97ca62d7aa72a97a017b09b3d113742 /drivers/char/tb0219.c
parentac237c28d5ac1b241d58b1b7b4b9fa10efb22fb5 (diff)
ALSA: firewire-lib: fix insufficient PCM rule for period/buffer sizesound-fix-4.20-rc1
In a former commit, PCM constraint based on LCM of SYT_INTERVAL was obsoleted with PCM rule. However, the new PCM rule brings -EINVAL in some cases that max/min values of size of buffer/period is not multiples of one of values of SYT_INTERVAL. For example, pulseaudio always fail to configure PCM substream. This commit changes strategy for the PCM rule. Although the buggy rules had a single dependency (rate from period, period from rate, rate from buffer, buffer from rate), a revised rule has double dependencies (period from period/rate, buffer from buffer/rate). A step of value is calculated with table of SYT_INTERVAL and list of available rates. This prevents interval template which brings -EINVAL to a call of snd_interval_refine(). Fixes: 5950229582bc('ALSA: firewire-lib: add PCM rules to obsolete PCM constraints based on LCM of SYT_INTERVAL') Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/char/tb0219.c')
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