From: Takashi Iwai Date: Wed, 16 Jul 2014 15:45:27 +0000 (+0200) Subject: ALSA: pcm: Introduce protocol version field to sw_params X-Git-Tag: cleanup-for-v3.18~103^2~13^2~7^2~1 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=589008106b9b64153554c8f3f120ee512b134bb5;p=pandora-kernel.git ALSA: pcm: Introduce protocol version field to sw_params For controlling the new fields more strictly, add sw_params.proto field indicating the protocol version of the user-space. User-space should fill the SNDRV_PCM_VERSION value it's built with, then kernel can know whether the new fields should be evaluated or not. And now tstamp_type field is evaluated only when the valid value is set there. This avoids the wrong override of tstamp_type to zero, which is SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY. Signed-off-by: Takashi Iwai --- Reading git-diff-tree failed