From: Qiao Zhou Date: Wed, 3 Dec 2014 02:13:43 +0000 (+0800) Subject: ASoC: soc-pcm: do not hw_free BE if it's still used X-Git-Tag: omap-for-v3.20/drop-legacy-3517~123^2~20^2~29^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36fba62cce8184ea6a0cecfa43f07f712716a6f8;p=pandora-kernel.git ASoC: soc-pcm: do not hw_free BE if it's still used Do not free BE hw if it's still used by other FE during dpcm runtime shutdown. Otherwise the BE runtime state will be STATE_HW_FREE and won't be updated to STATE_CLOSE when shutdown ends, because BE dai shutdown function won't close pcm when detecting BE is still under use. With STATE_HW_FREE, BE can't be triggered start again. This corner case can easily appear when one BE is used by two FE, without this patch "ASoC: dpcm: Fix race between FE/BE updates and trigger"(ea9d0d771fcd32cd56070819749477d511ec9117). One FE tries to shutdown but it's raced against xrun on another FE. It improves the be dai hw_free logic. Signed-off-by: Qiao Zhou Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- Reading git-diff-tree failed