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Date: Tue, 6 Oct 2015 16:06:54 +0900 From: Jiada Wang <jiada_wang@...tor.com> To: <lgirdwood@...il.com>, <broonie@...nel.org>, <perex@...ex.cz>, <tiwai@...e.com>, <patches@...nsource.wolfsonmicro.com>, <alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org> CC: <jiada_wang@...tor.com> Subject: [PATCH 1/2] ASoC: WM8962: mark cache_dirty flag after software reset in pm_resume By doing software reset of wm8962 in pm_resume, all registers which have already been set will be reset to default value without regmap interface be involved, thus driver need to mark cache_dirty flag, to let regcache can be updated by regcache_sync(). Signed-off-by: Jiada Wang <jiada_wang@...tor.com> --- sound/soc/codecs/wm8962.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c index 293e47a..319ee38 100644 --- a/sound/soc/codecs/wm8962.c +++ b/sound/soc/codecs/wm8962.c @@ -3805,6 +3805,13 @@ static int wm8962_runtime_resume(struct device *dev) wm8962_reset(wm8962); + /* All registers have been reset to default value without calling + * to regmap interface, even if reset fails, some registers + * maybe in intermediate status, so we need to mark regmap + * cache_dirty flag. + */ + regcache_mark_dirty(wm8962->regmap); + /* SYSCLK defaults to on; make sure it is off so we can safely * write to registers if the device is declocked. */ -- 2.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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