The multi-component patch(commit f0fba2ad1) introduced a generic register cache framework. But the wm8753 driver still uses its own register cache for its private functions, while functions from the ASoC core use the generic cache. Thus we end up with two from each other incoherent caches, which leads to undefined behaviour. This pachtes fixes the issue by changing the wm8741 driver to use the generic cache framework.
Signed-off-by: Lars-Peter Clausen lars@metafoo.de Cc: Ian Lartey ian@opensource.wolfsonmicro.com Cc: Dimitris Papastamos dp@opensource.wolfsonmicro.com
--- Compile tested only --- sound/soc/codecs/wm8741.c | 10 +++++----- 1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c index 35789b7..494f2d3 100644 --- a/sound/soc/codecs/wm8741.c +++ b/sound/soc/codecs/wm8741.c @@ -40,7 +40,6 @@ static const char *wm8741_supply_names[WM8741_NUM_SUPPLIES] = { /* codec private data */ struct wm8741_priv { enum snd_soc_control_type control_type; - u16 reg_cache[WM8741_REGISTER_COUNT]; struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES]; unsigned int sysclk; struct snd_pcm_hw_constraint_list *sysclk_constraints; @@ -422,6 +421,7 @@ static int wm8741_resume(struct snd_soc_codec *codec) static int wm8741_probe(struct snd_soc_codec *codec) { struct wm8741_priv *wm8741 = snd_soc_codec_get_drvdata(codec); + u16 *reg_cache = codec->reg_cache; int ret = 0;
ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8741->control_type); @@ -437,10 +437,10 @@ static int wm8741_probe(struct snd_soc_codec *codec) }
/* Change some default settings - latch VU */ - wm8741->reg_cache[WM8741_DACLLSB_ATTENUATION] |= WM8741_UPDATELL; - wm8741->reg_cache[WM8741_DACLMSB_ATTENUATION] |= WM8741_UPDATELM; - wm8741->reg_cache[WM8741_DACRLSB_ATTENUATION] |= WM8741_UPDATERL; - wm8741->reg_cache[WM8741_DACRLSB_ATTENUATION] |= WM8741_UPDATERM; + reg_cache[WM8741_DACLLSB_ATTENUATION] |= WM8741_UPDATELL; + reg_cache[WM8741_DACLMSB_ATTENUATION] |= WM8741_UPDATELM; + reg_cache[WM8741_DACRLSB_ATTENUATION] |= WM8741_UPDATERL; + reg_cache[WM8741_DACRLSB_ATTENUATION] |= WM8741_UPDATERM;
snd_soc_add_controls(codec, wm8741_snd_controls, ARRAY_SIZE(wm8741_snd_controls));