[alsa-devel] [RFC][PATCH] ASoC: Fix sync reg_cache with the hardware in wm8990_resume
axel.lin at gmail.com
Wed Oct 5 12:39:57 CEST 2011
2011/10/5 Mark Brown <broonie at opensource.wolfsonmicro.com>:
> On Wed, Oct 05, 2011 at 06:16:49PM +0800, Axel Lin wrote:
>> Current code has off-by-one bug of checking WM8990_RESET.
>> Besides, according to wm8990 datasheet (2-wire serial control mode):
>> A control word consists of 24 bits. The first 8 bits are address bits,
>> the remaining 16 bits are data bits.
>> Current code uses 7 bits address bits and 9 bits data bits which is incorrect.
> We should just convert drivers like this to snd_soc_cache_sync().
Yes. It would be better convert it to snd_soc_cache_sync().
Just think this patch may be useful for 3.1 or earlier kernel version.
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