[alsa-devel] [PATCH] ak4642: show error if register write fails

Ben Dooks ben.dooks at codethink.co.uk
Tue Mar 11 12:18:30 CET 2014

On 10/03/14 23:40, Mark Brown wrote:
> On Mon, Mar 10, 2014 at 06:15:55PM +0000, Ben Dooks wrote:
>> +/* wrapper functions to show any errors to updating register values */
>> +
>> +static inline int ak4642_update_bits(struct snd_soc_codec *codec,
>> +				     unsigned int reg,
>> +				     unsigned int mask, unsigned int val)
>> +{
>> +	int ret = snd_soc_update_bits(codec, reg, mask, val);
>> +
>> +	if (ret < 0) {
>> +		pr_info("%s: error %d writing %04x (%08x, mask %08x)\n",
>> +			codec->name, ret, reg, mask, val);
> Two things here.  One is that this should be a dev_err() and the other
> is that if this is worth doing shouldn't it just be in the core - I see
> nothing driver specific here?

Sorry, didn't see a device in "struct snd_soc_codec *codec" so I went
for a printk (although it was pr_info instead of pr_err).

I did think if this should be something in the snd_soc_update_bits
and snd_soc_write() calls after sending the patch.

If you think that changing the two snd_soc calls to print errors
when anything bad happens then that would also be a good idea then
I can send a patch for that.

Ben Dooks				http://www.codethink.co.uk/
Senior Engineer				Codethink - Providing Genius

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