Re: [alsa-devel] [PATCH] ALSA: ac97c: Fix an error handling path in 'atmel_ac97c_probe()'

Takashi Iwai
2017-08-31T10:49:17Z

On Thu, 31 Aug 2017 12:37:16 +0200,
Mark Brown wrote:
>
> On Thu, Aug 31, 2017 at 12:23:14PM +0200, Takashi Iwai wrote:
>
> > Ah, wait, now I see your point. It was introduced by the very recent
> > patch through Mark's asoc tree (since it was wrongly labeled as "ASoC"
> > while it isn't). That patch looks indeed fishy. The change in
> > atmel_ac97c_resume() is also bad.
>
> The resume check looks fine? The function appears to do nothing other
> than the clk_prepare_enable().

Well, the patch behaves correctly but the code is ugly:

int ret = clk_prepare_enable(chip->pclk);

return ret;

> > So, I'd prefer reverting the wrong commit instead, and leave some
> > comment about the uselessness of clk_prepare_enable() return value
> > check.
>
> I'd rather keep the error checking there, it means that people don't
> need to open the code and verify it when they go scanning for potential
> problems.

OK.

Takashi