Re: [PATCH AUTOSEL 5.2 040/123] ASoC: Fail card instantiation if DAI format setup fails

From: Mark Brown
Date: Tue Aug 27 2019 - 07:00:20 EST

On Sun, Aug 25, 2019 at 09:35:15PM -0400, Sasha Levin wrote:
> On Wed, Aug 14, 2019 at 10:22:13AM +0100, Mark Brown wrote:

> > > If the DAI format setup fails, there is no valid communication format
> > > between CPU and CODEC, so fail card instantiation, rather than continue
> > > with a card that will most likely not function properly.

> > This is another one where if nobody noticed a problem already and things
> > just happened to be working this might break things, it's vanishingly
> > unlikely to fix anything that was broken.

> Same as the other patch: this patch suggests it fixes a real bug, and if
> this patch is broken let's fix it.

If anyone ran into this on the older kernel and fixed or worked
around it locally there's a reasonable chance this will then
break what they're doing. The patch itself is perfectly fine but
that doesn't mean the rest of the changes it's being backported
into are also fine.

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