linux-kernel - Re: [PATCH 11/11] ASoC: wm8994: Mark expected switch fall-through

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Message-ID: <20180803164504.GF6591@sirena.org.uk>
Date:   Fri, 3 Aug 2018 17:45:04 +0100
From:   Mark Brown <broonie@...nel.org>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     valdis.kletnieks@...edu, Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        patches@...nsource.cirrus.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, Takashi Iwai <tiwai@...e.com>
Subject: Re: [PATCH 11/11] ASoC: wm8994: Mark expected switch fall-through

On Fri, Aug 03, 2018 at 11:41:39AM -0500, Gustavo A. R. Silva wrote:
> On 08/03/2018 11:26 AM, valdis.kletnieks@...edu wrote:
> > On Wed, 01 Aug 2018 14:56:16 -0500, "Gustavo A. R. Silva" said:

> > Wait, what? This looks like the sort of bug -Wimplicit-fallthrough is supposed
> > to catch.  Unless for 'case WM8994_SYSCLK_OPCLK:' we actually do want to do a
> > whole bunch of snd_soc_component_update_bits() calls and then return -EINVAL
> > whether or not that case succeeded?

> Yeah, it seems like a bug. Can someone confirm this?

> Notice that this code has been there since 2010.

Basically nobody ever uses OPCLK so I'd be susprised if anyone ever
noticed.

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