linux-kernel - Re: sound/soc/qcom/sdw.c:93: warning: cannot understand function prototype: 'ret = sdw_enable

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Message-ID: <aBHWImb+uElWcLk2@rli9-mobl>
Date: Wed, 30 Apr 2025 15:49:54 +0800
From: Philip Li <philip.li@...el.com>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
CC: Krzysztof Kozlowski <krzk@...nel.org>, kernel test robot <lkp@...el.com>,
	<oe-kbuild-all@...ts.linux.dev>, <linux-kernel@...r.kernel.org>, Mark Brown
	<broonie@...nel.org>
Subject: Re: sound/soc/qcom/sdw.c:93: warning: cannot understand function
 prototype: 'ret = sdw_enable_stream(sruntime); '

On Wed, Apr 30, 2025 at 08:43:55AM +0200, Geert Uytterhoeven wrote:
> On Tue, 29 Apr 2025 at 10:18, Krzysztof Kozlowski <krzk@...nel.org> wrote:
> > On 26/04/2025 15:32, kernel test robot wrote:
> > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > > head:   02ddfb981de88a2c15621115dd7be2431252c568
> > > commit: db7e59e6a39a4d3d54ca8197c796557e6d480b0d ASoC: qcom: sc7280: Fix missing Soundwire runtime stream alloc
> > > date:   6 months ago
> > > config: sh-randconfig-002-20250426 (https://download.01.org/0day-ci/archive/20250426/202504262154.sBmNTrcB-lkp@intel.com/config)
> > > compiler: sh4-linux-gcc (GCC) 12.4.0
> > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250426/202504262154.sBmNTrcB-lkp@intel.com/reproduce)
> > >
> > > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > > the same patch/commit), kindly add following tags
> > > | Reported-by: kernel test robot <lkp@...el.com>
> > > | Closes: https://lore.kernel.org/oe-kbuild-all/202504262154.sBmNTrcB-lkp@intel.com/
> > >
> > > All warnings (new ones prefixed by >>):
> > >
> > >>> sound/soc/qcom/sdw.c:93: warning: cannot understand function prototype: 'ret = sdw_enable_stream(sruntime); '
> >
> > This looks like compiler issue. I check the config and SOUNDWIRE is
> > selected thus sdw_enable_stream() is reachable. I also cannot reproduce
> > it sh4-linux-gnu-gcc v14.2.
> 
> I also couldn't reproduce it, using the specified commit ID and
> the reproducer instructions, with gcc versions 12.3.0 (Ubuntu
> 12.3.0-17ubuntu1) and 13.3.0 (Ubuntu 13.3.0-6ubuntu2~24.04).

Sorry for the false positive, it does appear during the bisection process and
results in this first bad commit, which could be related to kernel-doc. 

But fail to reproduce it now as well on gcc-12.4. We will follow up to further
check the bisection process and reproduce steps.

> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> -- 
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds
>