linux-kernel - Re: linux-next: build failure after merge of the random tree

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Message-ID: <f0a1812e-4235-4d32-ac72-f2d8f1cb0d5d@sirena.org.uk>
Date: Fri, 23 Jan 2026 22:10:56 +0000
From: Mark Brown <broonie@...nel.org>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Theodore Ts'o <tytso@....edu>, "Jason A. Donenfeld" <Jason@...c4.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the random tree

On Fri, Jan 23, 2026 at 11:56:04PM +0200, Andy Shevchenko wrote:
> On Fri, Jan 23, 2026 at 09:48:19PM +0000, Mark Brown wrote:

> > After merging the random tree, today's linux-next build (arm
> > multi_v7_defconfig) failed like this:

> > /tmp/next/build/arch/arm/include/asm/smp.h:73:43: warning: 'struct completion' declared inside parameter list will not be visible outside of this definition or declaration
> >    73 | extern int register_ipi_completion(struct completion *completion, int cpu);
> >       |                                           ^~~~~~~~~~

> Wouldn't adding

> struct completion;

> at the top of arch/arm/include/asm/smp.h fix this?

That ougtht to do the bulk of it, though I see there's also at least:

/tmp/next/build/include/linux/dma-fence.h: In function '__dma_fence_is_later':
/tmp/next/build/include/linux/dma-fence.h:501:22: error: implicit declaration of
 function 'lower_32_bits' [-Wimplicit-function-declaration]
  501 |         return (int)(lower_32_bits(f1) - lower_32_bits(f2)) > 0;
      |                      ^~~~~~~~~~~~~

and

In file included from /tmp/next/build/drivers/power/supply/tps65090-charger.c:10
:
/tmp/next/build/include/linux/freezer.h: In function 'try_to_freeze':
/tmp/next/build/include/linux/freezer.h:58:9: error: implicit declaration of function 'might_sleep' [-Wimplicit-function-declaration]
   58 |         might_sleep();
      |         ^~~~~~~~~~~

in there.

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