Subject: Re: linux-next: build warning after merge of the sound tree

From: Takashi Iwai <[email-masked]>
Date: Mon, 02 Sep 2024 08:22:14 +0200

On Mon, 02 Sep 2024 05:29:04 +0200,
Stephen Rothwell wrote:
> 
> Hi all,
> 
> After merging the sound tree, today's linux-next build (arm
> multi_v7_defconfig) produced this warning:
> 
> In file included from include/asm-generic/bug.h:22,
>                  from arch/arm/include/asm/bug.h:60,
>                  from include/linux/bug.h:5,
>                  from include/linux/io.h:12,
>                  from sound/core/pcm_memory.c:7:
> sound/core/pcm_memory.c: In function 'snd_pcm_lib_preallocate_proc_write':
> include/linux/kern_levels.h:5:25: warning: format '%zu' expects argument of type 'size_t', but argument 7 has type 'long unsigned int' [-Wformat=]
>     5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
>       |                         ^~~~~~
> include/linux/printk.h:135:25: note: in definition of macro 'no_printk'
>   135 |                 _printk(fmt, ##__VA_ARGS__);            \
>       |                         ^~~
> include/linux/kern_levels.h:15:25: note: in expansion of macro 'KERN_SOH'
>    15 | #define KERN_DEBUG      KERN_SOH "7"    /* debug-level messages */
>       |                         ^~~~~~~~
> include/linux/printk.h:620:19: note: in expansion of macro 'KERN_DEBUG'
>   620 |         no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
>       |                   ^~~~~~~~~~
> sound/core/pcm_memory.c:215:33: note: in expansion of macro 'pr_debug'
>   215 |                                 pr_debug("ALSA pcmC%dD%d%c,%d:%s: cannot preallocate for size %zu\n",
>       |                                 ^~~~~~~~
> 
> Introduced by commit
> 
>   43b42ed438bf ("ALSA: pcm: Fix the previous conversion to kstrtoul()")

My bad, will submit the fix patch.

thanks,

Takashi