Re: (subset) [PATCH] leds: trigger: ledtrig-cpu:: Fix a warning when compiling with W=1

[Lee Jones]

On Sat, 23 Sep 2023 09:15:38 +0200, Christophe JAILLET wrote:
> In order to teach the compiler that 'trig->name' will never be truncated,
> we need to tell it that 'cpu' is not negative.
> 
> When building with W=1, this fixes the following warnings:
> 
>   drivers/leds/trigger/ledtrig-cpu.c: In function ‘ledtrig_cpu_init’:
>   drivers/leds/trigger/ledtrig-cpu.c:155:56: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 5 [-Werror=format-truncation=]
>     155 |                 snprintf(trig->name, MAX_NAME_LEN, "cpu%d", cpu);
>         |                                                        ^~
>   drivers/leds/trigger/ledtrig-cpu.c:155:52: note: directive argument in the range [-2147483648, 7]
>     155 |                 snprintf(trig->name, MAX_NAME_LEN, "cpu%d", cpu);
>         |                                                    ^~~~~~~
>   drivers/leds/trigger/ledtrig-cpu.c:155:17: note: ‘snprintf’ output between 5 and 15 bytes into a destination of size 8
>     155 |                 snprintf(trig->name, MAX_NAME_LEN, "cpu%d", cpu);
>         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> [...]

Applied, thanks!

[1/1] leds: trigger: ledtrig-cpu:: Fix a warning when compiling with W=1
      commit: 5272d74b29929c8395720a7e35971a4f0fb6783d

--
Lee Jones [李琼斯]