linux-kernel - Re: [PATCH] drm/komeda: Clean warnings: candidate for 'gnu

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Date:   Thu, 14 Nov 2019 08:47:58 +0000
From:   Mihail Atanassov <Mihail.Atanassov@....com>
To:     "james qian wang (Arm Technology China)" <james.qian.wang@....com>
CC:     nd <nd@....com>, Liviu Dudau <Liviu.Dudau@....com>,
        "lowryli@....com" <lowryli@....com>, nd <nd@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH] drm/komeda: Clean warnings: candidate for 'gnu_printf’ format attribute

Hi James,

On Thursday, 14 November 2019 07:18:56 GMT james qian wang (Arm Technology China) wrote:
> komeda/komeda_pipeline.c: In function ‘komeda_component_add’:
> komeda/komeda_pipeline.c:213:3: warning: function ‘komeda_component_add’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
>    vsnprintf(c->name, sizeof(c->name), name_fmt, args);
>    ^~~~~~~~~

The fix for this one isn't in the patch below.

> 
> komeda/komeda_event.c: In function ‘komeda_sprintf’:
> komeda/komeda_event.c:31:2: warning: function ‘komeda_sprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Wsuggest-attribute=format]
>   num = vsnprintf(str->str + str->len, free_sz, fmt, args);
> 
> Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@....com>
> ---
>  drivers/gpu/drm/arm/display/komeda/komeda_event.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_event.c b/drivers/gpu/drm/arm/display/komeda/komeda_event.c
> index bf269683f811..977c38d516da 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_event.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_event.c
> @@ -17,6 +17,7 @@ struct komeda_str {
>  
>  /* return 0 on success,  < 0 on no space.
>   */
> +__printf(2, 3)
>  static int komeda_sprintf(struct komeda_str *str, const char *fmt, ...)
>  {
>  	va_list args;
> -- 
> 2.20.1
> 
> 


-- 
Mihail