linux-kernel - Re: [PATCH] drm/amdgpu: initialize r variable into amdgpu_cs

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Date:   Tue, 20 Sep 2022 14:23:58 +0200
From:   Christian König <christian.koenig@....com>
To:     Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
Cc:     linuxfancy@...glegroups.com, linux-amarula@...rulasolutions.com,
        sudipm.mukherjee@...il.com,
        Alex Deucher <alexander.deucher@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>,
        Andrey Grodzovsky <andrey.grodzovsky@....com>,
        Luben Tuikov <luben.tuikov@....com>,
        Philip Yang <Philip.Yang@....com>,
        amd-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] drm/amdgpu: initialize r variable into amdgpu_cs_submit
 function

Am 20.09.22 um 14:22 schrieb Tommaso Merciai:
> The builds of arm64 allmodconfig with clang failed to build
> next-20220920 with the following result:
>
> 1190:3: error: variable 'r' is uninitialized when used here [-Werror,-Wuninitialized]
> note: initialize the variable 'r' to silence this warning
>
> This fix compilation error

I've already send a patch to fix this to the mailing list 7 Minutes ago :)

Please review or ack that one.

Thanks,
Christian.

>
> Signed-off-by: Tommaso Merciai <tommaso.merciai@...rulasolutions.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> index 58088c663125..efa3dc9b69fd 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
> @@ -1168,7 +1168,7 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p,
>   	struct amdgpu_bo_list_entry *e;
>   	struct amdgpu_job *job;
>   	uint64_t seq;
> -	int r;
> +	int r = 0;
>   
>   	job = p->job;
>   	p->job = NULL;