linux-kernel - Re: [PATCH] drm/radeon: remove redundant assignment to reg

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAKwvOdnMibw77AvvWw7seB2PPamS_OLMUarSjdsa4w4OP1isKg@mail.gmail.com>
Date:   Mon, 24 Jan 2022 12:21:07 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Colin Ian King <colin.i.king@...il.com>
Cc:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Xinhui.Pan@....com, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH] drm/radeon: remove redundant assignment to reg

On Wed, Jan 19, 2022 at 2:46 PM Colin Ian King <colin.i.king@...il.com> wrote:
>
> The pointer reg is being assigned a value that is not read, the
> exit path via label 'out' never accesses it. The assignment is
> redundant and can be removed.
>
> Cleans up clang scan build warning:
> drivers/gpu/drm/radeon/radeon_object.c:570:3: warning: Value
> stored to 'reg' is never read [deadcode.DeadStores]
>
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>

Thanks for the patch!
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>

> ---
>  drivers/gpu/drm/radeon/radeon_object.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
> index 56ede9d63b12..87536d205593 100644
> --- a/drivers/gpu/drm/radeon/radeon_object.c
> +++ b/drivers/gpu/drm/radeon/radeon_object.c
> @@ -567,7 +567,6 @@ int radeon_bo_get_surface_reg(struct radeon_bo *bo)
>                 return 0;
>
>         if (bo->surface_reg >= 0) {
> -               reg = &rdev->surface_regs[bo->surface_reg];
>                 i = bo->surface_reg;
>                 goto out;
>         }
> --
> 2.33.1
>
>


-- 
Thanks,
~Nick Desaulniers