Re: [PATCH] drm/amdgpu: fix uninitialized return value

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On Tue, May 11, 2021 at 1:25 PM ts8060 <ts8060@xxxxxxxxxxxxxxxx> wrote:
>
> The amdgpu_display_suspend_helper() function uses an uninitialized
> variable as its return value, causing a failure to suspend/resume on a
> Radeon R7 240/340 GPU, with the following error in dmesg:
> [drm:amdgpu_device_ip_suspend_phase1 [amdgpu]] *ERROR* suspend of IP block <dce_v6_0> failed 118489088
>
> Initialize the variable to 0.
>
> Signed-off-by: Tim Saunders <ts8060@xxxxxxxxxxxxxxxx>

Already fixed here:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4b12ee6f426e5e36396501a58f3a1af5b92a7e06

Alex

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> index 8a1fb8b6606e..27626d8a0647 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
> @@ -1544,7 +1544,7 @@ int amdgpu_display_suspend_helper(struct amdgpu_device *adev)
>         struct drm_crtc *crtc;
>         struct drm_connector *connector;
>         struct drm_connector_list_iter iter;
> -       int r;
> +       int r = 0;
>
>         /* turn off display hw */
>         drm_modeset_lock_all(dev);
> --
> 2.31.1
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