linux-kernel - RE: [PATCH] drm/amdgpu: Error handling issues about CHECKED

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Date:   Thu, 14 Feb 2019 05:09:45 +0000
From:   "Zhou, David(ChunMing)" <David1.Zhou@....com>
To:     Bo YU <tsu.yubo@...il.com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Koenig, Christian" <Christian.Koenig@....com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "daniel@...ll.ch" <daniel@...ll.ch>, "Zhu, Rex" <Rex.Zhu@....com>,
        "Grodzovsky, Andrey" <Andrey.Grodzovsky@....com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>
Subject: RE: [PATCH] drm/amdgpu: Error handling issues about CHECKED_RETURN



> -----Original Message-----
> From: Bo YU <tsu.yubo@...il.com>
> Sent: Thursday, February 14, 2019 12:46 PM
> To: Deucher, Alexander <Alexander.Deucher@....com>; Koenig, Christian
> <Christian.Koenig@....com>; Zhou, David(ChunMing)
> <David1.Zhou@....com>; airlied@...ux.ie; daniel@...ll.ch; Zhu, Rex
> <Rex.Zhu@....com>; Grodzovsky, Andrey
> <Andrey.Grodzovsky@....com>; dri-devel@...ts.freedesktop.org; linux-
> kernel@...r.kernel.org
> Cc: Bo Yu <tsu.yubo@...il.com>; amd-gfx@...ts.freedesktop.org
> Subject: [PATCH] drm/amdgpu: Error handling issues about
> CHECKED_RETURN
> 
> From: Bo Yu <tsu.yubo@...il.com>
> 
> Calling "amdgpu_ring_test_helper" without checking return value

We could need to continue to ring test even there is one ring test failed.

-David

> 
> Signed-off-by: Bo Yu <tsu.yubo@...il.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
> b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
> index 57cb3a51bda7..48465a61516b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
> @@ -4728,7 +4728,9 @@ static int gfx_v8_0_cp_test_all_rings(struct
> amdgpu_device *adev)
> 
>  	for (i = 0; i < adev->gfx.num_compute_rings; i++) {
>  		ring = &adev->gfx.compute_ring[i];
> -		amdgpu_ring_test_helper(ring);
> +		r = amdgpu_ring_test_helper(ring);
> +		if (r)
> +			return r;
>  	}
> 
>  	return 0;
> --
> 2.11.0