linux-kernel - RE: [PATCH linux-next] drm/amdgpu/vcn: Remove unused assignment in vcn_v4_0

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Date:   Mon, 15 Aug 2022 14:15:50 +0000
From:   "Dong, Ruijing" <Ruijing.Dong@....com>
To:     Khalid Masum <khalid.masum.92@...il.com>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-kernel-mentees@...ts.linuxfoundation.org" 
        <linux-kernel-mentees@...ts.linuxfoundation.org>
CC:     "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Koenig, Christian" <Christian.Koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "Zhu, James" <James.Zhu@....com>,
        "Jiang, Sonny" <Sonny.Jiang@....com>,
        Wan Jiabing <wanjiabing@...o.com>, "Liu, Leo" <Leo.Liu@....com>
Subject: RE: [PATCH linux-next] drm/amdgpu/vcn: Remove unused assignment in
 vcn_v4_0_stop

[AMD Official Use Only - General]

Sorry, which "r" value was overwritten?  I didn't see the point of making this change.

Thanks
Ruijing

-----Original Message-----
From: Khalid Masum <khalid.masum.92@...il.com>
Sent: Monday, August 15, 2022 3:01 AM
To: amd-gfx@...ts.freedesktop.org; dri-devel@...ts.freedesktop.org; linux-kernel@...r.kernel.org; linux-kernel-mentees@...ts.linuxfoundation.org
Cc: Deucher, Alexander <Alexander.Deucher@....com>; Koenig, Christian <Christian.Koenig@....com>; Pan, Xinhui <Xinhui.Pan@....com>; David Airlie <airlied@...ux.ie>; Daniel Vetter <daniel@...ll.ch>; Zhu, James <James.Zhu@....com>; Jiang, Sonny <Sonny.Jiang@....com>; Dong, Ruijing <Ruijing.Dong@....com>; Wan Jiabing <wanjiabing@...o.com>; Liu, Leo <Leo.Liu@....com>; Khalid Masum <khalid.masum.92@...il.com>
Subject: [PATCH linux-next] drm/amdgpu/vcn: Remove unused assignment in vcn_v4_0_stop

The value assigned from vcn_v4_0_stop_dbg_mode to r is overwritten before it can be used. Remove this assignment.

Addresses-Coverity: 1504988 ("Unused value")
Fixes: 8da1170a16e4 ("drm/amdgpu: add VCN4 ip block support")
Signed-off-by: Khalid Masum <khalid.masum.92@...il.com>
---
 drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
index ca14c3ef742e..80b8a2c66b36 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
@@ -1154,7 +1154,7 @@ static int vcn_v4_0_stop(struct amdgpu_device *adev)
                fw_shared->sq.queue_mode |= FW_QUEUE_DPG_HOLD_OFF;

                if (adev->pg_flags & AMD_PG_SUPPORT_VCN_DPG) {
-                       r = vcn_v4_0_stop_dpg_mode(adev, i);
+                       vcn_v4_0_stop_dpg_mode(adev, i);
                        continue;
                }

--
2.37.1