linux-kernel - [PATCH -next] drm/amdgpu: remove set but not used variable 'ring' in psp_v3_1_ring

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Message-ID: <1538219769-37710-1-git-send-email-yuehaibing@huawei.com>
Date:   Sat, 29 Sep 2018 11:16:09 +0000
From:   YueHaibing <yuehaibing@...wei.com>
To:     <alexander.deucher@....com>, <christian.koenig@....com>,
        <David1.Zhou@....com>, <airlied@...ux.ie>, <Shaoyun.Liu@....com>,
        <Ken.Wang@....com>, <Feifei.Xu@....com>, <ray.huang@....com>,
        <evan.quan@....com>
CC:     YueHaibing <yuehaibing@...wei.com>,
        <amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
        <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>
Subject: [PATCH -next] drm/amdgpu: remove set but not used variable 'ring' in psp_v3_1_ring_stop

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/gpu/drm/amd/amdgpu/psp_v3_1.c: In function 'psp_v3_1_ring_stop':
drivers/gpu/drm/amd/amdgpu/psp_v3_1.c:359:19: warning:
 variable 'ring' set but not used [-Wunused-but-set-variable]

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/gpu/drm/amd/amdgpu/psp_v3_1.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
index e1ebf77..cc5e3ac 100644
--- a/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
+++ b/drivers/gpu/drm/amd/amdgpu/psp_v3_1.c
@@ -356,12 +356,9 @@ static int psp_v3_1_ring_stop(struct psp_context *psp,
 			      enum psp_ring_type ring_type)
 {
 	int ret = 0;
-	struct psp_ring *ring;
 	unsigned int psp_ring_reg = 0;
 	struct amdgpu_device *adev = psp->adev;
 
-	ring = &psp->km_ring;
-
 	/* Write the ring destroy command to C2PMSG_64 */
 	psp_ring_reg = 3 << 16;
 	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);