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From:   Bernard Zhao <bernard@vivo.com>
To:     Alex Deucher <alexander.deucher@amd.com>,
        =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>, Evan Quan <evan.quan@amd.com>,
        Luben Tuikov <luben.tuikov@amd.com>,
        Xiaojie Yuan <xiaojie.yuan@amd.com>,
        Changfeng <Changfeng.Zhu@amd.com>,
        Dave Airlie <airlied@redhat.com>,
        Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>,
        Thomas Zimmermann <tzimmermann@suse.de>,
        amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-kernel@vger.kernel.org
Cc:     opensource.kernel@vivo.com, Bernard Zhao <bernard@vivo.com>
Subject: [PATCH] drm/amd: move DRM_ERROR log out of the mutex protect area
Date:   Sun,  1 Nov 2020 19:14:17 -0800
Message-Id: <20201102031423.4033-1-bernard@vivo.com>
MIME-Version: 1.0
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Precedence: bulk

In function amdgpu_register_gpu_instance, there is no need to
protect DRM_ERROR in mutex mgpu_info.mutex.
This change is to make the code to run a bit fast.

Signed-off-by: Bernard Zhao <bernard@vivo.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index efda38349a03..cc61b0a5b8d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -104,8 +104,8 @@ void amdgpu_register_gpu_instance(struct amdgpu_device *adev)
 	mutex_lock(&mgpu_info.mutex);
 
 	if (mgpu_info.num_gpu >= MAX_GPU_INSTANCE) {
-		DRM_ERROR("Cannot register more gpu instance\n");
 		mutex_unlock(&mgpu_info.mutex);
+		DRM_ERROR("Cannot register more gpu instance\n");
 		return;
 	}
 
-- 
2.29.0