drm/amdgpu: correct comment to clear up the confusion

Former comment looks to be one intended behavior in code,
actually it's not. So correct it.

Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index be289f0..b33a4eb 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -4374,7 +4374,12 @@ static int gfx_v9_0_ecc_late_init(void *handle)
        struct amdgpu_device *adev = (struct amdgpu_device *)handle;
        int r;
 
-       /* limit gds clearing operation in cold boot sequence */
+       /*
+        * Temp workaround to fix the issue that CP firmware fails to
+        * update read pointer when CPDMA is writing clearing operation
+        * to GDS in suspend/resume sequence on several cards. So just
+        * limit this operation in cold boot sequence.
+        */
        if (!adev->in_suspend) {
                r = gfx_v9_0_do_edc_gds_workarounds(adev);
                if (r)