[PATCH] drm/amdgpu: drop duplicated ecc check for vega10 (v4)

[Guchun Chen]

The same ECC check has been executed in amdgpu_ras_init for vega10,
prior to gmc_v9_0_late_init.

v2: drop all atombios helper callings
v3: use bit operation
v4: correct inline comment, remove parity check statement

Signed-off-by: Guchun Chen <guchun.chen at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 20 ++++++++------------
 1 file changed, 8 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 3dddbc60fe3d..4aeeef3bc628 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -1193,21 +1193,17 @@ static int gmc_v9_0_late_init(void *handle)
 	r = amdgpu_gmc_allocate_vm_inv_eng(adev);
 	if (r)
 		return r;
-	/* Check if ecc is available */
+
+	/*
+	 * Workaround performance drop issue with VBIOS enables partial
+	 * writes, while disables HBM ECC for vega10.
+	 */
 	if (!amdgpu_sriov_vf(adev) && (adev->asic_type == CHIP_VEGA10)) {
-		r = amdgpu_atomfirmware_mem_ecc_supported(adev);
-		if (!r) {
-			DRM_INFO("ECC is not present.\n");
+		if (adev->ras_features & ~(1 << AMDGPU_RAS_BLOCK__UMC |
+					1 << AMDGPU_RAS_BLOCK__DF)) {
 			if (adev->df.funcs->enable_ecc_force_par_wr_rmw)
 				adev->df.funcs->enable_ecc_force_par_wr_rmw(adev, false);
-		} else
-			DRM_INFO("ECC is active.\n");
-
-		r = amdgpu_atomfirmware_sram_ecc_supported(adev);
-		if (!r)
-			DRM_INFO("SRAM ECC is not present.\n");
-		else
-			DRM_INFO("SRAM ECC is active.\n");
+		}
 	}
 
 	if (adev->mmhub.funcs && adev->mmhub.funcs->reset_ras_error_count)
-- 
2.17.1