From: James Zhu <James.Zhu@amd.com>
Date: Mon, 10 Sep 2018 16:53:25 +0000 (-0400)
Subject: drm/amdgpu:Add error message when register failed to reach expected value
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=52e211c1f04f7544bf3d3cf5ed3939708d5988d2;p=openwrt%2Fstaging%2Fblogic.git

drm/amdgpu:Add error message when register failed to reach expected value

Add error message when register failed to reach expected value, It will
help discover potential issue.

Signed-off-by: James Zhu <James.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/soc15_common.h b/drivers/gpu/drm/amd/amdgpu/soc15_common.h
index 0942f492d2e1..f5d602540673 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15_common.h
+++ b/drivers/gpu/drm/amd/amdgpu/soc15_common.h
@@ -56,6 +56,8 @@
 			tmp_ = RREG32(adev->reg_offset[ip##_HWIP][inst][reg##_BASE_IDX] + reg); \
 			loop--;					\
 			if (!loop) {				\
+				DRM_ERROR("Register(%d) [%s] failed to reach value 0x%08x != 0x%08x\n", \
+							inst, #reg, expected_value, (tmp_ & (mask))); \
 				ret = -ETIMEDOUT;		\
 				break;				\
 			}					\