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From 3a6bb2a44986255a0c79632c0d8b30ebe60efc0b Mon Sep 17 00:00:00 2001
From: James Zhu <James.Zhu@amd.com>
Date: Mon, 10 Sep 2018 12:53:25 -0400
Subject: [PATCH 5406/5725] 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>
---
drivers/gpu/drm/amd/amdgpu/soc15_common.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15_common.h b/drivers/gpu/drm/amd/amdgpu/soc15_common.h
index 0942f49..f5d6025 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; \
} \
--
2.7.4
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