[PATCH] drm/radeon: add error output if VM CS fails on cayman

[alexdeuc...@gmail.com]

From: Alex Deucher <alexander.deuc...@amd.com>

So we know why the CS was rejected.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: stable at vger.kernel.org
---
 drivers/gpu/drm/radeon/evergreen_cs.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c 
b/drivers/gpu/drm/radeon/evergreen_cs.c
index 573ed1b..30271b64 100644
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -2829,6 +2829,7 @@ static bool evergreen_vm_reg_valid(u32 reg)
        case CAYMAN_SQ_EX_ALLOC_TABLE_SLOTS:
                return true;
        default:
+               DRM_ERROR("Invalid register 0x%x in CS\n", reg);
                return false;
        }
 }
-- 
1.7.7.5