add dpm_set_power_state failure output (7xx-ni)

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c
index 0cbf75e..bab0185 100644
--- a/drivers/gpu/drm/radeon/btc_dpm.c
+++ b/drivers/gpu/drm/radeon/btc_dpm.c
@@ -2329,8 +2329,10 @@
 #if 0
 	/* XXX */
 	ret = rv770_unrestrict_performance_levels_after_switch(rdev);
-	if (ret)
+	if (ret) {
+		DRM_ERROR("rv770_unrestrict_performance_levels_after_switch failed\n");
 		return ret;
+	}
 #endif
 
 	return 0;
diff --git a/drivers/gpu/drm/radeon/cypress_dpm.c b/drivers/gpu/drm/radeon/cypress_dpm.c
index 0097ff7..5ada922 100644
--- a/drivers/gpu/drm/radeon/cypress_dpm.c
+++ b/drivers/gpu/drm/radeon/cypress_dpm.c
@@ -2015,8 +2015,10 @@
 		cypress_notify_link_speed_change_after_state_change(rdev, new_ps, old_ps);
 
 	ret = rv770_unrestrict_performance_levels_after_switch(rdev);
-	if (ret)
+	if (ret) {
+		DRM_ERROR("rv770_unrestrict_performance_levels_after_switch failed\n");
 		return ret;
+	}
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c
index a1f1286..ebde8d0 100644
--- a/drivers/gpu/drm/radeon/ni_dpm.c
+++ b/drivers/gpu/drm/radeon/ni_dpm.c
@@ -3795,8 +3795,10 @@
 #if 0
 	/* XXX */
 	ret = ni_unrestrict_performance_levels_after_switch(rdev);
-	if (ret)
+	if (ret) {
+		DRM_ERROR("ni_unrestrict_performance_levels_after_switch failed\n");
 		return ret;
+	}
 #endif
 
 	return 0;
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index d7954e4..e2d2619 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2047,8 +2047,10 @@
 		rv770_program_dcodt_after_state_switch(rdev, new_ps, old_ps);
 	rv770_set_uvd_clock_after_set_eng_clock(rdev, new_ps, old_ps);
 	ret = rv770_unrestrict_performance_levels_after_switch(rdev);
-	if (ret)
+	if (ret) {
+		DRM_ERROR("rv770_unrestrict_performance_levels_after_switch failed\n");
 		return ret;
+	}
 
 	return 0;
 }