commit 7848865914c6a63ead674f0f5604b77df7d3874f
author Alex Deucher <alexander.deucher@amd.com> Tue Mar 11 15:02:30 2014 -0400
committer Alex Deucher <alexander.deucher@amd.com> Wed Mar 12 15:53:23 2014 -0400
tree 2e4c2661f27846647159d44c6ea9aa890431de53
parent 45db98e54242f3ae94bdcfbfe754e743252eb168

drm/radeon: fix runpm disabling on non-PX harder

Make sure runtime pm is disabled on non-PX hardware.
Should fix powerdown problems without displays attached.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

drivers/gpu/drm/radeon/radeon_kms.c

diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
index 2aecd6d..66ed3ea 100644
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -33,6 +33,13 @@
 #include <linux/vga_switcheroo.h>
 #include <linux/slab.h>
 #include <linux/pm_runtime.h>
+
+#if defined(CONFIG_VGA_SWITCHEROO)
+bool radeon_is_px(void);
+#else
+static inline bool radeon_is_px(void) { return false; }
+#endif
+
 /**
  * radeon_driver_unload_kms - Main unload function for KMS.
  *
@@ -130,7 +137,8 @@
 				"Error during ACPI methods call\n");
 	}
 
-	if (radeon_runtime_pm != 0) {
+	if ((radeon_runtime_pm == 1) ||
+	    ((radeon_runtime_pm == -1) && radeon_is_px())) {
 		pm_runtime_use_autosuspend(dev->dev);
 		pm_runtime_set_autosuspend_delay(dev->dev, 5000);
 		pm_runtime_set_active(dev->dev);