drm/radeon: fix resuming mode in pm runtime resume path

For runtime pm we'd never suspend with the modesetting hw turned on,
so don't try and resume the modesetting hw, as that path will take
locks that the interface that is causing us to wake up might also
take.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 15f954cd81cb..835516d2d257 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1551,10 +1551,12 @@ int radeon_resume_kms(struct drm_device *dev, bool resume, bool fbcon)
         /* reset hpd state */
         radeon_hpd_init(rdev);
         /* blat the mode back in */
-        drm_helper_resume_force_mode(dev);
-        /* turn on display hw */
-        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-                drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+        if (fbcon) {
+                drm_helper_resume_force_mode(dev);
+                /* turn on display hw */
+                list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+                        drm_helper_connector_dpms(connector, DRM_MODE_DPMS_ON);
+                }
         }
 
         drm_kms_helper_poll_enable(dev);