This reverts commit 
39d4275058baf53e89203407bf3841ff2c74fa32.
This caused a regression on some older hardware.
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=113891
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
 
 
        /* update display watermarks based on new power state */
        radeon_bandwidth_update(rdev);
+       /* update displays */
+       radeon_dpm_display_configuration_changed(rdev);
 
        /* wait for the rings to drain */
        for (i = 0; i < RADEON_NUM_RINGS; i++) {
 
        radeon_dpm_post_set_power_state(rdev);
 
-       /* update displays */
-       radeon_dpm_display_configuration_changed(rdev);
-
        rdev->pm.dpm.current_active_crtcs = rdev->pm.dpm.new_active_crtcs;
        rdev->pm.dpm.current_active_crtc_count = rdev->pm.dpm.new_active_crtc_count;
        rdev->pm.dpm.single_display = single_display;