drm/radeon: use drm_mode_vrefresh() rather than mode->vrefresh

Just in case it hasn't been calculated for the mode.

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

diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c
index 843b65f46ece168a8694a8a86a974befda12290b..fa2154493cf1537dee269149b1924468a6035325 100644 (file)
--- a/drivers/gpu/drm/radeon/r600_dpm.c
+++ b/drivers/gpu/drm/radeon/r600_dpm.c
@@ -188,7 +188,7 @@ u32 r600_dpm_get_vrefresh(struct radeon_device *rdev)
                list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
                        radeon_crtc = to_radeon_crtc(crtc);
                        if (crtc->enabled && radeon_crtc->enabled && radeon_crtc->hw_mode.clock) {
-                               vrefresh = radeon_crtc->hw_mode.vrefresh;
+                               vrefresh = drm_mode_vrefresh(&radeon_crtc->hw_mode);
                                break;
                        }
                }