[PATCH] drm/radeon: don't share plls if monitors differ in audio support

[Alex Deucher]

Enabling audio may enable different pll dividers.  Don't share
plls if the monitors differ in audio support.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=98751

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: stable at vger.kernel.org
---
 drivers/gpu/drm/radeon/atombios_crtc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 42b2ea3..e597ffc 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -1798,7 +1798,9 @@ static int radeon_get_shared_nondp_ppll(struct drm_crtc *crtc)
 			if ((crtc->mode.clock == test_crtc->mode.clock) &&
 			    (adjusted_clock == test_adjusted_clock) &&
 			    (radeon_crtc->ss_enabled == test_radeon_crtc->ss_enabled) &&
-			    (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID))
+			    (test_radeon_crtc->pll_id != ATOM_PPLL_INVALID) &&
+			    (drm_detect_monitor_audio(radeon_connector_edid(test_radeon_crtc->connector)) ==
+			     drm_detect_monitor_audio(radeon_connector_edid(radeon_crtc->connector))))
 				return test_radeon_crtc->pll_id;
 		}
 	}
-- 
1.8.3.1