From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
We shouldn't really trust tc_mode on non-TC PHYs since we never
initialize it explicitly. So let's check for the PHY type first.
Fortunately TC_PORT_TBT_ALT happens to be zero so I don't think
there's an actual bug here, just a possibility for a future one
if someone rearranges the enum values.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index efcdf5499903..5bc5033a2dea 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3463,10 +3463,12 @@ icl_program_mg_dp_mode(struct intel_digital_port *dig_port,
{
struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
enum tc_port tc_port = intel_port_to_tc(dev_priv, dig_port->base.port);
+ enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port);
u32 ln0, ln1, pin_assignment;
u8 width;
- if (dig_port->tc_mode == TC_PORT_TBT_ALT)
+ if (!intel_phy_is_tc(dev_priv, phy) ||
+ dig_port->tc_mode == TC_PORT_TBT_ALT)
return;
if (INTEL_GEN(dev_priv) >= 12) {
--
2.26.2
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