[PATCH] drm/i915/ltphy: Return true for TBT scenario during lt_phy_state compare

[Suraj Kandpal <suraj.kandpal@intel.com>]

TBT PHY is enablement/disablement is handled by its own TBT module.
We do not play a big part in it's state management that being take care
by it's own TBT modeule. With that in mind comparing the state would be
wrong since we really don't touch it.
Simple return true when we are in tbt mode.

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
---
 drivers/gpu/drm/i915/display/intel_lt_phy.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_lt_phy.c b/drivers/gpu/drm/i915/display/intel_lt_phy.c
index 04f63bdd0b87..27ad8407606b 100644
--- a/drivers/gpu/drm/i915/display/intel_lt_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_lt_phy.c
@@ -2158,6 +2158,9 @@ bool
 intel_lt_phy_pll_compare_hw_state(const struct intel_lt_phy_pll_state *a,
 				  const struct intel_lt_phy_pll_state *b)
 {
+	if (a->tbt_mode || b->tbt_mode)
+		return true;
+
 	/*
 	 * With LT PHY values other than VDR0_CONFIG and VDR2_CONFIG are
 	 * unreliable. They cannot always be read back since internally
-- 
2.34.1