The BIOS can leave the AUX power well enabled on an output, even if this isn't required (on platforms where the AUX power is only needed for an AUX access). This was observed at least on PTL. To avoid the WARN which would be triggered by this during the HW readout, convert the WARN to a debug message.
Cc: stable@vger.kernel.org # v6.8+ Reported-by: Charlton Lin charlton.lin@intel.com Tested-by: Khaled Almahallawy khaled.almahallawy@intel.com Reviewed-by: Mika Kahola mika.kahola@intel.com Signed-off-by: Imre Deak imre.deak@intel.com --- drivers/gpu/drm/i915/display/intel_tc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c index 8b6826fc06855..0ff5a8951e734 100644 --- a/drivers/gpu/drm/i915/display/intel_tc.c +++ b/drivers/gpu/drm/i915/display/intel_tc.c @@ -1497,11 +1497,11 @@ static void intel_tc_port_reset_mode(struct intel_tc_port *tc, intel_display_power_flush_work(display); if (!intel_tc_cold_requires_aux_pw(dig_port)) { enum intel_display_power_domain aux_domain; - bool aux_powered;
aux_domain = intel_aux_power_domain(dig_port); - aux_powered = intel_display_power_is_enabled(display, aux_domain); - drm_WARN_ON(display->drm, aux_powered); + if (intel_display_power_is_enabled(display, aux_domain)) + drm_dbg_kms(display->drm, "Port %s: AUX unexpectedly powered\n", + tc->port_name); }
tc_phy_disconnect(tc);