6.16-stable review patch. If anyone has any objections, please let me know.
------------------
From: Imre Deak imre.deak@intel.com
commit d7fa5754e83cd36c4327eb2d806064e598a72ff6 upstream.
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 Link: https://lore.kernel.org/r/20250811080152.906216-6-imre.deak@intel.com (cherry picked from commit 6cb52cba474b2bec1a3018d3dbf75292059a29a1) Signed-off-by: Tvrtko Ursulin tursulin@ursulin.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/i915/display/intel_tc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- 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(str 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);