From c173a91b760844074abcd636eda47d3b2c107a64 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Thu, 16 Mar 2023 15:17:18 +0200 Subject: [PATCH] drm/i915/tc: Fix TC mode for a legacy port if the PHY is not ready MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit A legacy TC port can't be switched to TBT mode, even if the PHY initialization wasn't ready yet for some reason, so prevent this. This shouldn't normally happen as the driver waits for the IOM/TCSS PHY initialization during driver loading and system resume. Signed-off-by: Imre Deak Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20230316131724.359612-9-imre.deak@intel.com --- drivers/gpu/drm/i915/display/intel_tc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_tc.c b/drivers/gpu/drm/i915/display/intel_tc.c index e39c8a8..f661294 100644 --- a/drivers/gpu/drm/i915/display/intel_tc.c +++ b/drivers/gpu/drm/i915/display/intel_tc.c @@ -482,7 +482,8 @@ static void icl_tc_phy_connect(struct intel_digital_port *dig_port, u32 live_status_mask; int max_lanes; - if (!tc_phy_status_complete(dig_port)) { + if (!tc_phy_status_complete(dig_port) && + !drm_WARN_ON(&i915->drm, dig_port->tc_legacy_port)) { drm_dbg_kms(&i915->drm, "Port %s: PHY not ready\n", dig_port->tc_port_name); goto out_set_tbt_alt_mode; -- 2.7.4