From 4613aa66e42ba1b0c896495a207b3b26e94e44d5 Mon Sep 17 00:00:00 2001 From: Imre Deak Date: Mon, 8 Jul 2024 22:00:26 +0300 Subject: [PATCH] drm/i915/dp: Reset cached LTTPR count if number of LTTPRs is unsupported MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit After detection the cached LTTPR count can be checked to determine if LTTPRs in non-transparent mode were detected. Reset the cached LTTPR count if the reported number of LTTPRs is invalid to ensure the above checks work as expected. Reviewed-by: Ville Syrjälä Reviewed-by: Ankit Nautiyal Signed-off-by: Imre Deak Link: https://patchwork.freedesktop.org/patch/msgid/20240708190029.271247-4-imre.deak@intel.com --- drivers/gpu/drm/i915/display/intel_dp_link_training.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index d044c8e36bb3..56b9c5cb1254 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -174,7 +174,7 @@ static int intel_dp_init_lttpr_phys(struct intel_dp *intel_dp, const u8 dpcd[DP_ * still taking into account any LTTPR common lane- rate/count limits. */ if (lttpr_count < 0) - return 0; + goto out_reset_lttpr_count; if (!intel_dp_set_lttpr_transparent_mode(intel_dp, false)) { lt_dbg(intel_dp, DP_PHY_DPRX, -- 2.50.1