From 95c23e2085f28e2c763ca202fdc37a1392982c16 Mon Sep 17 00:00:00 2001 From: Arun R Murthy Date: Tue, 8 Aug 2023 09:50:00 +0530 Subject: [PATCH] drm/i915/dp: Fix LT debug print in SDP CRC enable The debug print for enabling SDP CRC16 is applicable only for DP2.0, but this debug print was not within the uhbr check and was always printed. Fix this by adding proper checks and returning. v2: Fix typo in commit message (Ankit) Signed-off-by: Arun R Murthy Reviewed-by: Chaitanya Kumar Borah Signed-off-by: Ankit Nautiyal Link: https://patchwork.freedesktop.org/patch/msgid/20230808042000.3210715-1-arun.r.murthy@intel.com --- .../gpu/drm/i915/display/intel_dp_link_training.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) 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 a263773f4d68..4485ef4f8ec6 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -1390,11 +1390,13 @@ void intel_dp_128b132b_sdp_crc16(struct intel_dp *intel_dp, * Default value of bit 31 is '0' hence discarding the write * TODO: Corrective actions on SDP corruption yet to be defined */ - if (intel_dp_is_uhbr(crtc_state)) - /* DP v2.0 SCR on SDP CRC16 for 128b/132b Link Layer */ - drm_dp_dpcd_writeb(&intel_dp->aux, - DP_SDP_ERROR_DETECTION_CONFIGURATION, - DP_SDP_CRC16_128B132B_EN); + if (!intel_dp_is_uhbr(crtc_state)) + return; + + /* DP v2.0 SCR on SDP CRC16 for 128b/132b Link Layer */ + drm_dp_dpcd_writeb(&intel_dp->aux, + DP_SDP_ERROR_DETECTION_CONFIGURATION, + DP_SDP_CRC16_128B132B_EN); lt_dbg(intel_dp, DP_PHY_DPRX, "DP2.0 SDP CRC16 for 128b/132b enabled\n"); }