[PATCH v3 2/4] drm/i915/display: Avoid unnecessarily calling intel_cx0_get_owned_lane_mask

Jouni Högander jouni.hogander at intel.com
Tue Jul 22 12:56:16 UTC 2025


Currently we are always calling intel_cx0_get_owned_lane_mask when
intel_lnl_mac_transmit_lfps is called. Avoid this in cases where it's not
needed.

Signed-off-by: Jouni Högander <jouni.hogander at intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa at intel.com>
---
 drivers/gpu/drm/i915/display/intel_cx0_phy.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index 2b0305bb04cd..2993dabdbee6 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -3239,13 +3239,14 @@ void intel_lnl_mac_transmit_lfps(struct intel_encoder *encoder,
 				 const struct intel_crtc_state *crtc_state)
 {
 	struct intel_display *display = to_intel_display(encoder);
-	u8 owned_lane_mask = intel_cx0_get_owned_lane_mask(encoder);
 	int i;
+	u8 owned_lane_mask;
 
 	if (DISPLAY_VER(display) < 20 ||
 	    !intel_alpm_is_alpm_aux_less(enc_to_intel_dp(encoder), crtc_state))
 		return;
 
+	owned_lane_mask = intel_cx0_get_owned_lane_mask(encoder);
 	for (i = 0; i < 4; i++) {
 		int tx = i % 2 + 1;
 		u8 lane_mask = i < 2 ? INTEL_CX0_LANE0 : INTEL_CX0_LANE1;
-- 
2.43.0



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