drm/amd/display: make sure BL off to mainlink off has enough time

Signed-off-by: NCharlene Liu <charlene.liu@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c

@@ -819,13 +819,6 @@ void hwss_blacklight_control(
 		return;
 	}
 
-	if (!enable && !is_panel_backlight_on(hws)) {
-		dm_logger_write(ctx->logger, LOG_HW_RESUME_S3,
-				"%s: panel already powered down. Do nothing.\n",
-				__func__);
-		return;
-	}
-
 	/* Send VBIOS command to control eDP panel backlight */
 
 	dm_logger_write(ctx->logger, LOG_HW_RESUME_S3,