disp: msm: dsi: add return code to probe deferral error logs

This change adds return code -EPROBE_DEFER to DSI error logs during
a probe deferral.

Change-Id: I59971ebc319e90d65f64e73149e34ba691441741
Signed-off-by: Satya Rama Aditya Pinapala <[email protected]>

msm/dsi/dsi_ctrl.c

@@ -1991,7 +1991,8 @@ struct dsi_ctrl *dsi_ctrl_get(struct device_node *of_node)
 	mutex_unlock(&dsi_ctrl_list_lock);
 
 	if (!ctrl) {
-		DSI_CTRL_ERR(ctrl, "Device with of node not found\n");
+		DSI_CTRL_ERR(ctrl, "Device with of node not found rc=%d\n",
+				-EPROBE_DEFER);
 		ctrl = ERR_PTR(-EPROBE_DEFER);
 		return ctrl;
 	}

msm/dsi/dsi_panel.c

@@ -481,7 +481,8 @@ static int dsi_panel_wled_register(struct dsi_panel *panel,
 
 	bd = backlight_device_get_by_type(BACKLIGHT_RAW);
 	if (!bd) {
-		DSI_ERR("[%s] fail raw backlight register\n", panel->name);
+		DSI_ERR("[%s] fail raw backlight register rc=%d\n",
+				panel->name, -EPROBE_DEFER);
 		return -EPROBE_DEFER;
 	}
 

msm/dsi/dsi_phy.c

@@ -571,7 +571,8 @@ struct msm_dsi_phy *dsi_phy_get(struct device_node *of_node)
 	mutex_unlock(&dsi_phy_list_lock);
 
 	if (!phy) {
-		DSI_PHY_ERR(phy, "Device with of node not found\n");
+		DSI_PHY_ERR(phy, "Device with of node not found rc=%d\n",
+				-EPROBE_DEFER);
 		phy = ERR_PTR(-EPROBE_DEFER);
 		return phy;
 	}