phy: phy-mtk-tphy: get optional clock by devm_clk_get_optional()

Use devm_clk_get_optional() to get optional clock

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
index 5b6a470..cb2ed3b 100644 (file)
--- a/drivers/phy/mediatek/phy-mtk-tphy.c
+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
@@ -1103,13 +1103,9 @@ static int mtk_tphy_probe(struct platform_device *pdev)
        }
 
        /* it's deprecated, make it optional for backward compatibility */
-       tphy->u3phya_ref = devm_clk_get(dev, "u3phya_ref");
-       if (IS_ERR(tphy->u3phya_ref)) {
-               if (PTR_ERR(tphy->u3phya_ref) == -EPROBE_DEFER)
-                       return -EPROBE_DEFER;
-
-               tphy->u3phya_ref = NULL;
-       }
+       tphy->u3phya_ref = devm_clk_get_optional(dev, "u3phya_ref");
+       if (IS_ERR(tphy->u3phya_ref))
+               return PTR_ERR(tphy->u3phya_ref);
 
        tphy->src_ref_clk = U3P_REF_CLK;
        tphy->src_coef = U3P_SLEW_RATE_COEF;