[PATCH] PCI: mediatek: get optional clock by devm_clk_get_optional()

[Chunfeng Yun]

Use devm_clk_get_optional() to get optional clock

Signed-off-by: Chunfeng Yun <chunfeng....@mediatek.com>
---
 drivers/pci/controller/pcie-mediatek.c | 46 ++++++--------------------
 1 file changed, 11 insertions(+), 35 deletions(-)

diff --git a/drivers/pci/controller/pcie-mediatek.c 
b/drivers/pci/controller/pcie-mediatek.c
index 0b6c72804e03..9a66a018489b 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -915,49 +915,25 @@ static int mtk_pcie_parse_port(struct mtk_pcie *pcie,
 
        /* sys_ck might be divided into the following parts in some chips */
        snprintf(name, sizeof(name), "ahb_ck%d", slot);
-       port->ahb_ck = devm_clk_get(dev, name);
-       if (IS_ERR(port->ahb_ck)) {
-               if (PTR_ERR(port->ahb_ck) == -EPROBE_DEFER)
-                       return -EPROBE_DEFER;
-
-               port->ahb_ck = NULL;
-       }
+       port->ahb_ck = devm_clk_get_optional(dev, name);
+       if (IS_ERR(port->ahb_ck))
+               return PTR_ERR(port->ahb_ck);
 
        snprintf(name, sizeof(name), "axi_ck%d", slot);
-       port->axi_ck = devm_clk_get(dev, name);
-       if (IS_ERR(port->axi_ck)) {
-               if (PTR_ERR(port->axi_ck) == -EPROBE_DEFER)
-                       return -EPROBE_DEFER;
-
-               port->axi_ck = NULL;
-       }
+       port->axi_ck = devm_clk_get_optional(dev, name);
+               return PTR_ERR(port->axi_ck);
 
        snprintf(name, sizeof(name), "aux_ck%d", slot);
-       port->aux_ck = devm_clk_get(dev, name);
-       if (IS_ERR(port->aux_ck)) {
-               if (PTR_ERR(port->aux_ck) == -EPROBE_DEFER)
-                       return -EPROBE_DEFER;
-
-               port->aux_ck = NULL;
-       }
+       port->aux_ck = devm_clk_get_optional(dev, name);
+               return PTR_ERR(port->aux_ck);
 
        snprintf(name, sizeof(name), "obff_ck%d", slot);
-       port->obff_ck = devm_clk_get(dev, name);
-       if (IS_ERR(port->obff_ck)) {
-               if (PTR_ERR(port->obff_ck) == -EPROBE_DEFER)
-                       return -EPROBE_DEFER;
-
-               port->obff_ck = NULL;
-       }
+       port->obff_ck = devm_clk_get_optional(dev, name);
+               return PTR_ERR(port->obff_ck);
 
        snprintf(name, sizeof(name), "pipe_ck%d", slot);
-       port->pipe_ck = devm_clk_get(dev, name);
-       if (IS_ERR(port->pipe_ck)) {
-               if (PTR_ERR(port->pipe_ck) == -EPROBE_DEFER)
-                       return -EPROBE_DEFER;
-
-               port->pipe_ck = NULL;
-       }
+       port->pipe_ck = devm_clk_get_optional(dev, name);
+               return PTR_ERR(port->pipe_ck);
 
        snprintf(name, sizeof(name), "pcie-rst%d", slot);
        port->reset = devm_reset_control_get_optional_exclusive(dev, name);
-- 
2.20.1