PCI: mediatek: Get optional clocks with devm_clk_get_optional()

Update the driver to use devm_clk_get_optional() to claim
optional clocks instead of devm_clk_get().

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
Acked-by: Honghui Zhang <honghui.zhang@mediatek.com>
Cc: Ryder Lee <ryder.lee@mediatek.com>
Cc: Honghui Zhang <honghui.zhang@mediatek.com>

1 files changed, 15 insertions, 35 deletions

diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c
index 0b6c72804e03..adb6cb15daa2 100644
--- a/drivers/pci/controller/pcie-mediatek.c
+++ b/drivers/pci/controller/pcie-mediatek.c
@@ -915,49 +915,29 @@ 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);
+        if (IS_ERR(port->axi_ck))
+                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);
+        if (IS_ERR(port->aux_ck))
+                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);
+        if (IS_ERR(port->obff_ck))
+                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);
+        if (IS_ERR(port->pipe_ck))
+                return PTR_ERR(port->pipe_ck);
 
         snprintf(name, sizeof(name), "pcie-rst%d", slot);
         port->reset = devm_reset_control_get_optional_exclusive(dev, name);