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Subject[PATCH 1/5] usb: xhci-mtk: get optional clock by devm_clk_get_optional()
Date
Use devm_clk_get_optional() to get optional clock

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
drivers/usb/host/xhci-mtk.c | 19 +++----------------
1 file changed, 3 insertions(+), 16 deletions(-)

diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
index 60987c787e44..026fe18972d3 100644
--- a/drivers/usb/host/xhci-mtk.c
+++ b/drivers/usb/host/xhci-mtk.c
@@ -206,19 +206,6 @@ static int xhci_mtk_ssusb_config(struct xhci_hcd_mtk *mtk)
return xhci_mtk_host_enable(mtk);
}

-/* ignore the error if the clock does not exist */
-static struct clk *optional_clk_get(struct device *dev, const char *id)
-{
- struct clk *opt_clk;
-
- opt_clk = devm_clk_get(dev, id);
- /* ignore error number except EPROBE_DEFER */
- if (IS_ERR(opt_clk) && (PTR_ERR(opt_clk) != -EPROBE_DEFER))
- opt_clk = NULL;
-
- return opt_clk;
-}
-
static int xhci_mtk_clks_get(struct xhci_hcd_mtk *mtk)
{
struct device *dev = mtk->dev;
@@ -229,15 +216,15 @@ static int xhci_mtk_clks_get(struct xhci_hcd_mtk *mtk)
return PTR_ERR(mtk->sys_clk);
}

- mtk->ref_clk = optional_clk_get(dev, "ref_ck");
+ mtk->ref_clk = devm_clk_get_optional(dev, "ref_ck");
if (IS_ERR(mtk->ref_clk))
return PTR_ERR(mtk->ref_clk);

- mtk->mcu_clk = optional_clk_get(dev, "mcu_ck");
+ mtk->mcu_clk = devm_clk_get_optional(dev, "mcu_ck");
if (IS_ERR(mtk->mcu_clk))
return PTR_ERR(mtk->mcu_clk);

- mtk->dma_clk = optional_clk_get(dev, "dma_ck");
+ mtk->dma_clk = devm_clk_get_optional(dev, "dma_ck");
return PTR_ERR_OR_ZERO(mtk->dma_clk);
}

--
2.20.1
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