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usb: dwc2: get optional clock by devm_clk_get_optional()

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When the driver tries to get optional clock, it ignores all errors,
but if only ignores -ENOENT, it will cover some real errors, such as
-EPROBE_DEFER, so use devm_clk_get_optional() to get optional clock.

Cc: Minas Harutyunyan <[email protected]>
Signed-off-by: Chunfeng Yun <[email protected]>
Acked-by: Minas Harutyunyan <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
This commit is contained in:
Chunfeng Yun authored and Felipe Balbi committed 2019-05-03 09:13:47 +03:00
1 parent 466375657d
commit 60722c4eef
1 file changed
+3 -3
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drivers/usb/dwc2/platform.c
+3 -3
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@@ -284,10 +284,10 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg)
}
/* Clock */
hsotg->clk = devm_clk_get(hsotg->dev, "otg");
hsotg->clk = devm_clk_get_optional(hsotg->dev, "otg");
if (IS_ERR(hsotg->clk)) {
hsotg->clk = NULL;
dev_dbg(hsotg->dev, "cannot get otg clock\n");
dev_err(hsotg->dev, "cannot get otg clock\n");
return PTR_ERR(hsotg->clk);
}
/* Regulators */