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usb: chipidea: usb2: make clock optional

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Allow clock to be missing from DT (assume it's enabled then).

Signed-off-by: Michał Mirosław <[email protected]>
Signed-off-by: Peter Chen <[email protected]>
This commit is contained in:
Michał Mirosław authored and Peter Chen committed 2020-04-08 09:37:24 +08:00
1 parent 8b93527071
commit c2de37b31f
1 file changed
+9 -9
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drivers/usb/chipidea/ci_hdrc_usb2.c
+9 -9
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@@ -64,13 +64,14 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
if (!priv)
return -ENOMEM;
priv->clk = devm_clk_get(dev, NULL);
if (!IS_ERR(priv->clk)) {
ret = clk_prepare_enable(priv->clk);
if (ret) {
dev_err(dev, "failed to enable the clock: %d\n", ret);
return ret;
}
priv->clk = devm_clk_get_optional(dev, NULL);
if (IS_ERR(priv->clk))
return PTR_ERR(priv->clk);;
ret = clk_prepare_enable(priv->clk);
if (ret) {
dev_err(dev, "failed to enable the clock: %d\n", ret);
return ret;
}
ci_pdata->name = dev_name(dev);
@@ -94,8 +95,7 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
return 0;
clk_err:
if (!IS_ERR(priv->clk))
clk_disable_unprepare(priv->clk);
clk_disable_unprepare(priv->clk);
return ret;
}