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usb: chipidea: msm: get optional clock by devm_clk_get_optional() 

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

Cc: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Acked-by: Peter Chen <Peter.Chen@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2019-04-17 16:28:20 +08:00 committed by Greg Kroah-Hartman
parent e894cdc2cb
commit fcafadf71a
1 changed files with 3 additions and 6 deletions
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9
drivers/usb/chipidea/ci_hdrc_msm.c
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@ -205,12 +205,9 @@ static int ci_hdrc_msm_probe(struct platform_device *pdev)
if (IS_ERR(clk))
return PTR_ERR(clk);
ci->fs_clk = clk = devm_clk_get(&pdev->dev, "fs");
if (IS_ERR(clk)) {
if (PTR_ERR(clk) == -EPROBE_DEFER)
return -EPROBE_DEFER;
ci->fs_clk = NULL;
}
ci->fs_clk = clk = devm_clk_get_optional(&pdev->dev, "fs");
if (IS_ERR(clk))
return PTR_ERR(clk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
ci->base = devm_ioremap_resource(&pdev->dev, res);