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rtc: pl031: make interrupt optional

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On some platforms, the interrupt for the PL031 is optional.  Avoid
trying to claim the interrupt if it's not specified.

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
This commit is contained in:
Russell King 2017-09-29 11:22:15 +01:00 committed by Alexandre Belloni
parent b86f581f8c
commit 5b64a2965d
1 changed files with 8 additions and 6 deletions
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14
drivers/rtc/rtc-pl031.c
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@ -308,7 +308,8 @@ static int pl031_remove(struct amba_device *adev)
dev_pm_clear_wake_irq(&adev->dev);
device_init_wakeup(&adev->dev, false);
free_irq(adev->irq[0], ldata);
if (adev->irq[0])
free_irq(adev->irq[0], ldata);
rtc_device_unregister(ldata->rtc);
amba_release_regions(adev);
@ -389,12 +390,13 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
goto out;
}
if (request_irq(adev->irq[0], pl031_interrupt,
vendor->irqflags, "rtc-pl031", ldata)) {
ret = -EIO;
goto out_no_irq;
if (adev->irq[0]) {
ret = request_irq(adev->irq[0], pl031_interrupt,
vendor->irqflags, "rtc-pl031", ldata);
if (ret)
goto out_no_irq;
dev_pm_set_wake_irq(&adev->dev, adev->irq[0]);
}
dev_pm_set_wake_irq(&adev->dev, adev->irq[0]);
return 0;
out_no_irq: