diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2017-09-29 12:22:15 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2017-10-12 16:30:30 +0200 |
| commit | 5b64a2965dfdfca8039e93303c64e2b15c19ff0c (patch) | |
| tree | d4673f18f817d8735c74be9464e550ab24f994c8 /drivers/rtc/rtc-pl031.c | |
| parent | rtc: pl031: avoid exposing alarm if no interrupt (diff) | |
| download | linux-5b64a2965dfdfca8039e93303c64e2b15c19ff0c.tar.xz linux-5b64a2965dfdfca8039e93303c64e2b15c19ff0c.zip | |
rtc: pl031: make interrupt optional
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>
Diffstat (limited to 'drivers/rtc/rtc-pl031.c')
| -rw-r--r-- | drivers/rtc/rtc-pl031.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index 64c77ec1b4ea..82eb7da2c478 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -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: |