Commit 07783397 authored Sep 17, 2013 by John Stultz

rtc: rtc-pl031: Set wakeup flag prior to registering rtcdev



In some recent testing, I noticed the CLOCK_REALTIME_ALARM clockid
wasn't functioning on my vexpress qemu environment. Looking into it
I noticed the pl031 rtc driver doesn't set the wakeup flag on the
device until after registering the device with the RTC subsystem.

This causes the alarmtimer subsystem to not see the pl031 driver
as a valid backing device, and that resuls in alarm clockids
getting ENOTSUPP errors.

Thus be sure to set the wakeup flag on the device prior to
registering the rtcdev so the pl031 rtc driver can be used as
the backing alarmtimer device.

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: "Jon Medhurst (Tixy)" <tixy@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>

parent 233bcb41

drivers/rtc/rtc-pl031.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -371,6 +371,7 @@ static int pl031_probe(struct amba_device adev, const struct amba_id id)
		}
		}

		device_init_wakeup(&adev->dev, 1);
		ldata->rtc = rtc_device_register("pl031", &adev->dev, ops,
		THIS_MODULE);
		if (IS_ERR(ldata->rtc)) {
		@@ -384,8 +385,6 @@ static int pl031_probe(struct amba_device adev, const struct amba_id id)
		goto out_no_irq;
		}

		device_init_wakeup(&adev->dev, 1);

		return 0;

		out_no_irq: