From 5b64a2965dfdfca8039e93303c64e2b15c19ff0c Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@armlinux.org.uk>
Date: Fri, 29 Sep 2017 11:22:15 +0100
Subject: [PATCH] rtc: pl031: make interrupt optional
Git-commit: 5b64a2965dfdfca8039e93303c64e2b15c19ff0c
Patch-mainline: v4.15-rc1
References: bsc#1051510
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/rtc/rtc-pl031.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -308,7 +308,8 @@ static int pl031_remove(struct amba_devi
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);
iounmap(ldata->base);
kfree(ldata);
@@ -381,12 +382,13 @@ static int pl031_probe(struct amba_devic
goto out_no_rtc;
}
- 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: