Messages in this thread Patch in this message | | | From | Boris Brezillon <> | Subject | [PATCH v2 5/6] watchdog: at91sam9: request the irq with IRQF_NO_SUSPEND | Date | Mon, 2 Mar 2015 10:18:17 +0100 |
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The watchdog interrupt (only used when activating software watchdog) shouldn't be suspended when entering suspend mode, because it is shared with a timer device (which request the line with IRQF_NO_SUSPEND) and once the watchdog "Mode Register" has been written, it cannot be changed (which means we cannot disable the watchdog interrupt when entering suspend).
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> --- drivers/watchdog/at91sam9_wdt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/watchdog/at91sam9_wdt.c b/drivers/watchdog/at91sam9_wdt.c index 6df9405..1443b3c 100644 --- a/drivers/watchdog/at91sam9_wdt.c +++ b/drivers/watchdog/at91sam9_wdt.c @@ -208,7 +208,8 @@ static int at91_wdt_init(struct platform_device *pdev, struct at91wdt *wdt) if ((tmp & AT91_WDT_WDFIEN) && wdt->irq) { err = request_irq(wdt->irq, wdt_interrupt, - IRQF_SHARED | IRQF_IRQPOLL, + IRQF_SHARED | IRQF_IRQPOLL | + IRQF_NO_SUSPEND, pdev->name, wdt); if (err) return err; -- 1.9.1
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