On Tue, Jan 21, 2014 at 06:31:02AM -0800, Guenter Roeck wrote: > On 01/21/2014 05:26 AM, Ezequiel Garcia wrote: > > DT-enabled where an irqchip driver for the brigde interrupt controller is > > available can handle the watchdog IRQ properly. Therefore, we request > > the interruption and add a dummy handler that merely calls panic(). > > > > This is done in order to have an initial 'ack' of the interruption, > > which clears the watchdog state. > > > > Furthermore, since some platforms don't have such IRQ, this commit > > makes the interruption specification optional. > > > > Signed-off-by: Ezequiel Garcia <ezequiel.garcia@xxxxxxxxxxxxxxxxxx> > > --- > > .../devicetree/bindings/watchdog/marvel.txt | 2 ++ > > drivers/watchdog/orion_wdt.c | 22 +++++++++++++++++++++- > > 2 files changed, 23 insertions(+), 1 deletion(-) > > > > [ ... ] > > > static int orion_wdt_probe(struct platform_device *pdev) > > { > > struct resource *res; > > - int ret; > > + int ret, irq; > > > > clk = devm_clk_get(&pdev->dev, NULL); > > if (IS_ERR(clk)) { > > @@ -131,6 +138,19 @@ static int orion_wdt_probe(struct platform_device *pdev) > > if (!wdt_reg) > > return -ENOMEM; > > > > + irq = platform_get_irq(pdev, 0); > > + if (irq > 0) { > > 0 is a valid interrupt number, and platform_get_irq returns an error code on errors. > Should be >= 0. > Yes, indeed. I'll wait to see if there's any other feedback and then send a v4. Thanks a lot! -- Ezequiel García, Free Electrons Embedded Linux, Kernel and Android Engineering http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html