Please kindly note that I am resending the last email since it did not reach maillist. > Hi, Krzysztof > Thanks for the reply. > > This interrupt is a threaded interrupt. Therefore the > > s3c2410wdt_keepalive() will be called again from process thread. Are you > > sure there is deadlock? > Is it really that s3c2410wdt_irq is a threaded interrupt? I could be wrong but I can > see that the interrupt is registered via the following code. It is the third argument > of devm_request_irq but not devm_request_threaded_irq or request_threaded_irq, > as far as I know, it should be an interrupt handler for the interrupt line wdt_irq > executed under irq context. > ret = devm_request_irq(dev, wdt_irq, s3c2410wdt_irq, 0, pdev->name, pdev); > > Anyway, please also strip unrelated paths and rather use function names, > > not references to lines, because these might be not accurate. > No problem, I will provide a new patch with the function name soon. > Best Regards, > Chengfeng