On Thu, Aug 10, 2023 at 10:27 AM wenhua lin <wenhua.lin1994@xxxxxxxxx> wrote: > On Tue, Aug 8, 2023 at 9:25 PM Andy Shevchenko <andy@xxxxxxxxxx> wrote: > > On Tue, Aug 08, 2023 at 11:31:44AM +0800, Wenhua Lin wrote: > > > Clear interrupt after set the interrupt type. > > > > Why? > > > > Can't it be done in the ->init_hw() callback of GPIO IRQ chip? > > Hi Andy: > The initialization state of EIC is high-level trigger. If the external > level is high and the interrupt condition is met, > EIC has a latch function. If the module registers the eic interrupt, > an interrupt will be generated immediately > as soon as the eic interrupt is enabled. To solve this problem, our > processing method is to clear the interrupt > once when setting the interrupt trigger type, in order to avoid that > this interrupt is the last interrupt. Obvious question, isn't this needed to be added to ->init_hw() as well? -- With Best Regards, Andy Shevchenko
