On Wed, Apr 24, 2024 at 3:59 PM Ondřej Jirman <megi@xxxxxx> wrote: > On Wed, Apr 24, 2024 at 02:16:06AM GMT, Andy Shevchenko wrote: > > On Wed, Apr 24, 2024 at 1:41 AM Aren Moynihan <aren@xxxxxxxxxxxxxxxxx> wrote: ... > > > ret = stk3310_init(indio_dev); > > > if (ret < 0) > > > - return ret; > > > + goto err_vdd_disable; > > > > This is wrong. You will have the regulator being disabled _before_ > > IRQ. Note, that the original code likely has a bug which sets states > > before disabling IRQ and removing a handler. > > How so? stk3310_init is called before enabling the interrupt. Exactly, IRQ is registered with devm and hence the error path and remove stages will got it in a wrong order. > Original code has a bug that IRQ is enabled before registering the > IIO device, Indeed, but this is another bug. > so if IRQ is triggered before registration, iio_push_event > from IRQ handler may be called on a not yet registered IIO device. > > Never saw it happen, though. :) Because nobody cares enough to enable DEBUG_SHIRQ. -- With Best Regards, Andy Shevchenko
