Am 01.12.2014 um 15:08 schrieb Linus Walleij: > On Mon, Dec 1, 2014 at 11:59 AM, Richard Weinberger <richard@xxxxxx> wrote: >> Am 01.12.2014 um 11:49 schrieb Harald Geyer: > >>> Any input from gpiolib people about what the proper fix would be in >>> their opinion, of course is appreciated. I don't think the dht11 driver >>> is doing anything unreasonable per se, so maybe they can clarify how >>> the API is intended to be used? >> >> Your driver sets up a GPIO as IRQ and then you switch the mode to output >> to enable the DHT sensor. >> This is not an API issue, it is an design issue. >> I'm not a hardware expert but AFAIK setting an IRQ pin into output mode can >> lead to undefined behavior. > > Well that check is there exactly to prevent madness like this. > > IRQs on pins set to output *does* *not* *make* *sense*. > > Remove the IRQ before setting the pin to output and vice > versa and everyone will be happier. Thanks for the confirmation. I'll cook up a patch. Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
