On Tue, May 24, 2016 at 07:40:51AM -0700, Peter Hurley wrote: > On 05/24/2016 01:09 AM, Uwe Kleine-König wrote: > > On Mon, May 23, 2016 at 11:02:53AM -0700, Peter Hurley wrote: > >> On 05/23/2016 02:09 AM, Uwe Kleine-König wrote: > >> However, note that it's not really possible to recover here by polling; > >> some of the gpios may have been claimed and some not when the irq > >> claim failure occurs. > >> How to know which gpios were claimed? > > > > I don't understand this. You cannot recover if a GPIO is used by a > > different driver/device. If a given GPIO doesn't support triggering an > > irq, polling can help, it must of course be implemented correctly. > > And if gpio_mctrl implements this (which is the right thing to do, as it > > is independant from the actual driver) all necessary knowledge is there. > > Ah, sorry. > > I thought the both the code comment and your review comment above > about "polling must be set up" implied the caller could do something > about that, which obviously the caller can't. ack. Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
