On Tue, Feb 10, 2015 at 08:48:36PM +0000, Mark Rutland wrote: > From f390ccbb31f06efee49b4469943c8d85d963bfb5 Mon Sep 17 00:00:00 2001 > From: Mark Rutland <mark.rutland@xxxxxxx> > Date: Tue, 10 Feb 2015 20:14:33 +0000 > Subject: [PATCH] genirq: allow mixed IRQF_NO_SUSPEND requests > > In some cases a physical IRQ line may be shared between devices from > which we expect interrupts during suspend (e.g. timers) and those we do > not (e.g. anything we cut the power to). Where a driver did not request > the interrupt with IRQF_NO_SUSPEND, it's unlikely that it can handle > being called during suspend, and it may bring down the system. > > This patch adds logic to automatically mark the irqactions for these > potentially unsafe handlers as disabled during suspend, leaving actions > with IRQF_NO_SUSPEND enabled. If an interrupt is raised on a shared line > during suspend, only the handlers requested with IRQF_NO_SUSPEND will be > called. The handlers requested without IRQF_NO_SUSPEND will be skipped > as if they had immediately returned IRQF_NONE. > > Cc: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> > Cc: Jason Cooper <jason@xxxxxxxxxxxxxx> > Cc: Nicolas Ferre <nicolas.ferre@xxxxxxxxx> > Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> > Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > Signed-off-by: Mark Rutland <mark.rutland@xxxxxxx> Aw gawd.. not that again. So Rafael and tglx went over this a few months ago I think: lkml.kernel.org/r/26580319.OZP7jvJnA9@xxxxxxxxxxxxxx is the last series I could find. Maybe Rafael can summarize? -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
