From de8d1810fda5463ee60ba2937ca68e55a52bd9e7 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Fri, 22 May 2015 09:58:49 +0200 Subject: [PATCH] genirq: Set IRQCHIP_SKIP_SET_WAKE for no_irq_chip If no_irq_chip is used for wake up (e.g. gpio-keys with a simple GPIO controller), the following warning is printed on resume from s2ram: WANING: CPU: 0 PID: 1046 at kernel/irq/manage.c:537 irq_set_irq_wake+0x9c/0xf8() Unbalanced IRQ 113 wake disable This happens because no_irq_chip does not implement irq_chip.irq_set_wake(), causing set_irq_wake_real() to return -ENXIO, and irq_set_irq_wake() to reset the wake_depth to zero. Set IRQCHIP_SKIP_SET_WAKE to indicate that irq_chip.irq_set_wake() is not implemented. Cfr. commit 10a50f1ab5f06c9a ("genirq: Set IRQCHIP_SKIP_SET_WAKE flag for dummy_irq_chip"). Signed-off-by: Geert Uytterhoeven Cc: Roger Quadros Cc: Gregory Clement Link: http://lkml.kernel.org/r/1432281529-23325-1-git-send-email-geert%2Brenesas@glider.be Signed-off-by: Thomas Gleixner --- kernel/irq/dummychip.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/irq/dummychip.c b/kernel/irq/dummychip.c index 988dc58e8847..6a5419308c54 100644 --- a/kernel/irq/dummychip.c +++ b/kernel/irq/dummychip.c @@ -42,6 +42,7 @@ struct irq_chip no_irq_chip = { .irq_enable = noop, .irq_disable = noop, .irq_ack = ack_bad, + .flags = IRQCHIP_SKIP_SET_WAKE, }; /* -- 2.20.1