From: Rafael J. Wysocki Date: Thu, 10 Jul 2014 21:37:54 +0000 (+0200) Subject: PM / sleep / irq: Do not suspend wakeup interrupts X-Git-Tag: omap-for-v3.17/fixes-against-rc2~153^2~4 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d709f7bcbb3ab01704fa7b37a2e4b981cf3783c1;p=pandora-kernel.git PM / sleep / irq: Do not suspend wakeup interrupts If an IRQ has been configured for wakeup via enable_irq_wake(), the driver who has done that must be prepared for receiving interrupts after suspend_device_irqs() has returned, so there is no need to "suspend" such IRQs. Moreover, if drivers using enable_irq_wake() actually want to receive interrupts after suspend_device_irqs() has returned, they need to add IRQF_NO_SUSPEND to the IRQ flags while requesting the IRQs, which shouldn't be necessary (it also goes a bit too far, as IRQF_NO_SUSPEND causes the IRQ to be ignored by suspend_device_irqs() all the time regardless of whether or not it has been configured for signaling wakeup). For the above reasons, make __disable_irq() ignore IRQ descriptors with IRQD_WAKEUP_STATE set when its suspend argument is true which effectively causes them to behave like IRQs with IRQF_NO_SUSPEND set. This also allows IRQs configured for wakeup via enable_irq_wake() to work as wakeup interrupts for the "freeze" (suspend-to-idle) sleep mode automatically just like for any other sleep states. Signed-off-by: Rafael J. Wysocki Cc: Li Aubrey Cc: Dmitry Torokhov Cc: One Thousand Gnomes Link: http://lkml.kernel.org/r/4679574.kGUnqAuNl9@vostro.rjw.lan Signed-off-by: Thomas Gleixner --- Reading git-diff-tree failed