Tony Lindgren b0cb7f6099 PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend ... commit bed570307e upstream. I noticed some wakeirq flakeyness with consumer drivers not using autosuspend. For drivers not using autosuspend, the wakeirq may never get unmasked in rpm_suspend() because of irq desc->depth. We are configuring dedicated wakeirqs to start with IRQ_NOAUTOEN as we naturally don't want them running until rpm_suspend() is called. However, when a consumer driver initially calls pm_runtime_get(), we now wrongly start with disable_irq_nosync() call on the dedicated wakeirq that is disabled to start with. This causes desc->depth to toggle between 1 and 2 instead of the usual 0 and 1. This can prevent enable_irq() from unmasking the wakeirq as that only happens at desc->depth 1. This does not necessarily show up with drivers using autosuspend as there is time for disable_irq_nosync() before rpm_suspend() gets called after the autosuspend timeout. Let's fix the issue by adding wirq->status that lazily gets set on the first rpm_suspend(). We also need PM runtime core private functions for dev_pm_enable_wake_irq_check() and dev_pm_disable_wake_irq_check() so we can enable the dedicated wakeirq on the first rpm_suspend(). While at it, let's also fix the comments for dev_pm_enable_wake_irq() and dev_pm_disable_wake_irq(). Those can still be used by the consumer drivers as needed because the IRQ core manages the interrupt usecount for us. Fixes: 4990d4fe32 (PM / Wakeirq: Add automated device wake IRQ handling) Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-01-12 11:22:49 +01:00
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opp	PM / OPP: Initialize u_volt_min/max to a valid value	2016-05-04 14:48:51 -07:00
clock_ops.c	ARM: SoC driver updates for v4.4	2015-11-10 15:00:03 -08:00
common.c	PM: Convert dev_pm_put_subsys_data() into a void function	2015-02-03 22:59:25 +01:00
domain.c	PM / Domains: Fix removal of a subdomain	2016-05-04 14:48:51 -07:00
domain_governor.c	PM / Domains: Validate cases of a non-bound driver in genpd governor	2015-12-02 15:21:21 +01:00
generic_ops.c	PM / PCI / ACPI: Kick devices that might have been reset by firmware	2015-10-14 02:17:34 +02:00
main.c	PM / sleep: don't suspend parent when async child suspend_{noirq, late} fails	2016-11-26 09:54:53 +01:00
Makefile	PM / OPP: Move opp core to its own directory	2015-09-15 02:03:16 +02:00
power.h	PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend	2017-01-12 11:22:49 +01:00
qos.c	PM / QoS: Make it possible to expose device latency tolerance to userspace	2015-07-28 08:50:41 +01:00
runtime.c	PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend	2017-01-12 11:22:49 +01:00
sysfs.c	PM / QoS: Make it possible to expose device latency tolerance to userspace	2015-07-28 08:50:41 +01:00
trace.c	PM / sleep: add pm-trace support for suspending phase	2015-03-18 15:54:27 +01:00
wakeirq.c	PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend	2017-01-12 11:22:49 +01:00
wakeup.c	PM / wakeup: wakeup_source_create: use kstrdup_const	2015-09-25 02:30:50 +02:00