kernel_optimize_test/drivers/base
Tony Lindgren bed570307e PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend
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>
2016-12-06 23:45:59 +01:00
..
power PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend 2016-12-06 23:45:59 +01:00
regmap Merge remote-tracking branches 'regmap/topic/core' and 'regmap/topic/debugfs' into regmap-next 2016-10-04 05:17:12 +02:00
attribute_container.c attribute_container: Fix typo 2016-08-31 15:13:56 +02:00
base.h PM / sleep: prohibit devices probing during suspend/hibernation 2015-11-30 14:47:22 +01:00
bus.c driver core: bus: use to_subsys_private and to_device_private_bus 2016-02-09 17:25:27 -08:00
cacheinfo.c cpu/cacheinfo: Fix teardown path 2015-09-17 06:06:54 -07:00
class.c class_find_device: fix reference to argument "match" 2015-09-29 15:23:14 +02:00
component.c Merge 4.5-rc4 into driver-core-next 2016-02-14 14:29:55 -08:00
container.c
core.c Driver core patches for 4.9-rc1 2016-10-03 20:03:24 -07:00
cpu.c cpu: clean up register_cpu func 2016-08-31 15:19:55 +02:00
dd.c device core: Remove deprecated create_singlethread_workqueue 2016-09-02 15:08:02 +02:00
devcoredump.c devcoredump: add scatterlist support 2016-04-15 11:20:32 -07:00
devres.c devm: make allocations numa aware by default 2015-10-09 17:00:33 -04:00
devtmpfs.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
dma-coherent.c drivers: dma-coherent: Move spinlock in dma_alloc_from_coherent() 2016-09-28 17:53:16 +02:00
dma-contiguous.c driver core update for 4.4-rc1 2015-11-04 21:50:37 -08:00
dma-mapping.c drivers/base dmam_declare_coherent_memory leaks 2016-08-31 15:19:55 +02:00
driver.c driver core: add missing blank line after declaration 2015-03-25 14:36:30 +01:00
firmware_class.c firmware: support loading into a pre-allocated buffer 2016-08-02 19:35:10 -04:00
firmware.c
hypervisor.c
init.c drivers: of/base: move of_init to driver_init 2015-05-26 19:55:56 -07:00
isa.c isa: Call isa_bus_init before dependent ISA bus drivers register 2016-06-17 20:47:11 -07:00
Kconfig driver core: add test of driver remove calls during probe 2016-08-31 15:13:55 +02:00
Makefile isa: Allow ISA-style drivers on modern systems 2016-06-17 20:21:12 -07:00
map.c drivers: base: map: Use kmalloc_array instead of kmalloc 2015-03-25 14:35:08 +01:00
memory.c memory-hotplug: fix store_mem_state() return value 2016-10-07 18:46:28 -07:00
module.c base: make module_create_drivers_dir race-free 2016-06-15 19:21:31 -07:00
node.c treewide: replace obsolete _refok by __ref 2016-08-02 17:31:41 -04:00
pinctrl.c driver: base: pinctrl: return error from pinctrl_bind_pins() 2016-09-13 23:02:59 +02:00
platform-msi.c genirq/msi: Add cpumask allocation to alloc_msi_entry 2016-09-14 22:11:08 +02:00
platform.c driver-core: platform: Catch errors from calls to irq_get_irq_data 2016-09-27 12:30:37 +02:00
property.c device property: Add function to search for named child of device 2016-06-26 12:39:03 +01:00
soc.c base: soc: make it explicitly non-modular 2016-08-31 15:13:56 +02:00
syscore.c
topology.c topology/sysfs: provide drawer id and siblings attributes 2016-06-13 15:58:27 +02:00
transport_class.c