linux/drivers/base/power
Rafael J. Wysocki 107d47b2b9 PM: sleep: core: Simplify the SMART_SUSPEND flag handling
The code to handle the SMART_SUSPEND driver PM flag is hard to follow
and somewhat inconsistent with respect to devices without middle-layer
(subsystem) callbacks.

Namely, for those devices the core takes the role of a middle layer
in providing the expected ordering of execution of callbacks (under
the assumption that the drivers setting SMART_SUSPEND can reuse their
PM-runtime callbacks directly for system-wide suspend).  To that end,
it prevents driver ->suspend_late and ->suspend_noirq callbacks from
being executed for devices that are still runtime-suspended in
__device_suspend_late(), because running the same callback funtion
that was previously run by PM-runtime for them may be invalid.

However, it does that only for devices without any middle-layer
callbacks for the late/noirq/early suspend/resume phases even
though it would be simpler and more consistent to skip the
driver-lavel callbacks for all devices with SMART_SUSPEND set
that are runtime-suspended in __device_suspend_late().

Simplify the code in accordance with the above observation.

Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
2020-04-20 10:32:15 +02:00
..
clock_ops.c PM / clk: Remove error message on out-of-memory condition 2019-05-28 19:40:21 +02:00
common.c PM / Domains: Introduce dev_pm_domain_start() 2019-11-13 11:41:50 +01:00
domain_governor.c PM / QOS: Pass request type to dev_pm_qos_read_value() 2019-07-04 10:40:54 +02:00
domain.c PM / Domains: Allow no domain-idle-states DT property in genpd when parsing 2020-03-14 12:03:05 +01:00
generic_ops.c drivers: base: power: add proper SPDX identifiers on files that did not have them. 2019-04-04 20:03:40 +02:00
main.c PM: sleep: core: Simplify the SMART_SUSPEND flag handling 2020-04-20 10:32:15 +02:00
Makefile PM / QoS: Initial kunit test 2019-11-29 12:04:49 +01:00
power.h drivers/base/power: add dpm_sysfs_change_owner() 2020-02-26 20:07:25 -08:00
qos-test.c kunit: allow kunit tests to be loaded as a module 2020-01-09 16:42:29 -07:00
qos.c PM / QoS: Restore DEV_PM_QOS_MIN/MAX_FREQUENCY 2019-11-29 12:04:50 +01:00
runtime.c PM: runtime: Add pm_runtime_get_if_active() 2020-03-04 11:01:18 +01:00
sysfs.c drivers/base/power: add dpm_sysfs_change_owner() 2020-02-26 20:07:25 -08:00
trace.c drivers: base: power: add proper SPDX identifiers on files that did not have them. 2019-04-04 20:03:40 +02:00
wakeirq.c PM / wakeirq: remove unnecessary parentheses 2019-11-13 11:31:08 +01:00
wakeup_stats.c PM / wakeup: Unexport wakeup_source_sysfs_{add,remove}() 2019-08-21 00:26:43 +02:00
wakeup.c PM: sleep: wakeup: Skip wakeup_source_sysfs_remove() if device is not there 2020-03-25 11:15:55 +01:00