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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-28 07:04:00 +08:00
linux-next/drivers/base/power
Sudeep Holla 975e83cfb8 PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
If the genpd->attach_dev or genpd->power_on fails, genpd_dev_pm_attach
may return -EPROBE_DEFER initially. However genpd_alloc_dev_data sets
the PM domain for the device unconditionally.

When subsequent attempts are made to call genpd_dev_pm_attach, it may
return -EEXISTS checking dev->pm_domain without re-attempting to call
attach_dev or power_on.

platform_drv_probe then attempts to call drv->probe as the return value
-EEXIST != -EPROBE_DEFER, which may end up in a situation where the
device is accessed without it's power domain switched on.

Fixes: f104e1e5ef (PM / Domains: Re-order initialization of generic_pm_domain_data)
Cc: 4.4+ <stable@vger.kernel.org> # v4.4+
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-07-19 14:41:11 +02:00
..
opp PM / OPP: fix off-by-one bug in dev_pm_opp_get_max_volt_latency loop 2017-02-23 23:00:31 +01:00
clock_ops.c PM / clk: Add support for adding a specific clock from device-tree 2016-06-28 00:42:10 +02:00
common.c PM: Avoid false-positive warnings in dev_pm_domain_set() 2016-02-03 19:10:37 +01:00
domain_governor.c PM / Domains: Fix missing default_power_down_ok comment 2017-06-29 01:24:36 +02:00
domain.c PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present 2017-07-19 14:41:11 +02:00
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 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
Makefile PM / OPP: Move opp core to its own directory 2015-09-15 02:03:16 +02:00
power.h Driver core patches for 4.10-rc1 2016-12-13 11:42:18 -08:00
qos.c Merge branches 'pm-cpuidle', 'pm-cpufreq' and 'pm-sleep' 2017-03-03 00:43:11 +01:00
runtime.c sched/headers: Prepare to move the memalloc_noio_*() APIs to <linux/sched/mm.h> 2017-03-02 08:42:33 +01:00
sysfs.c PM / QoS: Improve sysfs pm_qos_latency_tolerance validation 2016-11-30 22:34:23 +01:00
trace.c timekeeping: Ignore the bogus sleep time if pm_trace is enabled 2016-11-29 18:02:58 +01:00
wakeirq.c PM / wakeirq: report a wakeup_event on dedicated wekup irq 2017-02-13 22:29:30 +01:00
wakeup.c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00