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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-04-18 18:52:19 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-04-24 21:31:28 +0200 |
| commit | 0fe8a1be599ab97f840ba22d98cb8f24a9f9e872 (patch) | |
| tree | fa30b29438b06839bff2c88c993efc84bbdee2f9 | |
| parent | 6e176bf8d46194353163c2cb660808bc633b45d9 (diff) | |
| download | linux-0fe8a1be599ab97f840ba22d98cb8f24a9f9e872.tar.gz linux-0fe8a1be599ab97f840ba22d98cb8f24a9f9e872.tar.bz2 linux-0fe8a1be599ab97f840ba22d98cb8f24a9f9e872.zip | |
PM: sleep: core: Rework the power.may_skip_resume handling
Because the power.may_skip_resume device status bit is taken
into account in combination with the DPM_FLAG_LEAVE_SUSPENDED
driver flag, it can be set to 'true' for all devices in the
"suspend" phase of a suspend-resume cycle, so do that.
Then, neither the PM core nor the middle-layer (sybsystem) code
handling it needs to set it to 'true' any more and it just has
to be cleared if there is a reason to avoid skipping the "noirq"
and "early" resume callbacks provided by the driver, so update
the code in question accordingly.
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>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/acpi/device_pm.c | 8 | ||||
| -rw-r--r-- | drivers/base/power/main.c | 10 | ||||
| -rw-r--r-- | drivers/pci/pci-driver.c | 8 |
3 files changed, 8 insertions, 18 deletions
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index 399684085f85..1b02d7dc7d34 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -1100,10 +1100,8 @@ int acpi_subsys_suspend_noirq(struct device *dev) { int ret; - if (dev_pm_smart_suspend_and_suspended(dev)) { - dev->power.may_skip_resume = true; + if (dev_pm_smart_suspend_and_suspended(dev)) return 0; - } ret = pm_generic_suspend_noirq(dev); if (ret) @@ -1116,8 +1114,8 @@ int acpi_subsys_suspend_noirq(struct device *dev) * acpi_subsys_complete() to take care of fixing up the device's state * anyway, if need be. */ - dev->power.may_skip_resume = device_may_wakeup(dev) || - !device_can_wakeup(dev); + if (device_can_wakeup(dev) && !device_may_wakeup(dev)) + dev->power.may_skip_resume = false; return 0; } diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 25b0302188d8..5adf0be6aa47 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -1415,14 +1415,8 @@ static int __device_suspend_late(struct device *dev, pm_message_t state, bool as if (callback) goto Run; - if (dev_pm_smart_suspend_and_suspended(dev)) { - /* - * In principle, the resume of the device may be skippend if it - * remains in runtime suspend at this point. - */ - dev->power.may_skip_resume = true; + if (dev_pm_smart_suspend_and_suspended(dev)) goto Skip; - } if (dev->driver && dev->driver->pm) { info = "late driver "; @@ -1647,7 +1641,7 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async) dev->power.direct_complete = false; } - dev->power.may_skip_resume = false; + dev->power.may_skip_resume = true; dev->power.must_resume = false; dpm_watchdog_set(&wd, dev); diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 685fbf044911..ce220b1987df 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -789,10 +789,8 @@ static int pci_pm_suspend_noirq(struct device *dev) struct pci_dev *pci_dev = to_pci_dev(dev); const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - if (dev_pm_smart_suspend_and_suspended(dev)) { - dev->power.may_skip_resume = true; + if (dev_pm_smart_suspend_and_suspended(dev)) return 0; - } if (pci_has_legacy_pm_support(pci_dev)) return pci_legacy_suspend_late(dev, PMSG_SUSPEND); @@ -880,8 +878,8 @@ Fixup: * pci_pm_complete() to take care of fixing up the device's state * anyway, if need be. */ - dev->power.may_skip_resume = device_may_wakeup(dev) || - !device_can_wakeup(dev); + if (device_can_wakeup(dev) && !device_may_wakeup(dev)) + dev->power.may_skip_resume = false; return 0; } |