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authorUlf Hansson <ulf.hansson@linaro.org>2017-10-03 10:11:06 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-10-11 16:34:28 +0300
commite4da817d2acbd05217adc0dc821bc8361e86ee30 (patch)
tree9e88c2af4ed35dc02debeabaa461a6d5551eb076 /drivers/acpi/device_pm.c
parent63705c406a8adbd6f26691148b09d466dd4d8d2f (diff)
downloadlinux-e4da817d2acbd05217adc0dc821bc8361e86ee30.tar.xz
ACPI / PM: Restore acpi_subsys_complete()
Commit 58a1fbbb2ee8 (PM / PCI / ACPI: Kick devices that might have been reset by firmware), made PCI's and ACPI's ->complete() callbacks to be assigned to a new API called pm_complete_with_resume_check(), which was introduced in the same change. Later it turned out that using pm_complete_with_resume_check() wasn't good enough for PCI, as it needed additional PCI specific checks, before deciding whether runtime resuming the device is needed when running the ->complete() callback. This leaves ACPI as the only user of pm_complete_with_resume_check(). Therefore let's restore ACPI's acpi_subsys_complete(), which was dropped in commit 58a1fbbb2ee8 (PM / PCI / ACPI: Kick devices that might have been reset by firmware). This enables us to remove the pm_complete_with_resume_check() API in a following change, but it also enables ACPI to add more ACPI specific checks in acpi_subsys_complete() if that turns out to be necessary. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/device_pm.c')
-rw-r--r--drivers/acpi/device_pm.c19
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c
index 6eb51145dcf7..d17fac453a30 100644
--- a/drivers/acpi/device_pm.c
+++ b/drivers/acpi/device_pm.c
@@ -997,6 +997,23 @@ int acpi_subsys_prepare(struct device *dev)
EXPORT_SYMBOL_GPL(acpi_subsys_prepare);
/**
+ * acpi_subsys_complete - Finalize device's resume during system resume.
+ * @dev: Device to handle.
+ */
+void acpi_subsys_complete(struct device *dev)
+{
+ pm_generic_complete(dev);
+ /*
+ * If the device had been runtime-suspended before the system went into
+ * the sleep state it is going out of and it has never been resumed till
+ * now, resume it in case the firmware powered it up.
+ */
+ if (dev->power.direct_complete && pm_resume_via_firmware())
+ pm_request_resume(dev);
+}
+EXPORT_SYMBOL_GPL(acpi_subsys_complete);
+
+/**
* acpi_subsys_suspend - Run the device driver's suspend callback.
* @dev: Device to handle.
*
@@ -1064,7 +1081,7 @@ static struct dev_pm_domain acpi_general_pm_domain = {
.runtime_resume = acpi_subsys_runtime_resume,
#ifdef CONFIG_PM_SLEEP
.prepare = acpi_subsys_prepare,
- .complete = pm_complete_with_resume_check,
+ .complete = acpi_subsys_complete,
.suspend = acpi_subsys_suspend,
.suspend_late = acpi_subsys_suspend_late,
.resume_early = acpi_subsys_resume_early,