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PM / Domains: add setter for dev.pm_domain

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Adds a function that sets the pointer to dev_pm_domain in struct device
and that warns if the device has already finished probing. The reason
why we want to enforce that is because in the general case that can
cause problems and also that we can simplify code quite a bit if we can
always assume that.

This patch also changes all current code that directly sets the
dev.pm_domain pointer.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Tomeu Vizoso
2016-01-07 16:46:13 +01:00
committed by Rafael J. Wysocki
parent 6b9cb42752
commit 989561de9b
10 changed files with 54 additions and 19 deletions
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5
drivers/acpi/device_pm.c
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@@ -22,6 +22,7 @@
#include <linux/export.h>
#include <linux/mutex.h>
#include <linux/pm_qos.h>
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include "internal.h"
@@ -1059,7 +1060,7 @@ static void acpi_dev_pm_detach(struct device *dev, bool power_off)
struct acpi_device *adev = ACPI_COMPANION(dev);
if (adev && dev->pm_domain == &acpi_general_pm_domain) {
dev->pm_domain = NULL;
dev_pm_domain_set(dev, NULL);
acpi_remove_pm_notifier(adev);
if (power_off) {
/*
@@ -1111,7 +1112,7 @@ int acpi_dev_pm_attach(struct device *dev, bool power_on)
return -EBUSY;
acpi_add_pm_notifier(adev, dev, acpi_pm_notify_work_func);
dev->pm_domain = &acpi_general_pm_domain;
dev_pm_domain_set(dev, &acpi_general_pm_domain);
if (power_on) {
acpi_dev_pm_full_power(adev);
acpi_device_wakeup(adev, ACPI_STATE_S0, false);