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authorRafael J. Wysocki <rjw@sisk.pl>2008-03-23 20:28:24 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-19 19:10:28 -0700
commitb844eba292b477cda14582bfc6f535deed57a82d (patch)
treeb2418a9a4fc672654f4592ae0a3e2853d82271c3 /drivers/base/power
parent138fe4e069798d9aa948a5402ff15e58f483ee4e (diff)
PM: Remove destroy_suspended_device()
After 2.6.24 there was a plan to make the PM core acquire all device semaphores during a suspend/hibernation to protect itself from concurrent operations involving device objects. That proved to be too heavy-handed and we found a better way to achieve the goal, but before it happened, we had introduced the functions device_pm_schedule_removal() and destroy_suspended_device() to allow drivers to "safely" destroy a suspended device and we had adapted some drivers to use them. Now that these functions are no longer necessary, it seems reasonable to remove them and modify their users to use the normal device unregistration instead. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base/power')
-rw-r--r--drivers/base/power/main.c40
1 files changed, 0 insertions, 40 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 5630af302b2..c4568b82875 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -50,7 +50,6 @@
LIST_HEAD(dpm_active);
static LIST_HEAD(dpm_off);
static LIST_HEAD(dpm_off_irq);
-static LIST_HEAD(dpm_destroy);
static DEFINE_MUTEX(dpm_list_mtx);
@@ -104,24 +103,6 @@ void device_pm_remove(struct device *dev)
mutex_unlock(&dpm_list_mtx);
}
-/**
- * device_pm_schedule_removal - schedule the removal of a suspended device
- * @dev: Device to destroy
- *
- * Moves the device to the dpm_destroy list for further processing by
- * unregister_dropped_devices().
- */
-void device_pm_schedule_removal(struct device *dev)
-{
- pr_debug("PM: Preparing for removal: %s:%s\n",
- dev->bus ? dev->bus->name : "No Bus",
- kobject_name(&dev->kobj));
- mutex_lock(&dpm_list_mtx);
- list_move_tail(&dev->power.entry, &dpm_destroy);
- mutex_unlock(&dpm_list_mtx);
-}
-EXPORT_SYMBOL_GPL(device_pm_schedule_removal);
-
/*------------------------- Resume routines -------------------------*/
/**
@@ -246,26 +227,6 @@ static void dpm_resume(void)
}
/**
- * unregister_dropped_devices - Unregister devices scheduled for removal
- *
- * Unregister all devices on the dpm_destroy list.
- */
-static void unregister_dropped_devices(void)
-{
- mutex_lock(&dpm_list_mtx);
- while (!list_empty(&dpm_destroy)) {
- struct list_head *entry = dpm_destroy.next;
- struct device *dev = to_device(entry);
-
- mutex_unlock(&dpm_list_mtx);
- /* This also removes the device from the list */
- device_unregister(dev);
- mutex_lock(&dpm_list_mtx);
- }
- mutex_unlock(&dpm_list_mtx);
-}
-
-/**
* device_resume - Restore state of each device in system.
*
* Resume all the devices, unlock them all, and allow new
@@ -275,7 +236,6 @@ void device_resume(void)
{
might_sleep();
dpm_resume();
- unregister_dropped_devices();
}
EXPORT_SYMBOL_GPL(device_resume);