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authorRafael J. Wysocki <rjw@sisk.pl>2010-12-16 00:51:08 +0100
committerRafael J. Wysocki <rjw@sisk.pl>2010-12-24 15:02:43 +0100
commit5b219a51fdceaf76e0e18da57c7efb9e5586e567 (patch)
treede72cbfa6c47170a1118716ffafc5a876d4ebfbc /drivers/base
parent8a43a9ab7b329aa8590f8a064df9bf8c80987507 (diff)
PM: Remove redundant checks from core device resume routines
Since a separate list of devices is used to link devices that have completed each stage of suspend (or resume), it is not necessary to check dev->power.status in the core device resume routines any more. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/main.c44
1 files changed, 17 insertions, 27 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index b711867fa58..bb5c8cb6417 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -485,22 +485,18 @@ void dpm_resume_noirq(pm_message_t state)
transition_started = false;
while (!list_empty(&dpm_noirq_list)) {
struct device *dev = to_device(dpm_noirq_list.next);
+ int error;
get_device(dev);
- if (dev->power.status > DPM_OFF) {
- int error;
-
- dev->power.status = DPM_OFF;
- mutex_unlock(&dpm_list_mtx);
+ dev->power.status = DPM_OFF;
+ list_move_tail(&dev->power.entry, &dpm_suspended_list);
+ mutex_unlock(&dpm_list_mtx);
- error = device_resume_noirq(dev, state);
+ error = device_resume_noirq(dev, state);
+ if (error)
+ pm_dev_err(dev, state, " early", error);
- mutex_lock(&dpm_list_mtx);
- if (error)
- pm_dev_err(dev, state, " early", error);
- }
- if (!list_empty(&dev->power.entry))
- list_move_tail(&dev->power.entry, &dpm_suspended_list);
+ mutex_lock(&dpm_list_mtx);
put_device(dev);
}
mutex_unlock(&dpm_list_mtx);
@@ -619,9 +615,6 @@ static void dpm_resume(pm_message_t state)
async_error = 0;
list_for_each_entry(dev, &dpm_suspended_list, power.entry) {
- if (dev->power.status < DPM_OFF)
- continue;
-
INIT_COMPLETION(dev->power.completion);
if (is_async(dev)) {
get_device(dev);
@@ -632,16 +625,16 @@ static void dpm_resume(pm_message_t state)
while (!list_empty(&dpm_suspended_list)) {
dev = to_device(dpm_suspended_list.next);
get_device(dev);
- if (dev->power.status >= DPM_OFF && !is_async(dev)) {
+ if (!is_async(dev)) {
int error;
mutex_unlock(&dpm_list_mtx);
error = device_resume(dev, state, false);
-
- mutex_lock(&dpm_list_mtx);
if (error)
pm_dev_err(dev, state, "", error);
+
+ mutex_lock(&dpm_list_mtx);
}
if (!list_empty(&dev->power.entry))
list_move_tail(&dev->power.entry, &dpm_prepared_list);
@@ -697,17 +690,14 @@ static void dpm_complete(pm_message_t state)
struct device *dev = to_device(dpm_prepared_list.prev);
get_device(dev);
- if (dev->power.status > DPM_ON) {
- dev->power.status = DPM_ON;
- mutex_unlock(&dpm_list_mtx);
+ dev->power.status = DPM_ON;
+ list_move(&dev->power.entry, &list);
+ mutex_unlock(&dpm_list_mtx);
- device_complete(dev, state);
- pm_runtime_put_sync(dev);
+ device_complete(dev, state);
+ pm_runtime_put_sync(dev);
- mutex_lock(&dpm_list_mtx);
- }
- if (!list_empty(&dev->power.entry))
- list_move(&dev->power.entry, &list);
+ mutex_lock(&dpm_list_mtx);
put_device(dev);
}
list_splice(&list, &dpm_list);