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Diffstat (limited to 'kernel/power/hibernate.c')
-rw-r--r--kernel/power/hibernate.c47
1 files changed, 25 insertions, 22 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 6d6d28870335..0a186cfde788 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -245,8 +245,8 @@ void swsusp_show_speed(struct timeval *start, struct timeval *stop,
* create_image - Create a hibernation image.
* @platform_mode: Whether or not to use the platform driver.
*
- * Execute device drivers' .freeze_noirq() callbacks, create a hibernation image
- * and execute the drivers' .thaw_noirq() callbacks.
+ * Execute device drivers' "late" and "noirq" freeze callbacks, create a
+ * hibernation image and run the drivers' "noirq" and "early" thaw callbacks.
*
* Control reappears in this routine after the subsequent restore.
*/
@@ -254,7 +254,7 @@ static int create_image(int platform_mode)
{
int error;
- error = dpm_suspend_noirq(PMSG_FREEZE);
+ error = dpm_suspend_end(PMSG_FREEZE);
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
"aborting hibernation\n");
@@ -306,7 +306,7 @@ static int create_image(int platform_mode)
Platform_finish:
platform_finish(platform_mode);
- dpm_resume_noirq(in_suspend ?
+ dpm_resume_start(in_suspend ?
(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
return error;
@@ -343,13 +343,13 @@ int hibernation_snapshot(int platform_mode)
* successful freezer test.
*/
freezer_test_done = true;
- goto Cleanup;
+ goto Thaw;
}
error = dpm_prepare(PMSG_FREEZE);
if (error) {
dpm_complete(PMSG_RECOVER);
- goto Cleanup;
+ goto Thaw;
}
suspend_console();
@@ -385,6 +385,8 @@ int hibernation_snapshot(int platform_mode)
platform_end(platform_mode);
return error;
+ Thaw:
+ thaw_kernel_threads();
Cleanup:
swsusp_free();
goto Close;
@@ -394,16 +396,16 @@ int hibernation_snapshot(int platform_mode)
* resume_target_kernel - Restore system state from a hibernation image.
* @platform_mode: Whether or not to use the platform driver.
*
- * Execute device drivers' .freeze_noirq() callbacks, restore the contents of
- * highmem that have not been restored yet from the image and run the low-level
- * code that will restore the remaining contents of memory and switch to the
- * just restored target kernel.
+ * Execute device drivers' "noirq" and "late" freeze callbacks, restore the
+ * contents of highmem that have not been restored yet from the image and run
+ * the low-level code that will restore the remaining contents of memory and
+ * switch to the just restored target kernel.
*/
static int resume_target_kernel(bool platform_mode)
{
int error;
- error = dpm_suspend_noirq(PMSG_QUIESCE);
+ error = dpm_suspend_end(PMSG_QUIESCE);
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
"aborting resume\n");
@@ -460,7 +462,7 @@ static int resume_target_kernel(bool platform_mode)
Cleanup:
platform_restore_cleanup(platform_mode);
- dpm_resume_noirq(PMSG_RECOVER);
+ dpm_resume_start(PMSG_RECOVER);
return error;
}
@@ -518,7 +520,7 @@ int hibernation_platform_enter(void)
goto Resume_devices;
}
- error = dpm_suspend_noirq(PMSG_HIBERNATE);
+ error = dpm_suspend_end(PMSG_HIBERNATE);
if (error)
goto Resume_devices;
@@ -549,7 +551,7 @@ int hibernation_platform_enter(void)
Platform_finish:
hibernation_ops->finish();
- dpm_resume_noirq(PMSG_RESTORE);
+ dpm_resume_start(PMSG_RESTORE);
Resume_devices:
entering_platform_hibernation = false;
@@ -616,7 +618,7 @@ int hibernate(void)
/* Allocate memory management structures */
error = create_basic_memory_bitmaps();
if (error)
- goto Exit;
+ goto Enable_umh;
printk(KERN_INFO "PM: Syncing filesystems ... ");
sys_sync();
@@ -624,15 +626,11 @@ int hibernate(void)
error = freeze_processes();
if (error)
- goto Finish;
+ goto Free_bitmaps;
error = hibernation_snapshot(hibernation_mode == HIBERNATION_PLATFORM);
- if (error)
- goto Thaw;
- if (freezer_test_done) {
- freezer_test_done = false;
+ if (error || freezer_test_done)
goto Thaw;
- }
if (in_suspend) {
unsigned int flags = 0;
@@ -657,8 +655,13 @@ int hibernate(void)
Thaw:
thaw_processes();
- Finish:
+
+ /* Don't bother checking whether freezer_test_done is true */
+ freezer_test_done = false;
+
+ Free_bitmaps:
free_basic_memory_bitmaps();
+ Enable_umh:
usermodehelper_enable();
Exit:
pm_notifier_call_chain(PM_POST_HIBERNATION);