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-rw-r--r--kernel/power/hibernate.c41
-rw-r--r--kernel/power/user.c22
2 files changed, 31 insertions, 32 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index b26f5f1e773e..d4e54053d009 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -644,22 +644,22 @@ int hibernate(void)
if (error)
goto Exit;
- /* Allocate memory management structures */
- error = create_basic_memory_bitmaps();
- if (error)
- goto Exit;
-
printk(KERN_INFO "PM: Syncing filesystems ... ");
sys_sync();
printk("done.\n");
error = freeze_processes();
if (error)
- goto Free_bitmaps;
+ goto Exit;
+
+ /* Allocate memory management structures */
+ error = create_basic_memory_bitmaps();
+ if (error)
+ goto Thaw;
error = hibernation_snapshot(hibernation_mode == HIBERNATION_PLATFORM);
if (error || freezer_test_done)
- goto Thaw;
+ goto Free_bitmaps;
if (in_suspend) {
unsigned int flags = 0;
@@ -682,14 +682,13 @@ int hibernate(void)
pr_debug("PM: Image restored successfully.\n");
}
+ Free_bitmaps:
+ free_basic_memory_bitmaps();
Thaw:
thaw_processes();
/* Don't bother checking whether freezer_test_done is true */
freezer_test_done = false;
-
- Free_bitmaps:
- free_basic_memory_bitmaps();
Exit:
pm_notifier_call_chain(PM_POST_HIBERNATION);
pm_restore_console();
@@ -806,21 +805,19 @@ static int software_resume(void)
pm_prepare_console();
error = pm_notifier_call_chain(PM_RESTORE_PREPARE);
if (error)
- goto close_finish;
-
- error = create_basic_memory_bitmaps();
- if (error)
- goto close_finish;
+ goto Close_Finish;
pr_debug("PM: Preparing processes for restore.\n");
error = freeze_processes();
- if (error) {
- swsusp_close(FMODE_READ);
- goto Done;
- }
+ if (error)
+ goto Close_Finish;
pr_debug("PM: Loading hibernation image.\n");
+ error = create_basic_memory_bitmaps();
+ if (error)
+ goto Thaw;
+
error = swsusp_read(&flags);
swsusp_close(FMODE_READ);
if (!error)
@@ -828,9 +825,9 @@ static int software_resume(void)
printk(KERN_ERR "PM: Failed to load hibernation image, recovering.\n");
swsusp_free();
- thaw_processes();
- Done:
free_basic_memory_bitmaps();
+ Thaw:
+ thaw_processes();
Finish:
pm_notifier_call_chain(PM_POST_RESTORE);
pm_restore_console();
@@ -840,7 +837,7 @@ static int software_resume(void)
mutex_unlock(&pm_mutex);
pr_debug("PM: Hibernation image not present or could not be loaded.\n");
return error;
-close_finish:
+ Close_Finish:
swsusp_close(FMODE_READ);
goto Finish;
}
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 4ed81e74f86f..63368163e98d 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -60,11 +60,6 @@ static int snapshot_open(struct inode *inode, struct file *filp)
error = -ENOSYS;
goto Unlock;
}
- if(create_basic_memory_bitmaps()) {
- atomic_inc(&snapshot_device_available);
- error = -ENOMEM;
- goto Unlock;
- }
nonseekable_open(inode, filp);
data = &snapshot_state;
filp->private_data = data;
@@ -90,10 +85,9 @@ static int snapshot_open(struct inode *inode, struct file *filp)
if (error)
pm_notifier_call_chain(PM_POST_RESTORE);
}
- if (error) {
- free_basic_memory_bitmaps();
+ if (error)
atomic_inc(&snapshot_device_available);
- }
+
data->frozen = 0;
data->ready = 0;
data->platform_support = 0;
@@ -111,11 +105,11 @@ static int snapshot_release(struct inode *inode, struct file *filp)
lock_system_sleep();
swsusp_free();
- free_basic_memory_bitmaps();
data = filp->private_data;
free_all_swap_pages(data->swap);
if (data->frozen) {
pm_restore_gfp_mask();
+ free_basic_memory_bitmaps();
thaw_processes();
}
pm_notifier_call_chain(data->mode == O_RDONLY ?
@@ -220,14 +214,22 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd,
printk("done.\n");
error = freeze_processes();
- if (!error)
+ if (error)
+ break;
+
+ error = create_basic_memory_bitmaps();
+ if (error)
+ thaw_processes();
+ else
data->frozen = 1;
+
break;
case SNAPSHOT_UNFREEZE:
if (!data->frozen || data->ready)
break;
pm_restore_gfp_mask();
+ free_basic_memory_bitmaps();
thaw_processes();
data->frozen = 0;
break;