1 files changed, 24 insertions, 23 deletions

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index b26f5f1e773e..c9c759d5a15c 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -39,7 +39,7 @@ static int resume_delay;
 static char resume_file[256] = CONFIG_PM_STD_PARTITION;
 dev_t swsusp_resume_device;
 sector_t swsusp_resume_block;
-int in_suspend __nosavedata;
+__visible int in_suspend __nosavedata;
 
 enum {
         HIBERNATION_INVALID,
@@ -644,22 +644,23 @@ 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;
+
+        lock_device_hotplug();
+        /* 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 +683,14 @@ int hibernate(void)
                 pr_debug("PM: Image restored successfully.\n");
         }
 
+ Free_bitmaps:
+        free_basic_memory_bitmaps();
  Thaw:
+        unlock_device_hotplug();
         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 +807,20 @@ 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");
 
+        lock_device_hotplug();
+        error = create_basic_memory_bitmaps();
+        if (error)
+                goto Thaw;
+
         error = swsusp_read(&flags);
         swsusp_close(FMODE_READ);
         if (!error)
@@ -828,9 +828,10 @@ 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:
+        unlock_device_hotplug();
+        thaw_processes();
  Finish:
         pm_notifier_call_chain(PM_POST_RESTORE);
         pm_restore_console();
@@ -840,7 +841,7 @@ 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;
 }