1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 480f658db6f2..486ee50cfdda 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -256,8 +256,7 @@ static inline void mddev_unlock(mddev_t * mddev)
 {
         up(&mddev->reconfig_sem);
 
-        if (mddev->thread)
-                md_wakeup_thread(mddev->thread);
+        md_wakeup_thread(mddev->thread);
 }
 
 mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr)
@@ -623,6 +622,7 @@ static int super_90_validate(mddev_t *mddev, mdk_rdev_t *rdev)
                 mddev->raid_disks = sb->raid_disks;
                 mddev->size = sb->size;
                 mddev->events = md_event(sb);
+                mddev->bitmap_offset = 0;
 
                 if (sb->state & (1<<MD_SB_CLEAN))
                         mddev->recovery_cp = MaxSector;
@@ -938,6 +938,7 @@ static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev)
                 mddev->raid_disks = le32_to_cpu(sb->raid_disks);
                 mddev->size = le64_to_cpu(sb->size)/2;
                 mddev->events = le64_to_cpu(sb->events);
+                mddev->bitmap_offset = 0;
                 
                 mddev->recovery_cp = le64_to_cpu(sb->resync_offset);
                 memcpy(mddev->uuid, sb->set_uuid, 16);
@@ -1712,6 +1713,7 @@ static int do_md_run(mddev_t * mddev)
         mddev->in_sync = 1;
         
         set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+        md_wakeup_thread(mddev->thread);
         
         if (mddev->sb_dirty)
                 md_update_sb(mddev);
@@ -1824,6 +1826,7 @@ static int do_md_stop(mddev_t * mddev, int ro)
                 fput(mddev->bitmap_file);
                 mddev->bitmap_file = NULL;
         }
+        mddev->bitmap_offset = 0;
 
         /*
          * Free resources if final stop
@@ -2233,8 +2236,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
                         export_rdev(rdev);
 
                 set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
-                if (mddev->thread)
-                        md_wakeup_thread(mddev->thread);
+                md_wakeup_thread(mddev->thread);
                 return err;
         }