5 files changed, 24 insertions, 9 deletions

diff --git a/lib/iomap_copy.c b/lib/iomap_copy.c
index a6b1e271d53c..351045f4f63c 100644
--- a/lib/iomap_copy.c
+++ b/lib/iomap_copy.c
@@ -15,8 +15,8 @@
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#include <linux/io.h>
 #include <linux/module.h>
+#include <linux/io.h>
 
 /**
  * __iowrite32_copy - copy data to MMIO space, in 32-bit units
diff --git a/lib/kobject.c b/lib/kobject.c
index 7a0e6809490d..efe67fa96a71 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -72,6 +72,8 @@ static int get_kobj_path_length(struct kobject *kobj)
          * Add 1 to strlen for leading '/' of each level.
          */
         do {
+                if (kobject_name(parent) == NULL)
+                        return 0;
                 length += strlen(kobject_name(parent)) + 1;
                 parent = parent->parent;
         } while (parent);
@@ -107,6 +109,8 @@ char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask)
         int len;
 
         len = get_kobj_path_length(kobj);
+        if (len == 0)
+                return NULL;
         path = kmalloc(len, gfp_mask);
         if (!path)
                 return NULL;
@@ -162,6 +166,11 @@ int kobject_add(struct kobject * kobj)
                 return -ENOENT;
         if (!kobj->k_name)
                 kobj->k_name = kobj->name;
+        if (!kobj->k_name) {
+                pr_debug("kobject attempted to be registered with no name!\n");
+                WARN_ON(1);
+                return -EINVAL;
+        }
         parent = kobject_get(kobj->parent);
 
         pr_debug("kobject %s: registering. parent: %s, set: %s\n",
diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
index f56e27ae9d52..086a0c6e888e 100644
--- a/lib/kobject_uevent.c
+++ b/lib/kobject_uevent.c
@@ -22,7 +22,7 @@
 #include <linux/kobject.h>
 #include <net/sock.h>
 
-#define BUFFER_SIZE     1024    /* buffer for the variables */
+#define BUFFER_SIZE     2048    /* buffer for the variables */
 #define NUM_ENVP        32      /* number of env pointers */
 
 #if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
@@ -38,6 +38,10 @@ static char *action_to_string(enum kobject_action action)
                 return "remove";
         case KOBJ_CHANGE:
                 return "change";
+        case KOBJ_MOUNT:
+                return "mount";
+        case KOBJ_UMOUNT:
+                return "umount";
         case KOBJ_OFFLINE:
                 return "offline";
         case KOBJ_ONLINE:
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index c0bd4a914803..1e5b17dc7e3d 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -752,12 +752,14 @@ void *radix_tree_delete(struct radix_tree_root *root, unsigned long index)
          */
         nr_cleared_tags = 0;
         for (tag = 0; tag < RADIX_TREE_TAGS; tag++) {
+                tags[tag] = 1;
                 if (tag_get(pathp->node, tag, pathp->offset)) {
                         tag_clear(pathp->node, tag, pathp->offset);
-                        tags[tag] = 0;
-                        nr_cleared_tags++;
-                } else
-                        tags[tag] = 1;
+                        if (!any_tag_set(pathp->node, tag)) {
+                                tags[tag] = 0;
+                                nr_cleared_tags++;
+                        }
+                }
         }
 
         for (pathp--; nr_cleared_tags && pathp->node; pathp--) {
diff --git a/lib/spinlock_debug.c b/lib/spinlock_debug.c
index c8bb8cc899d7..d8b6bb419d49 100644
--- a/lib/spinlock_debug.c
+++ b/lib/spinlock_debug.c
@@ -72,9 +72,9 @@ static void __spin_lock_debug(spinlock_t *lock)
 
         for (;;) {
                 for (i = 0; i < loops_per_jiffy * HZ; i++) {
-                        cpu_relax();
                         if (__raw_spin_trylock(&lock->raw_lock))
                                 return;
+                        __delay(1);
                 }
                 /* lockup suspected: */
                 if (print_once) {
@@ -144,9 +144,9 @@ static void __read_lock_debug(rwlock_t *lock)
 
         for (;;) {
                 for (i = 0; i < loops_per_jiffy * HZ; i++) {
-                        cpu_relax();
                         if (__raw_read_trylock(&lock->raw_lock))
                                 return;
+                        __delay(1);
                 }
                 /* lockup suspected: */
                 if (print_once) {
@@ -217,9 +217,9 @@ static void __write_lock_debug(rwlock_t *lock)
 
         for (;;) {
                 for (i = 0; i < loops_per_jiffy * HZ; i++) {
-                        cpu_relax();
                         if (__raw_write_trylock(&lock->raw_lock))
                                 return;
+                        __delay(1);
                 }
                 /* lockup suspected: */
                 if (print_once) {