Merge 3.9-rc4 into driver-core-next

This is to fix up a build problem with a wireless driver due to the
dynamic-debug patches in this branch.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 42 insertions, 15 deletions

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 63452943abd1..fb10728f6372 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -224,7 +224,7 @@ static void cpu_device_release(struct device *dev)
          * by the cpu device.
          *
          * Never copy this way of doing things, or you too will be made fun of
-         * on the linux-kerenl list, you have been warned.
+         * on the linux-kernel list, you have been warned.
          */
 }
 
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index d81460309182..b392b353be39 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -305,7 +305,7 @@ static bool fw_read_file_contents(struct file *file, struct firmware_buf *fw_buf
         char *buf;
 
         size = fw_file_size(file);
-        if (size < 0)
+        if (size <= 0)
                 return false;
         buf = vmalloc(size);
         if (!buf)
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index 07aad786f817..46a213a596e2 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -56,6 +56,19 @@ static const struct file_operations regmap_name_fops = {
         .llseek = default_llseek,
 };
 
+static void regmap_debugfs_free_dump_cache(struct regmap *map)
+{
+        struct regmap_debugfs_off_cache *c;
+
+        while (!list_empty(&map->debugfs_off_cache)) {
+                c = list_first_entry(&map->debugfs_off_cache,
+                                     struct regmap_debugfs_off_cache,
+                                     list);
+                list_del(&c->list);
+                kfree(c);
+        }
+}
+
 /*
  * Work out where the start offset maps into register numbers, bearing
  * in mind that we suppress hidden registers.
@@ -91,8 +104,10 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
                         /* No cache entry?  Start a new one */
                         if (!c) {
                                 c = kzalloc(sizeof(*c), GFP_KERNEL);
-                                if (!c)
-                                        break;
+                                if (!c) {
+                                        regmap_debugfs_free_dump_cache(map);
+                                        return base;
+                                }
                                 c->min = p;
                                 c->base_reg = i;
                         }
@@ -101,14 +116,34 @@ static unsigned int regmap_debugfs_get_dump_start(struct regmap *map,
                 }
         }
 
+        /* Close the last entry off if we didn't scan beyond it */
+        if (c) {
+                c->max = p - 1;
+                list_add_tail(&c->list,
+                              &map->debugfs_off_cache);
+        } else {
+                return base;
+        }
+
+        /*
+         * This should never happen; we return above if we fail to
+         * allocate and we should never be in this code if there are
+         * no registers at all.
+         */
+        if (list_empty(&map->debugfs_off_cache)) {
+                WARN_ON(list_empty(&map->debugfs_off_cache));
+                return base;
+        }
+
         /* Find the relevant block */
         list_for_each_entry(c, &map->debugfs_off_cache, list) {
-                if (*pos >= c->min && *pos <= c->max) {
+                if (from >= c->min && from <= c->max) {
                         *pos = c->min;
                         return c->base_reg;
                 }
 
-                ret = c->max;
+                *pos = c->min;
+                ret = c->base_reg;
         }
 
         return ret;
@@ -387,16 +422,8 @@ void regmap_debugfs_init(struct regmap *map, const char *name)
 
 void regmap_debugfs_exit(struct regmap *map)
 {
-        struct regmap_debugfs_off_cache *c;
-
         debugfs_remove_recursive(map->debugfs);
-        while (!list_empty(&map->debugfs_off_cache)) {
-                c = list_first_entry(&map->debugfs_off_cache,
-                                     struct regmap_debugfs_off_cache,
-                                     list);
-                list_del(&c->list);
-                kfree(c);
-        }
+        regmap_debugfs_free_dump_cache(map);
         kfree(map->debugfs_name);
 }