1 files changed, 5 insertions, 15 deletions

diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index f36027591e1a..c9b4c04b1cf6 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -48,7 +48,7 @@ static ssize_t regmap_name_read_file(struct file *file,
 		name = map->dev->driver->name;
 
 	ret = snprintf(buf, PAGE_SIZE, "%s\n", name);
-	if (ret < 0) {
+	if (ret >= PAGE_SIZE) {
 		kfree(buf);
 		return ret;
 	}
@@ -226,8 +226,8 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
 	if (*ppos < 0 || !count)
 		return -EINVAL;
 
-	if (count > (PAGE_SIZE << MAX_ORDER))
-		count = PAGE_SIZE << MAX_ORDER;
+	if (count > (PAGE_SIZE << MAX_PAGE_ORDER))
+		count = PAGE_SIZE << MAX_PAGE_ORDER;
 
 	buf = kmalloc(count, GFP_KERNEL);
 	if (!buf)
@@ -373,8 +373,8 @@ static ssize_t regmap_reg_ranges_read_file(struct file *file,
 	if (*ppos < 0 || !count)
 		return -EINVAL;
 
-	if (count > (PAGE_SIZE << MAX_ORDER))
-		count = PAGE_SIZE << MAX_ORDER;
+	if (count > (PAGE_SIZE << MAX_PAGE_ORDER))
+		count = PAGE_SIZE << MAX_PAGE_ORDER;
 
 	buf = kmalloc(count, GFP_KERNEL);
 	if (!buf)
@@ -470,10 +470,6 @@ static ssize_t regmap_cache_only_write_file(struct file *file,
 	if (err)
 		return count;
 
-	err = debugfs_file_get(file->f_path.dentry);
-	if (err)
-		return err;
-
 	map->lock(map->lock_arg);
 
 	if (new_val && !map->cache_only) {
@@ -486,7 +482,6 @@ static ssize_t regmap_cache_only_write_file(struct file *file,
 	map->cache_only = new_val;
 
 	map->unlock(map->lock_arg);
-	debugfs_file_put(file->f_path.dentry);
 
 	if (require_sync) {
 		err = regcache_sync(map);
@@ -517,10 +512,6 @@ static ssize_t regmap_cache_bypass_write_file(struct file *file,
 	if (err)
 		return count;
 
-	err = debugfs_file_get(file->f_path.dentry);
-	if (err)
-		return err;
-
 	map->lock(map->lock_arg);
 
 	if (new_val && !map->cache_bypass) {
@@ -532,7 +523,6 @@ static ssize_t regmap_cache_bypass_write_file(struct file *file,
 	map->cache_bypass = new_val;
 
 	map->unlock(map->lock_arg);
-	debugfs_file_put(file->f_path.dentry);
 
 	return count;
 }