f_fs: saner API for ffs_sb_create_file()

make it return dentry instead of inode

Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c
index 0dc3552..4726e27 100644 (file)
--- a/drivers/usb/gadget/function/f_fs.c
+++ b/drivers/usb/gadget/function/f_fs.c
@@ -164,10 +164,9 @@ struct ffs_desc_helper {
 static int  __must_check ffs_epfiles_create(struct ffs_data *ffs);
 static void ffs_epfiles_destroy(struct ffs_epfile *epfiles, unsigned count);
 
-static struct inode *__must_check
+static struct dentry *
 ffs_sb_create_file(struct super_block *sb, const char *name, void *data,
-                  const struct file_operations *fops,
-                  struct dentry **dentry_p);
+                  const struct file_operations *fops);
 
 /* Devices management *******************************************************/
 
@@ -1096,10 +1095,9 @@ ffs_sb_make_inode(struct super_block *sb, void *data,
 }
 
 /* Create "regular" file */
-static struct inode *ffs_sb_create_file(struct super_block *sb,
+static struct dentry *ffs_sb_create_file(struct super_block *sb,
                                        const char *name, void *data,
-                                       const struct file_operations *fops,
-                                       struct dentry **dentry_p)
+                                       const struct file_operations *fops)
 {
        struct ffs_data *ffs = sb->s_fs_info;
        struct dentry   *dentry;
@@ -1118,10 +1116,7 @@ static struct inode *ffs_sb_create_file(struct super_block *sb,
        }
 
        d_add(dentry, inode);
-       if (dentry_p)
-               *dentry_p = dentry;
-
-       return inode;
+       return dentry;
 }
 
 /* Super block */
@@ -1166,7 +1161,7 @@ static int ffs_sb_fill(struct super_block *sb, void *_data, int silent)
 
        /* EP0 file */
        if (unlikely(!ffs_sb_create_file(sb, "ep0", ffs,
-                                        &ffs_ep0_operations, NULL)))
+                                        &ffs_ep0_operations)))
                return -ENOMEM;
 
        return 0;
@@ -1535,9 +1530,10 @@ static int ffs_epfiles_create(struct ffs_data *ffs)
                mutex_init(&epfile->mutex);
                init_waitqueue_head(&epfile->wait);
                sprintf(epfiles->name, "ep%u",  i);
-               if (!unlikely(ffs_sb_create_file(ffs->sb, epfiles->name, epfile,
-                                                &ffs_epfile_operations,
-                                                &epfile->dentry))) {
+               epfile->dentry = ffs_sb_create_file(ffs->sb, epfiles->name,
+                                                epfile,
+                                                &ffs_epfile_operations);
+               if (unlikely(!epfile->dentry)) {
                        ffs_epfiles_destroy(epfiles, i - 1);
                        return -ENOMEM;
                }