ubi/cdev: switch to fixed_size_llseek()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/drivers/mtd/ubi/cdev.c b/drivers/mtd/ubi/cdev.c
index 4f02848..8ca49f2 100644 (file)
--- a/drivers/mtd/ubi/cdev.c
+++ b/drivers/mtd/ubi/cdev.c
@@ -155,7 +155,6 @@ static loff_t vol_cdev_llseek(struct file *file, loff_t offset, int origin)
 {
        struct ubi_volume_desc *desc = file->private_data;
        struct ubi_volume *vol = desc->vol;
-       loff_t new_offset;
 
        if (vol->updating) {
                /* Update is in progress, seeking is prohibited */
@@ -163,30 +162,7 @@ static loff_t vol_cdev_llseek(struct file *file, loff_t offset, int origin)
                return -EBUSY;
        }
 
-       switch (origin) {
-       case 0: /* SEEK_SET */
-               new_offset = offset;
-               break;
-       case 1: /* SEEK_CUR */
-               new_offset = file->f_pos + offset;
-               break;
-       case 2: /* SEEK_END */
-               new_offset = vol->used_bytes + offset;
-               break;
-       default:
-               return -EINVAL;
-       }
-
-       if (new_offset < 0 || new_offset > vol->used_bytes) {
-               ubi_err("bad seek %lld", new_offset);
-               return -EINVAL;
-       }
-
-       dbg_gen("seek volume %d, offset %lld, origin %d, new offset %lld",
-               vol->vol_id, offset, origin, new_offset);
-
-       file->f_pos = new_offset;
-       return new_offset;
+       return fixed_size_llseek(file, offset, origin, vol->used_bytes);
 }
 
 static int vol_cdev_fsync(struct file *file, loff_t start, loff_t end,