diff options
Diffstat (limited to 'drivers/usb/core/file.c')
| -rw-r--r-- | drivers/usb/core/file.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index 3bdfbf88a0ae..ea337a718cc1 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -29,27 +29,19 @@ static DECLARE_RWSEM(minor_rwsem); static int usb_open(struct inode *inode, struct file *file) { - int minor = iminor(inode); - const struct file_operations *c; int err = -ENODEV; - const struct file_operations *old_fops, *new_fops = NULL; + const struct file_operations *new_fops; down_read(&minor_rwsem); - c = usb_minors[minor]; + new_fops = fops_get(usb_minors[iminor(inode)]); - if (!c || !(new_fops = fops_get(c))) + if (!new_fops) goto done; - old_fops = file->f_op; - file->f_op = new_fops; + replace_fops(file, new_fops); /* Curiouser and curiouser... NULL ->open() as "no device" ? */ if (file->f_op->open) err = file->f_op->open(inode, file); - if (err) { - fops_put(file->f_op); - file->f_op = fops_get(old_fops); - } - fops_put(old_fops); done: up_read(&minor_rwsem); return err; |