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path: root/drivers/usb/core/file.c
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Diffstat (limited to 'drivers/usb/core/file.c')
-rw-r--r--drivers/usb/core/file.c24
1 files changed, 8 insertions, 16 deletions
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index 7421888087a3..ea337a718cc1 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -8,7 +8,7 @@
* (C) Copyright Deti Fliegl 1999 (new USB architecture)
* (C) Copyright Randy Dunlap 2000
* (C) Copyright David Brownell 2000-2001 (kernel hotplug, usb_device_id,
- more docs, etc)
+ * more docs, etc)
* (C) Copyright Yggdrasil Computing, Inc. 2000
* (usb_device_id matching changes by Adam J. Richter)
* (C) Copyright Greg Kroah-Hartman 2002-2003
@@ -27,29 +27,21 @@
static const struct file_operations *usb_minors[MAX_USB_MINORS];
static DECLARE_RWSEM(minor_rwsem);
-static int usb_open(struct inode * inode, struct file * file)
+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);
+ err = file->f_op->open(inode, file);
done:
up_read(&minor_rwsem);
return err;
@@ -166,7 +158,7 @@ int usb_register_dev(struct usb_interface *intf,
char *temp;
#ifdef CONFIG_USB_DYNAMIC_MINORS
- /*
+ /*
* We don't care what the device tries to start at, we want to start
* at zero to pack the devices into the smallest available space with
* no holes in the minor range.