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path: root/drivers/usb/gadget/inode.c
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Diffstat (limited to 'drivers/usb/gadget/inode.c')
-rw-r--r--drivers/usb/gadget/inode.c51
1 files changed, 29 insertions, 22 deletions
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c
index 57bf24810f9b..aef0722b8f17 100644
--- a/drivers/usb/gadget/inode.c
+++ b/drivers/usb/gadget/inode.c
@@ -1038,7 +1038,7 @@ scan:
1038 /* ep0 can't deliver events when STATE_SETUP */ 1038 /* ep0 can't deliver events when STATE_SETUP */
1039 for (i = 0; i < n; i++) { 1039 for (i = 0; i < n; i++) {
1040 if (dev->event [i].type == GADGETFS_SETUP) { 1040 if (dev->event [i].type == GADGETFS_SETUP) {
1041 len = n = i + 1; 1041 len = i + 1;
1042 len *= sizeof (struct usb_gadgetfs_event); 1042 len *= sizeof (struct usb_gadgetfs_event);
1043 n = 0; 1043 n = 0;
1044 break; 1044 break;
@@ -1586,13 +1586,13 @@ gadgetfs_create_file (struct super_block *sb, char const *name,
1586static int activate_ep_files (struct dev_data *dev) 1586static int activate_ep_files (struct dev_data *dev)
1587{ 1587{
1588 struct usb_ep *ep; 1588 struct usb_ep *ep;
1589 struct ep_data *data;
1589 1590
1590 gadget_for_each_ep (ep, dev->gadget) { 1591 gadget_for_each_ep (ep, dev->gadget) {
1591 struct ep_data *data;
1592 1592
1593 data = kzalloc(sizeof(*data), GFP_KERNEL); 1593 data = kzalloc(sizeof(*data), GFP_KERNEL);
1594 if (!data) 1594 if (!data)
1595 goto enomem; 1595 goto enomem0;
1596 data->state = STATE_EP_DISABLED; 1596 data->state = STATE_EP_DISABLED;
1597 init_MUTEX (&data->lock); 1597 init_MUTEX (&data->lock);
1598 init_waitqueue_head (&data->wait); 1598 init_waitqueue_head (&data->wait);
@@ -1607,21 +1607,23 @@ static int activate_ep_files (struct dev_data *dev)
1607 1607
1608 data->req = usb_ep_alloc_request (ep, GFP_KERNEL); 1608 data->req = usb_ep_alloc_request (ep, GFP_KERNEL);
1609 if (!data->req) 1609 if (!data->req)
1610 goto enomem; 1610 goto enomem1;
1611 1611
1612 data->inode = gadgetfs_create_file (dev->sb, data->name, 1612 data->inode = gadgetfs_create_file (dev->sb, data->name,
1613 data, &ep_config_operations, 1613 data, &ep_config_operations,
1614 &data->dentry); 1614 &data->dentry);
1615 if (!data->inode) { 1615 if (!data->inode)
1616 usb_ep_free_request(ep, data->req); 1616 goto enomem2;
1617 kfree (data);
1618 goto enomem;
1619 }
1620 list_add_tail (&data->epfiles, &dev->epfiles); 1617 list_add_tail (&data->epfiles, &dev->epfiles);
1621 } 1618 }
1622 return 0; 1619 return 0;
1623 1620
1624enomem: 1621enomem2:
1622 usb_ep_free_request (ep, data->req);
1623enomem1:
1624 put_dev (dev);
1625 kfree (data);
1626enomem0:
1625 DBG (dev, "%s enomem\n", __FUNCTION__); 1627 DBG (dev, "%s enomem\n", __FUNCTION__);
1626 destroy_ep_files (dev); 1628 destroy_ep_files (dev);
1627 return -ENOMEM; 1629 return -ENOMEM;
@@ -1792,7 +1794,7 @@ static struct usb_gadget_driver probe_driver = {
1792 * 1794 *
1793 * After initialization, the device stays active for as long as that 1795 * After initialization, the device stays active for as long as that
1794 * $CHIP file is open. Events may then be read from that descriptor, 1796 * $CHIP file is open. Events may then be read from that descriptor,
1795 * such configuration notifications. More complex drivers will handle 1797 * such as configuration notifications. More complex drivers will handle
1796 * some control requests in user space. 1798 * some control requests in user space.
1797 */ 1799 */
1798 1800
@@ -2032,12 +2034,10 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent)
2032 NULL, &simple_dir_operations, 2034 NULL, &simple_dir_operations,
2033 S_IFDIR | S_IRUGO | S_IXUGO); 2035 S_IFDIR | S_IRUGO | S_IXUGO);
2034 if (!inode) 2036 if (!inode)
2035 return -ENOMEM; 2037 goto enomem0;
2036 inode->i_op = &simple_dir_inode_operations; 2038 inode->i_op = &simple_dir_inode_operations;
2037 if (!(d = d_alloc_root (inode))) { 2039 if (!(d = d_alloc_root (inode)))
2038 iput (inode); 2040 goto enomem1;
2039 return -ENOMEM;
2040 }
2041 sb->s_root = d; 2041 sb->s_root = d;
2042 2042
2043 /* the ep0 file is named after the controller we expect; 2043 /* the ep0 file is named after the controller we expect;
@@ -2045,21 +2045,28 @@ gadgetfs_fill_super (struct super_block *sb, void *opts, int silent)
2045 */ 2045 */
2046 dev = dev_new (); 2046 dev = dev_new ();
2047 if (!dev) 2047 if (!dev)
2048 return -ENOMEM; 2048 goto enomem2;
2049 2049
2050 dev->sb = sb; 2050 dev->sb = sb;
2051 if (!(inode = gadgetfs_create_file (sb, CHIP, 2051 if (!gadgetfs_create_file (sb, CHIP,
2052 dev, &dev_init_operations, 2052 dev, &dev_init_operations,
2053 &dev->dentry))) { 2053 &dev->dentry))
2054 put_dev(dev); 2054 goto enomem3;
2055 return -ENOMEM;
2056 }
2057 2055
2058 /* other endpoint files are available after hardware setup, 2056 /* other endpoint files are available after hardware setup,
2059 * from binding to a controller. 2057 * from binding to a controller.
2060 */ 2058 */
2061 the_device = dev; 2059 the_device = dev;
2062 return 0; 2060 return 0;
2061
2062enomem3:
2063 put_dev (dev);
2064enomem2:
2065 dput (d);
2066enomem1:
2067 iput (inode);
2068enomem0:
2069 return -ENOMEM;
2063} 2070}
2064 2071
2065/* "mount -t gadgetfs path /dev/gadget" ends up here */ 2072/* "mount -t gadgetfs path /dev/gadget" ends up here */