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usbcore: fix endpoint device creation

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This patch (as800) straightens out the USB endpoint class device
creation routine, fixing a refcount bug in the process.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2006-10-10 11:56:26 -04:00 committed by Greg Kroah-Hartman
parent c40fd5ea56
commit d5477c1111
1 changed files with 8 additions and 10 deletions
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18
drivers/usb/core/endpoint.c
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@ -223,7 +223,7 @@ int usb_create_ep_files(struct device *parent,
ep_dev = kzalloc(sizeof(*ep_dev), GFP_KERNEL);
if (!ep_dev) {
retval = -ENOMEM;
goto exit;
goto error_alloc;
}
/* fun calculation to determine the minor of this endpoint */
@ -241,33 +241,31 @@ int usb_create_ep_files(struct device *parent,
retval = device_register(&ep_dev->dev);
if (retval)
goto error;
goto error_register;
retval = sysfs_create_group(&ep_dev->dev.kobj, &ep_dev_attr_grp);
if (retval)
goto error_group;
endpoint->ep_dev = ep_dev;
/* create the symlink to the old-style "ep_XX" directory */
sprintf(name, "ep_%02x", endpoint->desc.bEndpointAddress);
retval = sysfs_create_link(&parent->kobj,
&endpoint->ep_dev->dev.kobj, name);
retval = sysfs_create_link(&parent->kobj, &ep_dev->dev.kobj, name);
if (retval)
goto error_link;
exit:
endpoint->ep_dev = ep_dev;
return retval;
error_link:
sysfs_remove_group(&ep_dev->dev.kobj, &ep_dev_attr_grp);
error_group:
device_unregister(&ep_dev->dev);
endpoint->ep_dev = NULL;
destroy_endpoint_class();
return retval;
error:
error_register:
kfree(ep_dev);
error_alloc:
destroy_endpoint_class();
exit:
return retval;
}