[PATCH] usbcore: Improve endpoint sysfs file handling

This revised patch (as587b) improves the implementation of USB endpoint
sysfs files.  Instead of storing a whole bunch of attributes for every
single endpoint, each endpoint now gets its own kobject and they can
share a static list of attributes.  The number of extra fields added to
struct usb_host_endpoint has been reduced from 4 to 1.

The bEndpointAddress field is retained even though it is redundant (it
repeats the same information as the attributes' directory name).  The
code avoids calling kobject_register, to prevent generating unwanted
hotplug events.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 4 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index a2d923fd54f9..465ff4585ca5 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -57,10 +57,7 @@ struct usb_host_endpoint {
         struct usb_endpoint_descriptor  desc;
         struct list_head                urb_list;
         void                            *hcpriv;
-        char                            *attr_name;
-        struct attribute_group          *attr_group;
-        struct attribute                **attrs;
-        int                             num_attrs;
+        struct kobject                  *kobj;  /* For sysfs info */
 
         unsigned char *extra;   /* Extra descriptors */
         int extralen;