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[PATCH] usbcore: Improve endpoint sysfs file handling

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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>
This commit is contained in:
Alan Stern
2005-10-25 15:56:06 -04:00
committed by Greg Kroah-Hartman
parent e52783206a
commit be69e5b190
2 changed files with 129 additions and 103 deletions
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5
include/linux/usb.h
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@ -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;