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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-07-31 01:05:22 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-13 01:55:00 +0400 |
| commit | bdd016ba64d909329cb4bacacc8443901c00e112 (patch) | |
| tree | cf20440d7d613377b5e2b4cec9764f2dc9e04928 /include/linux/usb.h | |
| parent | 5b653c79c04c6b152b8dc7d18f8c8a7f77f4b235 (diff) | |
| download | linux-bdd016ba64d909329cb4bacacc8443901c00e112.tar.xz | |
USB: add ep->enable
This patch (as944) adds an explicit "enabled" field to the
usb_host_endpoint structure and uses it in place of the current
mechanism. This is merely a time-space tradeoff; it makes checking
whether URBs may be submitted to an endpoint simpler. The existing
mechanism is efficient when converting urb->pipe to an endpoint
pointer, but it's not so efficient when urb->ep is used instead.
As a side effect, the procedure for enabling an endpoint is now a
little more complicated. The ad-hoc inline code in usb.c and hub.c
for enabling ep0 is now replaced with calls to usb_enable_endpoint,
which is no longer static.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb.h')
| -rw-r--r-- | include/linux/usb.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h index 105e3e9362d0..818a1b4f737a 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -52,6 +52,7 @@ struct ep_device; * @ep_dev: ep_device for sysfs info * @extra: descriptors following this endpoint in the configuration * @extralen: how many bytes of "extra" are valid + * @enabled: URBs may be submitted to this endpoint * * USB requests are always queued to a given endpoint, identified by a * descriptor within an active interface in a given USB configuration. @@ -64,6 +65,7 @@ struct usb_host_endpoint { unsigned char *extra; /* Extra descriptors */ int extralen; + int enabled; }; /* host-side wrapper for one interface setting's parsed descriptors */ |