diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2006-05-12 11:19:19 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-06-21 15:04:11 -0700 |
| commit | 59e29ed91cff90b27d393c7a3d3ac9c3fcaea7dd (patch) | |
| tree | 5003afaca5960954fe25a2fe6401f43fef48f8bb /drivers/usb/host/uhci-hcd.h | |
| parent | b1869000a60b0c72022811f24110a52d3e300b1e (diff) | |
[PATCH] UHCI: Remove non-iso TDs as they are used
This patch (as680) frees non-isochronous TDs as they are used, rather
than all at once when an URB is complete. Although not a terribly
important change in itself, it opens the door to a later enhancement
that will reduce storage requirements by allocating only a limited
number of TDs at any time for each endpoint queue.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/uhci-hcd.h')
| -rw-r--r-- | drivers/usb/host/uhci-hcd.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h index 8e577865049..3093ca25094 100644 --- a/drivers/usb/host/uhci-hcd.h +++ b/drivers/usb/host/uhci-hcd.h @@ -129,6 +129,7 @@ struct uhci_qh { struct list_head queue; /* Queue of urbps for this QH */ struct uhci_qh *skel; /* Skeleton for this QH */ struct uhci_td *dummy_td; /* Dummy TD to end the queue */ + struct uhci_td *post_td; /* Last TD completed */ unsigned int unlink_frame; /* When the QH was unlinked */ int state; /* QH_STATE_xxx; see above */ @@ -136,7 +137,7 @@ struct uhci_qh { unsigned int initial_toggle:1; /* Endpoint's current toggle value */ unsigned int needs_fixup:1; /* Must fix the TD toggle values */ - unsigned int is_stopped:1; /* Queue was stopped by an error */ + unsigned int is_stopped:1; /* Queue was stopped by error/unlink */ } __attribute__((aligned(16))); /* @@ -456,8 +457,6 @@ struct urb_priv { struct list_head td_list; unsigned fsbr : 1; /* URB turned on FSBR */ - unsigned short_transfer : 1; /* URB got a short transfer, no - * need to rescan */ }; |