path: root/drivers/usb/host/ehci.h
diff options
authorAlan Stern <stern@rowland.harvard.edu>2009-06-29 10:47:30 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2009-07-12 15:16:39 -0700
commit914b701280a76f96890ad63eb0fa99bf204b961c (patch)
tree9373723da74f660aa667da000301c191b1929bd8 /drivers/usb/host/ehci.h
parentcb88a1b887bb8908f6e00ce29e893ea52b074940 (diff)
USB: EHCI: use the new clear_tt_buffer interface
This patch (as1256) changes ehci-hcd and all the other drivers in the EHCI family to make use of the new clear_tt_buffer callbacks. When a Clear-TT-Buffer request is in progress for a QH, the QH is not allowed to be linked into the async schedule until the request is finished. At that time, if there are any URBs queued for the QH, it is linked into the async schedule. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 90ad3395bb2..2bfff30f470 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -354,7 +354,9 @@ struct ehci_qh {
unsigned short period; /* polling interval */
unsigned short start; /* where polling starts */
#define NO_FRAME ((unsigned short)~0) /* pick new start */
struct usb_device *dev; /* access to TT */
+ unsigned clearing_tt:1; /* Clear-TT-Buf in progress */
} __attribute__ ((aligned (32)));