USB: add reset endpoint operations

Wireless USB endpoint state has a sequence number and a current
window and not just a single toggle bit.  So allow HCDs to provide a
endpoint_reset method and call this or clear the software toggles as
required (after a clear halt, set configuration etc.).

usb_settoggle() and friends are then HCD internal and are moved into
core/hcd.h and all device drivers call usb_reset_endpoint() instead.

If the device endpoint state has been reset (with a clear halt) but
the host endpoint state has not then subsequent data transfers will
not complete. The device will only work again after it is reset or
disconnected.

Signed-off-by: David Vrabel <david.vrabel@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 3 deletions

diff --git a/drivers/usb/storage/transport.c b/drivers/usb/storage/transport.c
index 49aedb36dc19..fcb320217218 100644
--- a/drivers/usb/storage/transport.c
+++ b/drivers/usb/storage/transport.c
@@ -247,10 +247,8 @@ int usb_stor_clear_halt(struct us_data *us, unsigned int pipe)
                 USB_ENDPOINT_HALT, endp,
                 NULL, 0, 3*HZ);
 
-        /* reset the endpoint toggle */
         if (result >= 0)
-                usb_settoggle(us->pusb_dev, usb_pipeendpoint(pipe),
-                                usb_pipeout(pipe), 0);
+                usb_reset_endpoint(us->pusb_dev, endp);
 
         US_DEBUGP("%s: result = %d\n", __func__, result);
         return result;