tree 0ad1f0be62d2da269ec0663ae8df60092e367772
parent 91608a1a9bcba2843b208d9af710e3a9e7660e4e
author Jason Wessel <jason.wessel@windriver.com> 1265938929 -0600
committer Jason Wessel <jason.wessel@windriver.com> 1265938929 -0600

ehci-dbgp: split PID register updates for IN and OUT pipes

This patch addresses two problems:

1) Bulk reads should always use the DATA0 for the pid, and the write
   PID should toggle between DATA0 and DATA1.  The fix is using
   dbgp_pid_write_update() and dbgp_pid_read_update().

2) The delay loop for waiting for a transaction was not long enough to
   always complete the initial handshake inside dbgp_wait_until_done().
   After the initial handshake the maximum delay length is never reached.

The combined result of these two changes allows for the removal of the
forced resynchronization where a bulk write was issued with a dummy
data payload only to get the device to start accepting data writes
again.

CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Eric Biederman <ebiederm@xmission.com>
CC: Yinghai Lu <yhlu.kernel@gmail.com>
CC: linux-usb@vger.kernel.org
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>