This program is free software; you can redistribute it and/or modify it
under the terms and conditions of the GNU General Public License,
version 2, as published by the Free Software Foundation.
This program is distributed in the hope it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
Signed-off-by: Kamal Mostafa <email address hidden>
Acked-by: Brad Figg <email address hidden>
Acked-by: Tim Gardner <email address hidden>
Signed-off-by: Kamal Mostafa <email address hidden>
BugLink: http://bugs.launchpad.net/bugs/1635594
Signed-off-by: Andy Whitcroft <email address hidden>
7b66e0f...
by
Greg Kroah-Hartman <email address hidden>
The req_canceled() callback is used by tpm_transmit() periodically to
check whether the request has been canceled while it is receiving a
response from the TPM.
The TPM_CRB_CTRL_CANCEL register was cleared already in the crb_cancel
callback, which has two consequences:
* Cancel might not happen.
* req_canceled() always returns zero.
A better place to clear the register is when starting to send a new
command. The behavior of TPM_CRB_CTRL_CANCEL is described in the
section 5.5.3.6 of the PTP specification.
