From 10cff29af6ae12725d4cb338abb5768e139b808a Mon Sep 17 00:00:00 2001
From: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Date: Wed, 3 Apr 2013 08:02:14 +0200
Subject: [PATCH] NFC: pn533: Add pn533_abort_cmd procedure

pn533_abort_cmd() aborts last command sent to the controller
and cancels already requested urb.

As ACR122U does not support any mechanism (as ACK for standard
PN533) which aborts last command this cannot be issued for this
device. Otherwise, acr122u will behave in an unstable way.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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