tree 1001bd0ec9f66cdc6a056f9373297bff327933eb
parent 5e2f75b8993a0d83d469388b50716dd5551f2eb4
author Wey-Yi Guy <wey-yi.w.guy@intel.com> 1266623252 -0800
committer John W. Linville <linville@tuxdriver.com> 1266855350 -0500

iwlwifi: error checking for number of tfds in queue

When receive reply_tx and ready to decrement the count for number of
tfds in queue, do error checking to prevent error condition and
tfds_in_queue become negative number.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>