tree bcd25bd2b13668ea5ed95c15a6bb5593bcac5362
parent afaf6b5742f85bab46232faae97fdd1493061173
author Emmanuel Grumbach <emmanuel.grumbach@intel.com> 1310139970 -0700
committer John W. Linville <linville@tuxdriver.com> 1310410920 -0400

iwlagn: add an API to free the TX context

Tx free functions move to the transport layer. Unify the functions that deal with tx queues and cmd queue.

Since the CMD queue is not fully allocated, but uses the q->n_bd / q->window trick, the release flow of TX queue and CMD queue was different.
iwlagn_txq_free_tfd receives now the index of the TFD to be freed, which allows to unify the release flow for all the queues.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>