wireless-testing commit 891db8811 needed in -stable

John, plese push upstream and cc stable (2.6.38.5+, 2.6.39+) commit:

commit 891db88112b604db054d9575d200271ad97634a4

Author: Wey-Yi Guy <[email protected]>
Date:   Fri May 27 08:40:24 2011 -0700

iwlagn: send tx power command if defer cause by RXON not match

as it fix regresion (possible tx problems) introduced by my commit:

commit f844a709a7d8f8be61a571afc31dfaca9e779621

Author: Stanislaw Gruszka <[email protected]>
Date:   Fri Jan 28 16:47:44 2011 +0100

iwlwifi: do not set tx power when channel is changing

Thanks
Stanislaw