ath9k: avoid accessing MRC registers on single-chain devices

They are not implemented, and accessing them might trigger errors

Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2013-08-13 12:33:28 +02:00 • committed by John W. Linville
commit a1c781bb20