[PATCH 3.16.y-ckt 055/185] ath9k: fix DMA stop sequence for AR9003+

3.16.7-ckt15 -stable review patch. If anyone has any objections, please let me know. -- From: Felix Fietkau commit 300f77c08ded96d33f492aaa02549103852f0c12 upstream. AR93xx and newer needs to stop rx before tx to avoid getting the DMA engine or MAC into a stuck state. This

[PATCH 3.16.y-ckt 055/185] ath9k: fix DMA stop sequence for AR9003+

3.16.7-ckt15 -stable review patch. If anyone has any objections, please let me know. -- From: Felix Fietkau n...@openwrt.org commit 300f77c08ded96d33f492aaa02549103852f0c12 upstream. AR93xx and newer needs to stop rx before tx to avoid getting the DMA engine or MAC into a