+--- a/drivers/net/wireless/ath/ath5k/dma.c
++++ b/drivers/net/wireless/ath/ath5k/dma.c
+@@ -787,10 +787,18 @@ void ath5k_hw_dma_init(struct ath5k_hw *
+ * guess we can tweak it and see how it goes ;-)
+ */
+ if (ah->ah_version != AR5K_AR5210) {
++#ifndef CONFIG_ATHEROS_AR71XX
+ AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
+ AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
+ AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
+ AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_128B);
++#else
++ /* WAR for AR71xx PCI bug */
++ AR5K_REG_WRITE_BITS(ah, AR5K_TXCFG,
++ AR5K_TXCFG_SDMAMR, AR5K_DMASIZE_128B);
++ AR5K_REG_WRITE_BITS(ah, AR5K_RXCFG,
++ AR5K_RXCFG_SDMAMW, AR5K_DMASIZE_4B);
++#endif
+ }
+
+ /* Pre-enable interrupts on 5211/5212*/