--- a/drivers/net/wireless/ath/ath5k/initvals.c
+++ b/drivers/net/wireless/ath/ath5k/initvals.c
@@ -62,8 +62,14 @@ static const struct ath5k_ini ar5210_ini
 	{ AR5K_IMR,		0 },
 	{ AR5K_IER,		AR5K_IER_DISABLE },
 	{ AR5K_BSR,		0, AR5K_INI_READ },
+#if !defined(CONFIG_ATHEROS_AR71XX) && !defined(CONFIG_ATH79)
 	{ AR5K_TXCFG,		AR5K_DMASIZE_128B },
 	{ AR5K_RXCFG,		AR5K_DMASIZE_128B },
+#else
+	/* WAR for AR71xx PCI bug */
+	{ AR5K_TXCFG,		AR5K_DMASIZE_128B },
+	{ AR5K_RXCFG,		AR5K_DMASIZE_4B },
+#endif
 	{ AR5K_CFG,		AR5K_INIT_CFG },
 	{ AR5K_TOPS,		8 },
 	{ AR5K_RXNOFRM,		8 },
--- a/drivers/net/wireless/ath/ath5k/dma.c
+++ b/drivers/net/wireless/ath/ath5k/dma.c
@@ -854,10 +854,18 @@ ath5k_hw_dma_init(struct ath5k_hw *ah)
 	 * guess we can tweak it and see how it goes ;-)
 	 */
 	if (ah->ah_version != AR5K_AR5210) {
+#if !defined(CONFIG_ATHEROS_AR71XX) && !defined(CONFIG_ATH79)
 		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*/