ath9k: fix a regression in touching power mode related registers (backport of r29341)

git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@29342 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/544-ath9k_fix_sleep_mode_reg.patch b/package/mac80211/patches/544-ath9k_fix_sleep_mode_reg.patch
new file mode 100644 (file)
index 0000000..2231b44
--- /dev/null
+++ b/package/mac80211/patches/544-ath9k_fix_sleep_mode_reg.patch
@@ -0,0 +1,12 @@
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1846,7 +1846,8 @@ static void ath9k_set_power_sleep(struct
+       }
+ 
+       /* Clear Bit 14 of AR_WA after putting chip into Full Sleep mode. */
+-      REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
++      if (AR_SREV_9300_20_OR_LATER(ah))
++              REG_WRITE(ah, AR_WA, ah->WARegVal & ~AR_WA_D3_L1_DISABLE);
+ }
+ 
+ /*