ath9k: Enable WoW only for AR9462

The only card with which WoW has been tested and verified is
AR9462. Do not enable it for all cards since WoW is really quirky
and needs to be tested properly with each chip.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 31 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index a1630d1ee3c9..cc5a98b8d187 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -2003,7 +2003,6 @@ static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc *sc)
 {
         struct ath_hw *ah = sc->sc_ah;
         struct ath_common *common = ath9k_hw_common(ah);
-        struct ath9k_hw_capabilities *pcaps = &ah->caps;
         int pattern_count = 0;
         int i, byte_cnt;
         u8 dis_deauth_pattern[MAX_PATTERN_SIZE];
@@ -2073,36 +2072,9 @@ static void ath9k_wow_add_disassoc_deauth_pattern(struct ath_softc *sc)
 
         /* Create Disassociate pattern mask */
 
-        if (pcaps->hw_caps & ATH9K_HW_WOW_PATTERN_MATCH_EXACT) {
-
-                if (pcaps->hw_caps & ATH9K_HW_WOW_PATTERN_MATCH_DWORD) {
-                        /*
-                         * for AR9280, because of hardware limitation, the
-                         * first 4 bytes have to be matched for all patterns.
-                         * the mask for disassociation and de-auth pattern
-                         * matching need to enable the first 4 bytes.
-                         * also the duration field needs to be filled.
-                         */
-                        dis_deauth_mask[0] = 0xf0;
-
-                        /*
-                         * fill in duration field
-                         FIXME: what is the exact value ?
-                         */
-                        dis_deauth_pattern[2] = 0xff;
-                        dis_deauth_pattern[3] = 0xff;
-                } else {
-                        dis_deauth_mask[0] = 0xfe;
-                }
-
-                dis_deauth_mask[1] = 0x03;
-                dis_deauth_mask[2] = 0xc0;
-        } else {
-                dis_deauth_mask[0] = 0xef;
-                dis_deauth_mask[1] = 0x3f;
-                dis_deauth_mask[2] = 0x00;
-                dis_deauth_mask[3] = 0xfc;
-        }
+        dis_deauth_mask[0] = 0xfe;
+        dis_deauth_mask[1] = 0x03;
+        dis_deauth_mask[2] = 0xc0;
 
         ath_dbg(common, WOW, "Adding disassoc/deauth patterns for WoW\n");