Some of the Mikrotik R11e-2HPnD cards have EEPROM where is
flashed that a card has 3 chains, but actually all this cards
have only 2. This leads ath9k to write periodically into the logs:
'ath: phy0: Unable to reset channel, reset status -5' and
stations don't see that AP.
Mikrotik R11e-2HPnD is based on AR9582 chip.
Signed-off-by: Denis Kalashnikov <denis281089@xxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar9003_eeprom.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index b4885a700296..554a81400648 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3373,6 +3373,15 @@ static int
ar9300_eeprom_restore_internal(struct ath_hw *ah,
cptr -= (COMP_HDR_LEN + osize + COMP_CKSUM_LEN);
}
+ /**
+ * Fix firmware bug of some Mikrotik R11e-2HPnD cards (based on AR9582)
+ * that claim that they have 3 chains, but actually have only 2.
+ */
+ if (AR_SREV_9580(ah)) {
+ eep = (struct ar9300_eeprom *)mptr;
+ eep->baseEepHeader.txrxMask &= 0x33;
+ }
+
kfree(word);
return cptr;
--
2.23.0
