diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/hw.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/hw.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 4da5284c7773..839ba64c9e49 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1161,6 +1161,41 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type) rst_flags |= AR_RTC_RC_MAC_COLD; } + if (AR_SREV_9330(ah)) { + int npend = 0; + int i; + + /* AR9330 WAR: + * call external reset function to reset WMAC if: + * - doing a cold reset + * - we have pending frames in the TX queues + */ + + for (i = 0; i < AR_NUM_QCU; i++) { + npend = ath9k_hw_numtxpending(ah, i); + if (npend) + break; + } + + if (ah->external_reset && + (npend || type == ATH9K_RESET_COLD)) { + int reset_err = 0; + + ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET, + "reset MAC via external reset\n"); + + reset_err = ah->external_reset(); + if (reset_err) { + ath_err(ath9k_hw_common(ah), + "External reset failed, err=%d\n", + reset_err); + return false; + } + + REG_WRITE(ah, AR_RTC_RESET, 1); + } + } + REG_WRITE(ah, AR_RTC_RC, rst_flags); REGWRITE_BUFFER_FLUSH(ah); |