| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From: Felix Fietkau <nbd@openwrt.org> |
| 2 | Date: Sun, 7 Jun 2015 13:53:35 +0200 |
| 3 | Subject: [PATCH] ath9k: force rx_clear when disabling rx |
| 4 | |
| 5 | This makes stopping Rx more reliable and should reduce the frequency of |
| 6 | Rx related DMA stop warnings. Don't use rx_clear in TX99 mode. |
| 7 | |
| 8 | Cc: stable@vger.kernel.org |
| 9 | Signed-off-by: Felix Fietkau <nbd@nbd.name> |
| 10 | Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com> |
| 11 | --- |
| 12 | |
| 13 | --- a/drivers/net/wireless/ath/ath9k/mac.c |
| 14 | +++ b/drivers/net/wireless/ath/ath9k/mac.c |
| 15 | @@ -678,13 +678,18 @@ void ath9k_hw_startpcureceive(struct ath |
| 16 | |
| 17 | ath9k_ani_reset(ah, is_scanning); |
| 18 | |
| 19 | - REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT)); |
| 20 | + REG_CLR_BIT(ah, AR_DIAG_SW, |
| 21 | + AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT | AR_DIAG_FORCE_RX_CLEAR); |
| 22 | } |
| 23 | EXPORT_SYMBOL(ath9k_hw_startpcureceive); |
| 24 | |
| 25 | void ath9k_hw_abortpcurecv(struct ath_hw *ah) |
| 26 | { |
| 27 | - REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS); |
| 28 | + u32 reg = AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT; |
| 29 | + |
| 30 | + if (!IS_ENABLED(CPTCFG_ATH9K_TX99)) |
| 31 | + reg |= AR_DIAG_FORCE_RX_CLEAR; |
| 32 | + REG_SET_BIT(ah, AR_DIAG_SW, reg); |
| 33 | |
| 34 | ath9k_hw_disable_mib_counters(ah); |
| 35 | } |