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- From: Felix Fietkau <nbd@openwrt.org>
- Date: Sun, 7 Jun 2015 13:53:35 +0200
- Subject: [PATCH] ath9k: force rx_clear when disabling rx
- This makes stopping Rx more reliable and should reduce the frequency of
- Rx related DMA stop warnings. Don't use rx_clear in TX99 mode.
- Cc: stable@vger.kernel.org
- Signed-off-by: Felix Fietkau <nbd@nbd.name>
- Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
- ---
- --- a/drivers/net/wireless/ath/ath9k/mac.c
- +++ b/drivers/net/wireless/ath/ath9k/mac.c
- @@ -677,13 +677,18 @@ void ath9k_hw_startpcureceive(struct ath
-
- ath9k_ani_reset(ah, is_scanning);
-
- - REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
- + REG_CLR_BIT(ah, AR_DIAG_SW,
- + AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT | AR_DIAG_FORCE_RX_CLEAR);
- }
- EXPORT_SYMBOL(ath9k_hw_startpcureceive);
-
- void ath9k_hw_abortpcurecv(struct ath_hw *ah)
- {
- - REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_ABORT | AR_DIAG_RX_DIS);
- + u32 reg = AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT;
- +
- + if (!IS_ENABLED(CPTCFG_ATH9K_TX99))
- + reg |= AR_DIAG_FORCE_RX_CLEAR;
- + REG_SET_BIT(ah, AR_DIAG_SW, reg);
-
- ath9k_hw_disable_mib_counters(ah);
- }
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