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openwrt/package/kernel/mac80211/patches/ath9k/354-ath9k-force-rx_clear-when-disabling-rx.patch
Ansuel Smith 3394af677c mac80211: split ath patch in dedicated subdir
The ath patch number is already large and adding other patch for ath11k
will add more confusion with the patch numbering.
Since the support of ath11k based device is imminent, prepare the mac80211
ath patch dir and split it in the dedicated ath5k, ath9k, ath10k and ath11k
(empty for now).

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
2021-06-04 22:44:40 +02:00

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Diff

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
@@ -678,13 +678,18 @@ 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);
}