From 716ca530e1c4515d8683c9d5be3d56b301758b66 Mon Sep 17 00:00:00 2001
From: James <>
Date: Wed, 4 Nov 2015 11:49:21 +0000
Subject: trunk-47381

---
 .../patches/541-ath9k_rx_dma_stop_check.patch      | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 package/kernel/mac80211/patches/541-ath9k_rx_dma_stop_check.patch

(limited to 'package/kernel/mac80211/patches/541-ath9k_rx_dma_stop_check.patch')

diff --git a/package/kernel/mac80211/patches/541-ath9k_rx_dma_stop_check.patch b/package/kernel/mac80211/patches/541-ath9k_rx_dma_stop_check.patch
new file mode 100644
index 0000000..3c5e9f5
--- /dev/null
+++ b/package/kernel/mac80211/patches/541-ath9k_rx_dma_stop_check.patch
@@ -0,0 +1,28 @@
+--- a/drivers/net/wireless/ath/ath9k/mac.c
++++ b/drivers/net/wireless/ath/ath9k/mac.c
+@@ -695,7 +695,7 @@ bool ath9k_hw_stopdmarecv(struct ath_hw
+ {
+ #define AH_RX_STOP_DMA_TIMEOUT 10000   /* usec */
+ 	struct ath_common *common = ath9k_hw_common(ah);
+-	u32 mac_status, last_mac_status = 0;
++	u32 mac_status = 0, last_mac_status = 0;
+ 	int i;
+ 
+ 	/* Enable access to the DMA observation bus */
+@@ -725,6 +725,16 @@ bool ath9k_hw_stopdmarecv(struct ath_hw
+ 	}
+ 
+ 	if (i == 0) {
++		if (!AR_SREV_9300_20_OR_LATER(ah) &&
++		    (mac_status & 0x700) == 0) {
++			/*
++			 * DMA is idle but the MAC is still stuck
++			 * processing events
++			 */
++			*reset = true;
++			return true;
++		}
++
+ 		ath_err(common,
+ 			"DMA failed to stop in %d ms AR_CR=0x%08x AR_DIAG_SW=0x%08x DMADBG_7=0x%08x\n",
+ 			AH_RX_STOP_DMA_TIMEOUT / 1000,
-- 
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