diff options
Diffstat (limited to 'ath9k-rx-dma-stop-check.patch')
| -rw-r--r-- | ath9k-rx-dma-stop-check.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/ath9k-rx-dma-stop-check.patch b/ath9k-rx-dma-stop-check.patch new file mode 100644 index 000000000..49a20d335 --- /dev/null +++ b/ath9k-rx-dma-stop-check.patch @@ -0,0 +1,42 @@ +From dfc1afd652976a77e8fcfb57866ad0f29b50d042 Mon Sep 17 00:00:00 2001 +From: "kernel-team@fedoraproject.org" <kernel-team@fedoraproject.org> +Date: Wed, 6 Feb 2013 09:57:47 -0500 +Subject: [PATCH] ath9k: rx dma stop check + +--- + drivers/net/wireless/ath/ath9k/mac.c | 12 +++++++++++- + 1 file changed, 11 insertions(+), 1 deletion(-) + +diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c +index 275205ab5f15..bb842623bdf6 100644 +--- a/drivers/net/wireless/ath/ath9k/mac.c ++++ b/drivers/net/wireless/ath/ath9k/mac.c +@@ -700,7 +700,7 @@ bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset) + { + #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 */ +@@ -730,6 +730,16 @@ bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset) + } + + 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, +-- +1.9.3 + |