Re: ath: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020DMADBG_7=0x00008040
From: Justin P. Mattock
Date: Fri Apr 06 2012 - 12:40:26 EST
On 03/26/2012 07:17 PM, Sujith Manoharan wrote:
Justin P. Mattock wrote:
I would have to say this patch above does get rid of this crash I was
seeing. as a quick test I simply connect to a WPA network, then connect
to an open network going back and forth triggers this freeze for me
after applying this I am able to toggle back and forth without a freeze.
Thanks for verifying.
Sujith
From going through the warning message I was playing around and am
looking at: AH_UNPLUGGED .. seems if I remove this from the code I have
not seen this warning message.
is there something wrong with AH_UNPLUGGED = 0x2 ?
is this the wrong address(0x2)?
the patch that I was using is:
From ea8a7d6ecf8b0706f3f0521cd22cc359b20b9373 Mon Sep 17 00:00:00 2001
From: "Justin P. Mattock" <justinmattock@xxxxxxxxx>
Date: Sun, 25 Mar 2012 21:53:31 -0700
Subject: [PATCH] ath_test
Signed-off-by: Justin P. Mattock <justinmattock@xxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/recv.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/recv.c
b/drivers/net/wireless/ath/ath9k/recv.c
index f4ae3ba..d887cee 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -523,8 +523,7 @@ bool ath_stoprecv(struct ath_softc *sc)
sc->rx.rxlink = NULL;
spin_unlock_bh(&sc->rx.rxbuflock);
- if (!(ah->ah_flags & AH_UNPLUGGED) &&
- unlikely(!stopped)) {
+ if (!(ah->ah_flags) && unlikely(!stopped)) {
ath_err(ath9k_hw_common(sc->sc_ah),
"Could not stop RX, we could be "
"confusing the DMA engine when we start RX up\n");
--
1.7.5.4
let me know what you think!
Justin P. Mattock
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