This is a note to let you know that I've just added the patch titled
ath9k: do not link receive buffers during flush
to the 3.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ath9k-do-not-link-receive-buffers-during-flush.patch
and it can be found in the queue-3.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From a3dc48e82bb146ef11cf75676c8410c1df29b0c4 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <n...@openwrt.org>
Date: Wed, 9 Jan 2013 16:16:52 +0100
Subject: ath9k: do not link receive buffers during flush
From: Felix Fietkau <n...@openwrt.org>
commit a3dc48e82bb146ef11cf75676c8410c1df29b0c4 upstream.
On AR9300 the rx FIFO needs to be empty during reset to ensure that no
further DMA activity is generated, otherwise it might lead to memory
corruption issues.
Signed-off-by: Felix Fietkau <n...@openwrt.org>
Signed-off-by: John W. Linville <linvi...@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/net/wireless/ath/ath9k/recv.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -744,6 +744,7 @@ static struct ath_buf *ath_get_next_rx_b
return NULL;
}
+ list_del(&bf->list);
if (!bf->bf_mpdu)
return bf;
@@ -1251,14 +1252,15 @@ requeue_drop_frag:
sc->rx.frag = NULL;
}
requeue:
+ list_add_tail(&bf->list, &sc->rx.rxbuf);
+ if (flush)
+ continue;
+
if (edma) {
- list_add_tail(&bf->list, &sc->rx.rxbuf);
ath_rx_edma_buf_link(sc, qtype);
} else {
- list_move_tail(&bf->list, &sc->rx.rxbuf);
ath_rx_buf_link(sc, bf);
- if (!flush)
- ath9k_hw_rxena(ah);
+ ath9k_hw_rxena(ah);
}
} while (1);
Patches currently in stable-queue which might be from n...@openwrt.org are
queue-3.7/ath9k-fix-double-free-bug-on-beacon-generate-failure.patch
queue-3.7/ath9k-do-not-link-receive-buffers-during-flush.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
