diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2013-01-09 16:16:52 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-03 18:24:41 -0600 |
| commit | fb259496950eaa9fa104ec6e570595ed21d66b07 (patch) | |
| tree | 07035db70af0eeeb48455a740dc9c4ce6d56bb4b | |
| parent | 657273897cd2f9b7964ac704c6e58fbe8295c64d (diff) | |
| download | linux-3.10-fb259496950eaa9fa104ec6e570595ed21d66b07.tar.gz linux-3.10-fb259496950eaa9fa104ec6e570595ed21d66b07.tar.bz2 linux-3.10-fb259496950eaa9fa104ec6e570595ed21d66b07.zip | |
ath9k: do not link receive buffers during flush
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 <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/recv.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 90b8527154e..039bac7e0c6 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -778,6 +778,7 @@ static struct ath_buf *ath_get_next_rx_buf(struct ath_softc *sc, return NULL; } + list_del(&bf->list); if (!bf->bf_mpdu) return bf; @@ -1966,14 +1967,15 @@ 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); |