mac80211: update to wireless-testing 2010-11-16
[openwrt/svn-archive/archive.git] / package / mac80211 / patches / 601-rt2x00-fix-hang-on-ifdown.patch
1 From 27ed5ec6924c17b76d65b697a162bafee7bd8e4e Mon Sep 17 00:00:00 2001
2 From: Helmut Schaa <helmut.schaa@googlemail.com>
3 Date: Mon, 21 Jun 2010 10:03:05 +0200
4 Subject: [PATCH] rt2x00: fix rt2800pci hang on ifdown
5
6 rt2800pci hangs the system on rt305x SoC devices on ifdown. Work around
7 this issue by disabling TX DMA prior to resetting the TX queue indices.
8
9 This patch is not suitable for upstream inclusion but is just meant as
10 a workaround until a proper solution is implemented.
11
12 Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
13 ---
14 drivers/net/wireless/rt2x00/rt2800pci.c | 4 ++++
15 1 files changed, 4 insertions(+), 0 deletions(-)
16
17 --- a/drivers/net/wireless/rt2x00/rt2800pci.c
18 +++ b/drivers/net/wireless/rt2x00/rt2800pci.c
19 @@ -592,6 +592,10 @@ static void rt2800pci_kill_tx_queue(stru
20 return;
21 }
22
23 + rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, &reg);
24 + rt2x00_set_field32(&reg, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0);
25 + rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg);
26 +
27 rt2800_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
28 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, (queue->qid == QID_AC_BE));
29 rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, (queue->qid == QID_AC_BK));