From 24f82abcc867ef5cc8100dc9754fcf5a34c3aeec Mon Sep 17 00:00:00 2001 From: nbd Date: Thu, 16 Sep 2010 11:40:04 +0000 Subject: [PATCH] rt2800pci: add back ifdown hang workaround from r23078 git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@23079 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- .../601-rt2x00-fix-hang-on-ifdown.patch | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 package/mac80211/patches/601-rt2x00-fix-hang-on-ifdown.patch diff --git a/package/mac80211/patches/601-rt2x00-fix-hang-on-ifdown.patch b/package/mac80211/patches/601-rt2x00-fix-hang-on-ifdown.patch new file mode 100644 index 000000000..5d6afc5df --- /dev/null +++ b/package/mac80211/patches/601-rt2x00-fix-hang-on-ifdown.patch @@ -0,0 +1,29 @@ +From 27ed5ec6924c17b76d65b697a162bafee7bd8e4e Mon Sep 17 00:00:00 2001 +From: Helmut Schaa +Date: Mon, 21 Jun 2010 10:03:05 +0200 +Subject: [PATCH] rt2x00: fix rt2800pci hang on ifdown + +rt2800pci hangs the system on rt305x SoC devices on ifdown. Work around +this issue by disabling TX DMA prior to resetting the TX queue indices. + +This patch is not suitable for upstream inclusion but is just meant as +a workaround until a proper solution is implemented. + +Signed-off-by: Helmut Schaa +--- + drivers/net/wireless/rt2x00/rt2800pci.c | 4 ++++ + 1 files changed, 4 insertions(+), 0 deletions(-) + +--- a/drivers/net/wireless/rt2x00/rt2800pci.c ++++ b/drivers/net/wireless/rt2x00/rt2800pci.c +@@ -661,6 +661,10 @@ static void rt2800pci_kill_tx_queue(stru + return; + } + ++ rt2800_register_read(rt2x00dev, WPDMA_GLO_CFG, ®); ++ rt2x00_set_field32(®, WPDMA_GLO_CFG_ENABLE_TX_DMA, 0); ++ rt2800_register_write(rt2x00dev, WPDMA_GLO_CFG, reg); ++ + rt2800_register_read(rt2x00dev, WPDMA_RST_IDX, ®); + rt2x00_set_field32(®, WPDMA_RST_IDX_DTX_IDX0, (qid == QID_AC_BE)); + rt2x00_set_field32(®, WPDMA_RST_IDX_DTX_IDX1, (qid == QID_AC_BK));