2010-09-16 14:38:27 +03:00
|
|
|
From 27ed5ec6924c17b76d65b697a162bafee7bd8e4e Mon Sep 17 00:00:00 2001
|
|
|
|
|
From: Helmut Schaa <helmut.schaa@googlemail.com>
|
|
|
|
|
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 <helmut.schaa@googlemail.com>
|
|
|
|
|
---
|
|
|
|
|
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
|
2010-11-12 00:39:12 +02:00
|
|
|
@@ -590,6 +590,10 @@ static void rt2800pci_kill_tx_queue(stru
|
2010-09-16 14:38:27 +03:00
|
|
|
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, (queue->qid == QID_AC_BE));
|
|
|
|
|
rt2x00_set_field32(®, WPDMA_RST_IDX_DTX_IDX1, (queue->qid == QID_AC_BK));
|
