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authorZhu Yi <yi.zhu@intel.com>2008-11-27 13:42:20 +0800
committerJohn W. Linville <linville@tuxdriver.com>2008-12-05 09:18:35 -0500
commitb8ddafd759e356c839774a8b87011b768deb53b3 (patch)
tree9913a6a2510c70b2ba6a61f84f1d9384731df491
parent40a9a8299116297429298e8fcee08235134883f7 (diff)
ipw2200: fix netif_*_queue() removal regression
In "ipw2200: Call netif_*_queue() interfaces properly", netif_stop_queue() and netif_wake_queue() were removed with the reason "netif_carrier_{on,off}() handles starting and stopping packet flow into the driver". The patch also removes a valid condition check that ipw_tx_skb() cannot be called if device is not in STATUS_ASSOCIATED state. But netif_carrier_off() doesn't guarantee netdev->hard_start_xmit won't be called because linkwatch event is handled in a delayed workqueue. This caused a kernel oops reported by Frank Seidel: https://bugzilla.novell.com/show_bug.cgi?id=397390 This patch fixes the problem by moving the STATUS_ASSOCIATED check back to ipw_tx_skb(). It also adds a missing netif_carrier_off() call to ipw_disassociate(). Signed-off-by: Zhu Yi <yi.zhu@intel.com> Signed-off-by: Chatre, Reinette <reinette.chatre@intel.com> Tested-by: Frank Seidel <fseidel@suse.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ipw2200.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index dcce3542d5a..7a9f901d4ff 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -3897,6 +3897,7 @@ static int ipw_disassociate(void *data)
if (!(priv->status & (STATUS_ASSOCIATED | STATUS_ASSOCIATING)))
return 0;
ipw_send_disassociate(data, 0);
+ netif_carrier_off(priv->net_dev);
return 1;
}
@@ -10190,6 +10191,9 @@ static int ipw_tx_skb(struct ipw_priv *priv, struct ieee80211_txb *txb,
u16 remaining_bytes;
int fc;
+ if (!(priv->status & STATUS_ASSOCIATED))
+ goto drop;
+
hdr_len = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
switch (priv->ieee->iw_mode) {
case IW_MODE_ADHOC: