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Workaround kernel BUG_ON panic caused by unexpected duplicate packets. 

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
This commit is contained in:
Zhu Yi 2005-08-05 17:17:35 +08:00 committed by James Ketrenos
parent 4f36f8088a
commit 87b016cb64
1 changed files with 4 additions and 2 deletions
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6
drivers/net/wireless/ipw2200.c
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@ -7696,7 +7696,6 @@ static inline int is_network_packet(struct ipw_priv *priv,
static inline int is_duplicate_packet(struct ipw_priv *priv, static inline int is_duplicate_packet(struct ipw_priv *priv,
struct ieee80211_hdr_4addr *header) struct ieee80211_hdr_4addr *header)
{ {
u16 fc = le16_to_cpu(header->frame_ctl);
u16 sc = le16_to_cpu(header->seq_ctl); u16 sc = le16_to_cpu(header->seq_ctl);
u16 seq = WLAN_GET_SEQ_SEQ(sc); u16 seq = WLAN_GET_SEQ_SEQ(sc);
u16 frag = WLAN_GET_SEQ_FRAG(sc); u16 frag = WLAN_GET_SEQ_FRAG(sc);
@ -7760,7 +7759,10 @@ static inline int is_duplicate_packet(struct ipw_priv *priv,
return 0; return 0;
drop: drop:
BUG_ON(!(fc & IEEE80211_FCTL_RETRY)); /* Comment this line now since we observed the card receives
* duplicate packets but the FCTL_RETRY bit is not set in the
* IBSS mode with fragmentation enabled.
BUG_ON(!(le16_to_cpu(header->frame_ctl) & IEEE80211_FCTL_RETRY)); */
return 1; return 1;
} }