Commit 87b016cb authored by Zhu Yi's avatar Zhu Yi Committed by James Ketrenos
Browse files

Workaround kernel BUG_ON panic caused by unexpected duplicate packets. 



Signed-off-by: default avatarZhu Yi <yi.zhu@intel.com>
parent 4f36f808

drivers/net/wireless/ipw2200.c

+4 −2
Original line number Diff line number Diff line
@@ -7696,7 +7696,6 @@ static inline int is_network_packet(struct ipw_priv *priv, 
static inline int is_duplicate_packet(struct ipw_priv *priv,

				      struct ieee80211_hdr_4addr *header)

{

	u16 fc = le16_to_cpu(header->frame_ctl);

	u16 sc = le16_to_cpu(header->seq_ctl);

	u16 seq = WLAN_GET_SEQ_SEQ(sc);

	u16 frag = WLAN_GET_SEQ_FRAG(sc);
@@ -7760,7 +7759,10 @@ static inline int is_duplicate_packet(struct ipw_priv *priv, 
	return 0;



      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;

}