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Commit e89f7690 authored by Larry Finger's avatar Larry Finger Committed by John W. Linville
Browse files

rtlwifi: Fix oops on rate-control failure 



When the rate-control indexing is incorrectly set up, mac80211 issues
a warning and returns NULL from the call to ieee80211_get_tx_rate().
When this happens, avoid a NULL pointer dereference.

Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent aa331df0

drivers/net/wireless/rtlwifi/base.c

+4 −1
Original line number Original line Diff line number Diff line
@@ -838,7 +838,10 @@ void rtl_get_tcb_desc(struct ieee80211_hw *hw, 
	__le16 fc = hdr->frame_control;

	__le16 fc = hdr->frame_control;





	txrate = ieee80211_get_tx_rate(hw, info);

	txrate = ieee80211_get_tx_rate(hw, info);

	if (txrate)

		tcb_desc->hw_rate = txrate->hw_value;

		tcb_desc->hw_rate = txrate->hw_value;

	else

		tcb_desc->hw_rate = 0;





	if (ieee80211_is_data(fc)) {

	if (ieee80211_is_data(fc)) {

		/*

		/*