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rtlwifi: rtl8192cu: Fix error in pointer arithmetic

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An error in calculating the offset in an skb causes the driver to read
essential device info from the wrong locations. The main effect is that
automatic gain calculations are nonsense.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> [2.6.39+]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Mark Cave-Ayland 2013-10-08 10:18:20 -05:00 committed by John W. Linville
parent c380a1fda5
commit 9473ca6e92
1 changed files with 2 additions and 1 deletions
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3
drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
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@ -343,7 +343,8 @@ bool rtl92cu_rx_query_desc(struct ieee80211_hw *hw,
(bool)GET_RX_DESC_PAGGR(pdesc));
rx_status->mactime = GET_RX_DESC_TSFL(pdesc);
if (phystatus) {
p_drvinfo = (struct rx_fwinfo_92c *)(pdesc + RTL_RX_DESC_SIZE);
p_drvinfo = (struct rx_fwinfo_92c *)(skb->data +
stats->rx_bufshift);
rtl92c_translate_rx_signal_stuff(hw, skb, stats, pdesc,
p_drvinfo);
}