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rtlwifi: rtl8821ae: Fix possible array overrun

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The kbuild test robot reported a possible array overrun. The affected code
checks for overruns, but fails to take the steps necessary to fix them.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Larry Finger 2014-10-21 10:52:51 -05:00 committed by John W. Linville
parent 868caae3fe
commit d514aefb8c
1 changed files with 9 additions and 6 deletions
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15
drivers/net/wireless/rtlwifi/rtl8821ae/phy.c
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@ -1889,15 +1889,18 @@ static void _rtl8821ae_store_tx_power_by_rate(struct ieee80211_hw *hw,
struct rtl_phy *rtlphy = &rtlpriv->phy;
u8 rate_section = _rtl8821ae_get_rate_section_index(regaddr);
if (band != BAND_ON_2_4G && band != BAND_ON_5G)
if (band != BAND_ON_2_4G && band != BAND_ON_5G) {
RT_TRACE(rtlpriv, COMP_INIT, DBG_WARNING, "Invalid Band %d\n", band);
if (rfpath >= MAX_RF_PATH)
band = BAND_ON_2_4G;
}
if (rfpath >= MAX_RF_PATH) {
RT_TRACE(rtlpriv, COMP_INIT, DBG_WARNING, "Invalid RfPath %d\n", rfpath);
if (txnum >= MAX_RF_PATH)
rfpath = MAX_RF_PATH - 1;
}
if (txnum >= MAX_RF_PATH) {
RT_TRACE(rtlpriv, COMP_INIT, DBG_WARNING, "Invalid TxNum %d\n", txnum);
txnum = MAX_RF_PATH - 1;
}
rtlphy->tx_power_by_rate_offset[band][rfpath][txnum][rate_section] = data;
RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
"TxPwrByRateOffset[Band %d][RfPath %d][TxNum %d][RateSection %d] = 0x%x\n",