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staging: rtl8192u: r8192U_core: Fix driver_info dereference as a null pointer 

Fix possible use of use of driver_info as a null pointer in
query_rxdesc_status()
This could happen if stats->RxIs40MHzPacket still has the
default value of zero.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rickard Strandqvist 2015-02-07 15:56:10 +01:00 committed by Greg Kroah-Hartman
parent 1b08872e59
commit 535f2e7df8
1 changed files with 3 additions and 6 deletions
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9
drivers/staging/rtl8192u/r8192U_core.c
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@ -4476,13 +4476,10 @@ static void query_rxdesc_status(struct sk_buff *skb,
skb_pull(skb, stats->RxBufShift + stats->RxDrvInfoSize);
}
/* for debug 2008.5.29 */
//added by vivi, for MP, 20080108
stats->RxIs40MHzPacket = driver_info->BW;
if (stats->RxDrvInfoSize != 0)
if (driver_info) {
stats->RxIs40MHzPacket = driver_info->BW;
TranslateRxSignalStuff819xUsb(skb, stats, driver_info);
}
}
static void rtl8192_rx_nomal(struct sk_buff *skb)