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staging: r8712u: fix potential NULL pointer dereference in r871x_wps_start()

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The dereference should be moved below the NULL test.

dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wei Yongjun 2012-10-08 08:43:45 +08:00 committed by Greg Kroah-Hartman
parent a5e0f69c98
commit 605fba82a2
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/rtl8712/rtl871x_ioctl_linux.c
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@ -2110,10 +2110,10 @@ static int r871x_wps_start(struct net_device *dev,
struct iw_point *pdata = &wrqu->data;
u32 u32wps_start = 0;
if (copy_from_user((void *)&u32wps_start, pdata->pointer, 4))
return -EFAULT;
if ((padapter->bDriverStopped) || (pdata == NULL))
return -EINVAL;
if (copy_from_user((void *)&u32wps_start, pdata->pointer, 4))
return -EFAULT;
if (u32wps_start == 0)
u32wps_start = *extra;
if (u32wps_start == 1) /* WPS Start */