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Date: Wed, 12 Feb 2014 16:14:35 -0600
From: Larry Finger <Larry.Finger@...inger.net>
To: gregkh@...uxfoundation.org
Cc: netdev@...r.kernel.org, devel@...verdev.osuosl.org,
Larry Finger <Larry.Finger@...inger.net>
Subject: [PATCH] staging: r8188eu: Fix more Smatch warnings and errors
After updating Smatch, the following new errors and warnings are reported:
drivers/staging/rtl8188eu/core/rtw_recv.c:368 recvframe_chkmic() warn: variable dereferenced before check 'psecuritypriv' (see line 364)
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:2642 rtw_wps_start() warn: variable dereferenced before check 'pdata' (see line 2636)
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:4461 rtw_dbg_port() error: we previously assumed 'pregpriv' could be null (see line 4453)
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c:4473 rtw_dbg_port() error: we previously assumed 'pregpriv' could be null (see line 4469)
Signed-off-by: Larry Finger <Larry.Finger@...inger.net>
---
drivers/staging/rtl8188eu/core/rtw_recv.c | 7 +++----
drivers/staging/rtl8188eu/os_dep/ioctl_linux.c | 18 +++++++++---------
2 files changed, 12 insertions(+), 13 deletions(-)
diff --git a/drivers/staging/rtl8188eu/core/rtw_recv.c b/drivers/staging/rtl8188eu/core/rtw_recv.c
index 35397bd..bc5baf2 100644
--- a/drivers/staging/rtl8188eu/core/rtw_recv.c
+++ b/drivers/staging/rtl8188eu/core/rtw_recv.c
@@ -361,16 +361,15 @@ static int recvframe_chkmic(struct adapter *adapter, union recv_frame *precvfra
/* calculate mic code */
if (stainfo != NULL) {
if (IS_MCAST(prxattrib->ra)) {
- mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
-
- RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
-
if (!psecuritypriv) {
res = _FAIL;
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n"));
DBG_88E("\n recvframe_chkmic:didn't install group key!!!!!!!!!!\n");
goto exit;
}
+ mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
+
+ RT_TRACE(_module_rtl871x_recv_c_, _drv_info_, ("\n recvframe_chkmic: bcmc key\n"));
} else {
mickey = &stainfo->dot11tkiprxmickey.skey[0];
RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("\n recvframe_chkmic: unicast key\n"));
diff --git a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
index 7de8139..3691007 100644
--- a/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/rtl8188eu/os_dep/ioctl_linux.c
@@ -2633,13 +2633,13 @@ static int rtw_wps_start(struct net_device *dev,
struct iw_point *pdata = &wrqu->data;
u32 u32wps_start = 0;
- ret = copy_from_user((void *)&u32wps_start, pdata->pointer, 4);
- if (ret) {
+ if ((padapter->bDriverStopped) || (pdata == NULL)) {
ret = -EINVAL;
goto exit;
}
- if ((padapter->bDriverStopped) || (pdata == NULL)) {
+ ret = copy_from_user((void *)&u32wps_start, pdata->pointer, 4);
+ if (ret) {
ret = -EINVAL;
goto exit;
}
@@ -4450,11 +4450,9 @@ static int rtw_dbg_port(struct net_device *dev,
struct registry_priv *pregpriv = &padapter->registrypriv;
/* 0: disable, bit(0):enable 2.4g, bit(1):enable 5g, 0x3: enable both 2.4g and 5g */
/* default is set to enable 2.4GHZ for IOT issue with bufflao's AP at 5GHZ */
- if (pregpriv &&
- (extra_arg == 0 ||
- extra_arg == 1 ||
- extra_arg == 2 ||
- extra_arg == 3)) {
+ if (!pregpriv)
+ break;
+ if (extra_arg >= 0 && extra_arg <= 3) {
pregpriv->rx_stbc = extra_arg;
DBG_88E("set rx_stbc =%d\n", pregpriv->rx_stbc);
} else {
@@ -4466,7 +4464,9 @@ static int rtw_dbg_port(struct net_device *dev,
{
struct registry_priv *pregpriv = &padapter->registrypriv;
/* 0: disable, 0x1:enable (but wifi_spec should be 0), 0x2: force enable (don't care wifi_spec) */
- if (pregpriv && extra_arg >= 0 && extra_arg < 3) {
+ if (!pregpriv)
+ break;
+ if (extra_arg >= 0 && extra_arg < 3) {
pregpriv->ampdu_enable = extra_arg;
DBG_88E("set ampdu_enable =%d\n", pregpriv->ampdu_enable);
} else {
--
1.8.4.5
--
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