commit 3d82de0fa584fbe73cf74a3bbc906c8710c523b8
author Yogesh Ashok Powar <yogeshp@marvell.com> Wed Oct 05 14:58:24 2011 -0700
committer John W. Linville <linville@tuxdriver.com> Tue Oct 11 16:41:11 2011 -0400
tree 7cc59834bd6e7b298b4ceca53ca4c48c9c74c3e0
parent f49bbd2a45bf37d9fe202486712c89c214e33b5a

mwifiex: fix smatch errors

drivers/net/wireless/mwifiex/main.c +828 mwifiex_remove_card(52)
  error: potential null derefence 'priv'.
drivers/net/wireless/mwifiex/main.c +828 mwifiex_remove_card(52)
  error: we previously assumed 'priv' could be null (see line 820)
drivers/net/wireless/mwifiex/txrx.c +90 mwifiex_process_tx(24)
  error: potential null derefence 'local_tx_pd'.
drivers/net/wireless/mwifiex/sta_ioctl.c +766
mwifiex_rate_ioctl_set_rate_value(30)
  error: buffer overflow 'rate' 14 <= 14

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mwifiex/main.c

diff --git a/drivers/net/wireless/mwifiex/main.c b/drivers/net/wireless/mwifiex/main.c
index 8486451..277ea84 100644
--- a/drivers/net/wireless/mwifiex/main.c
+++ b/drivers/net/wireless/mwifiex/main.c
@@ -825,6 +825,10 @@
 		rtnl_unlock();
 	}
 
+	priv = adapter->priv[0];
+	if (!priv)
+		goto exit_remove;
+
 	wiphy_unregister(priv->wdev->wiphy);
 	wiphy_free(priv->wdev->wiphy);
 	kfree(priv->wdev);

drivers/net/wireless/mwifiex/sta_ioctl.c

diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
index 520800b..f20550a 100644
--- a/drivers/net/wireless/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -763,7 +763,7 @@
 			if ((rate[i] & 0x7f) == (rate_cfg->rate & 0x7f))
 				break;
 		}
-		if (!rate[i] || (i == MWIFIEX_SUPPORTED_RATES)) {
+		if ((i == MWIFIEX_SUPPORTED_RATES) || !rate[i]) {
 			dev_err(adapter->dev, "fixed data rate %#x is out "
 			       "of range\n", rate_cfg->rate);
 			return -1;

drivers/net/wireless/mwifiex/txrx.c

diff --git a/drivers/net/wireless/mwifiex/txrx.c b/drivers/net/wireless/mwifiex/txrx.c
index 6190b2f..5d95c4b 100644
--- a/drivers/net/wireless/mwifiex/txrx.c
+++ b/drivers/net/wireless/mwifiex/txrx.c
@@ -87,7 +87,8 @@
 			(adapter->pps_uapsd_mode) &&
 			(adapter->tx_lock_flag)) {
 				priv->adapter->tx_lock_flag = false;
-				local_tx_pd->flags = 0;
+				if (local_tx_pd)
+					local_tx_pd->flags = 0;
 		}
 		dev_dbg(adapter->dev, "data: -EBUSY is returned\n");
 		break;