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From: Ilia Mirkin <imirkin@alum.mit.edu>
To: Greg Kroah-Hartman <gregkh@suse.de>
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: [PATCH 14/24] staging: rtl8192u: Remove NULL check before kfree
Date: Sun, 13 Mar 2011 00:29:07 -0500
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Content-Length: 5783
Lines: 186

This patch was generated by the following semantic patch:
// <smpl>
@@ expression E; @@
- if (E != NULL) { kfree(E); }
+ kfree(E);

@@ expression E; @@
- if (E != NULL) { kfree(E); E = NULL; }
+ kfree(E);
+ E = NULL;
// </smpl>

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
---
 drivers/staging/rtl8192u/ieee80211/cipher.c        |    3 +-
 .../staging/rtl8192u/ieee80211/ieee80211_module.c  |    7 +---
 drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c  |    7 +---
 .../staging/rtl8192u/ieee80211/ieee80211_softmac.c |    7 +---
 drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c  |    1 -
 drivers/staging/rtl8192u/r8192U_core.c             |   39 ++++++--------------
 6 files changed, 19 insertions(+), 45 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/cipher.c b/drivers/staging/rtl8192u/ieee80211/cipher.c
index 0b9e8a4..69dcc31 100644
--- a/drivers/staging/rtl8192u/ieee80211/cipher.c
+++ b/drivers/staging/rtl8192u/ieee80211/cipher.c
@@ -294,6 +294,5 @@ out:
 
 void crypto_exit_cipher_ops(struct crypto_tfm *tfm)
 {
-	if (tfm->crt_cipher.cit_iv)
-		kfree(tfm->crt_cipher.cit_iv);
+	kfree(tfm->crt_cipher.cit_iv);
 }
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
index 7455264..fe978f3 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
@@ -198,11 +198,8 @@ void free_ieee80211(struct net_device *dev)
 	int i;
 	//struct list_head *p, *q;
 //	del_timer_sync(&ieee->SwBwTimer);
-	if (ieee->pHTInfo != NULL)
-	{
-		kfree(ieee->pHTInfo);
-		ieee->pHTInfo = NULL;
-	}
+	kfree(ieee->pHTInfo);
+	ieee->pHTInfo = NULL;
 	RemoveAllTS(ieee);
 	ieee80211_softmac_free(ieee);
 	del_timer_sync(&ieee->crypt_deinit_timer);
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c
index 1ea8da3..498b520 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_rx.c
@@ -1384,11 +1384,8 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
 	return 1;
 
  rx_dropped:
-	if (rxb != NULL)
-	{
-		kfree(rxb);
-		rxb = NULL;
-	}
+	kfree(rxb);
+	rxb = NULL;
 	stats->rx_dropped++;
 
 	/* Returning 0 indicates to caller that we have not handled the SKB--
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
index 20f8c34..4992d63 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
@@ -2755,11 +2755,8 @@ void ieee80211_softmac_init(struct ieee80211_device *ieee)
 void ieee80211_softmac_free(struct ieee80211_device *ieee)
 {
 	down(&ieee->wx_sem);
-	if(NULL != ieee->pDot11dInfo)
-	{
-		kfree(ieee->pDot11dInfo);
-		ieee->pDot11dInfo = NULL;
-	}
+	kfree(ieee->pDot11dInfo);
+	ieee->pDot11dInfo = NULL;
 	del_timer_sync(&ieee->associate_timer);
 
 	cancel_delayed_work(&ieee->associate_retry_wq);
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c
index d6f55c2..f0ba7f4 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_wx.c
@@ -855,7 +855,6 @@ int ieee80211_wx_set_gen_ie(struct ieee80211_device *ieee, u8 *ie, size_t len)
 		ieee->wpa_ie_len = len;
 	}
 	else{
-		if (ieee->wpa_ie)
 		kfree(ieee->wpa_ie);
 		ieee->wpa_ie = NULL;
 		ieee->wpa_ie_len = 0;
diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c
index ae4f2b9..da612e6 100644
--- a/drivers/staging/rtl8192u/r8192U_core.c
+++ b/drivers/staging/rtl8192u/r8192U_core.c
@@ -2242,12 +2242,8 @@ short rtl8192_usb_initendpoints(struct net_device *dev)
 
 
 destroy:
-	if (priv->pp_rxskb) {
-		kfree(priv->pp_rxskb);
-	}
-	if (priv->rx_urb) {
-		kfree(priv->rx_urb);
-	}
+	kfree(priv->pp_rxskb);
+	kfree(priv->rx_urb);
 
 	priv->pp_rxskb = NULL;
 	priv->rx_urb = NULL;
@@ -2276,10 +2272,8 @@ void rtl8192_usb_deleteendpoints(struct net_device *dev)
 		kfree(priv->rx_urb);
 		priv->rx_urb = NULL;
 	}
-	if(priv->oldaddr){
-		kfree(priv->oldaddr);
-		priv->oldaddr = NULL;
-	}
+	kfree(priv->oldaddr);
+	priv->oldaddr = NULL;
 	if (priv->pp_rxskb) {
 		kfree(priv->pp_rxskb);
 		priv->pp_rxskb = 0;
@@ -2304,14 +2298,10 @@ void rtl8192_usb_deleteendpoints(struct net_device *dev)
 
 	}
 #else
-	if(priv->rx_urb){
-		kfree(priv->rx_urb);
-		priv->rx_urb = NULL;
-	}
-	if(priv->oldaddr){
-		kfree(priv->oldaddr);
-		priv->oldaddr = NULL;
-	}
+	kfree(priv->rx_urb);
+	priv->rx_urb = NULL;
+	kfree(priv->oldaddr);
+	priv->oldaddr = NULL;
 	if (priv->pp_rxskb) {
 		kfree(priv->pp_rxskb);
 		priv->pp_rxskb = 0;
@@ -5828,10 +5818,8 @@ static int __devinit rtl8192_usb_probe(struct usb_interface *intf,
 
 fail2:
 	rtl8192_down(dev);
-	if (priv->pFirmware) {
-		kfree(priv->pFirmware);
-		priv->pFirmware = NULL;
-	}
+	kfree(priv->pFirmware);
+	priv->pFirmware = NULL;
 	rtl8192_usb_deleteendpoints(dev);
 	destroy_workqueue(priv->priv_wq);
 	mdelay(10);
@@ -5869,11 +5857,8 @@ static void __devexit rtl8192_usb_disconnect(struct usb_interface *intf)
 		rtl8192_proc_remove_one(dev);
 
 			rtl8192_down(dev);
-		if (priv->pFirmware)
-		{
-			kfree(priv->pFirmware);
-			priv->pFirmware = NULL;
-		}
+		kfree(priv->pFirmware);
+		priv->pFirmware = NULL;
 	//	priv->rf_close(dev);
 //		rtl8192_SetRFPowerState(dev, eRfOff);
 		rtl8192_usb_deleteendpoints(dev);
-- 
1.7.3.4

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