linux-kernel - [PATCH 22/24] staging: vt6656: Remove NULL check before kfree

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Date:	Sun, 13 Mar 2011 00:29:15 -0500
From:	Ilia Mirkin <imirkin@...m.mit.edu>
To:	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 22/24] staging: vt6656: Remove NULL check before kfree

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@...m.mit.edu>
---
 drivers/staging/vt6656/firmware.c |    3 +--
 drivers/staging/vt6656/hostap.c   |    3 +--
 drivers/staging/vt6656/main_usb.c |   12 ++++--------
 drivers/staging/vt6656/wpactl.c   |    3 +--
 4 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/staging/vt6656/firmware.c b/drivers/staging/vt6656/firmware.c
index 1625412..8c8126a 100644
--- a/drivers/staging/vt6656/firmware.c
+++ b/drivers/staging/vt6656/firmware.c
@@ -109,8 +109,7 @@ FIRMWAREbDownload(
 	result = TRUE;
 
 out:
-	if (pBuffer)
-		kfree(pBuffer);
+	kfree(pBuffer);
 
 	spin_lock_irq(&pDevice->lock);
 	return result;
diff --git a/drivers/staging/vt6656/hostap.c b/drivers/staging/vt6656/hostap.c
index f70e922..51b5adf 100644
--- a/drivers/staging/vt6656/hostap.c
+++ b/drivers/staging/vt6656/hostap.c
@@ -858,8 +858,7 @@ int vt6656_hostap_ioctl(PSDevice pDevice, struct iw_point *p)
 	}
 
  out:
-	if (param != NULL)
-		kfree(param);
+	kfree(param);
 
 	return ret;
 }
diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 37d6396..af14ab0 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -837,8 +837,7 @@ static void device_free_tx_bufs(PSDevice pDevice)
             usb_kill_urb(pTxContext->pUrb);
             usb_free_urb(pTxContext->pUrb);
         }
-        if (pTxContext)
-            kfree(pTxContext);
+        kfree(pTxContext);
     }
     return;
 }
@@ -861,8 +860,7 @@ static void device_free_rx_bufs(PSDevice pDevice)
         if (pRCB->skb)
             dev_kfree_skb(pRCB->skb);
     }
-    if (pDevice->pRCBMem)
-        kfree(pDevice->pRCBMem);
+    kfree(pDevice->pRCBMem);
 
     return;
 }
@@ -878,8 +876,7 @@ static void usb_device_reset(PSDevice pDevice)
 
 static void device_free_int_bufs(PSDevice pDevice)
 {
-    if (pDevice->intBuf.pDataBuf != NULL)
-        kfree(pDevice->intBuf.pDataBuf);
+    kfree(pDevice->intBuf.pDataBuf);
     return;
 }
 
@@ -1480,8 +1477,7 @@ error2:
   */
 
 if(result!=0) {
-    if(buffer)
-  	 kfree(buffer);
+    kfree(buffer);
     buffer=NULL;
 }
   return buffer;
diff --git a/drivers/staging/vt6656/wpactl.c b/drivers/staging/vt6656/wpactl.c
index 7fd300f..8752736 100644
--- a/drivers/staging/vt6656/wpactl.c
+++ b/drivers/staging/vt6656/wpactl.c
@@ -999,8 +999,7 @@ int wpa_ioctl(PSDevice pDevice, struct iw_point *p)
 	}
 
 out:
-	if (param != NULL)
-		kfree(param);
+	kfree(param);
 
 	return ret;
 }
-- 
1.7.3.4

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