drivers/net: Remove pointless checks for NULL prior to calling kfree()

8 files changed, 43 insertions, 77 deletions

diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index cb429e783749..4c11699bad91 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -2381,14 +2381,10 @@ void stop_airo_card( struct net_device *dev, int freeres )
                         dev_kfree_skb(skb);
         }
 
-        if (ai->flash)
-                kfree(ai->flash);
-        if (ai->rssi)
-                kfree(ai->rssi);
-        if (ai->APList)
-                kfree(ai->APList);
-        if (ai->SSID)
-                kfree(ai->SSID);
+        kfree(ai->flash);
+        kfree(ai->rssi);
+        kfree(ai->APList);
+        kfree(ai->SSID);
         if (freeres) {
                 /* PCMCIA frees this stuff, so only for PCI and ISA */
                 release_region( dev->base_addr, 64 );
@@ -3626,10 +3622,8 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
         int rc;
 
         memset( &mySsid, 0, sizeof( mySsid ) );
-        if (ai->flash) {
-                kfree (ai->flash);
-                ai->flash = NULL;
-        }
+        kfree (ai->flash);
+        ai->flash = NULL;
 
         /* The NOP is the first step in getting the card going */
         cmd.cmd = NOP;
@@ -3666,14 +3660,10 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
                 tdsRssiRid rssi_rid;
                 CapabilityRid cap_rid;
 
-                if (ai->APList) {
-                        kfree(ai->APList);
-                        ai->APList = NULL;
-                }
-                if (ai->SSID) {
-                        kfree(ai->SSID);
-                        ai->SSID = NULL;
-                }
+                kfree(ai->APList);
+                ai->APList = NULL;
+                kfree(ai->SSID);
+                ai->SSID = NULL;
                 // general configuration (read/modify/write)
                 status = readConfigRid(ai, lock);
                 if ( status != SUCCESS ) return ERROR;
@@ -3687,10 +3677,8 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock)
                                 memcpy(ai->rssi, (u8*)&rssi_rid + 2, 512); /* Skip RID length member */
                 }
                 else {
-                        if (ai->rssi) {
-                                kfree(ai->rssi);
-                                ai->rssi = NULL;
-                        }
+                        kfree(ai->rssi);
+                        ai->rssi = NULL;
                         if (cap_rid.softCap & 8)
                                 ai->config.rmode |= RXMODE_NORMALIZED_RSSI;
                         else
@@ -5369,11 +5357,13 @@ static int proc_BSSList_open( struct inode *inode, struct file *file ) {
 
 static int proc_close( struct inode *inode, struct file *file )
 {
-        struct proc_data *data = (struct proc_data *)file->private_data;
-        if ( data->on_close != NULL ) data->on_close( inode, file );
-        if ( data->rbuffer ) kfree( data->rbuffer );
-        if ( data->wbuffer ) kfree( data->wbuffer );
-        kfree( data );
+        struct proc_data *data = file->private_data;
+
+        if (data->on_close != NULL)
+                data->on_close(inode, file);
+        kfree(data->rbuffer);
+        kfree(data->wbuffer);
+        kfree(data);
         return 0;
 }
 
diff --git a/drivers/net/wireless/airo_cs.c b/drivers/net/wireless/airo_cs.c
index bf25584d68d3..784de9109113 100644
--- a/drivers/net/wireless/airo_cs.c
+++ b/drivers/net/wireless/airo_cs.c
@@ -258,9 +258,7 @@ static void airo_detach(dev_link_t *link)
         
         /* Unlink device structure, free pieces */
         *linkp = link->next;
-        if (link->priv) {
-                kfree(link->priv);
-        }
+        kfree(link->priv);
         kfree(link);
         
 } /* airo_detach */
diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c
index d57011028b72..1fbe027d26b6 100644
--- a/drivers/net/wireless/atmel.c
+++ b/drivers/net/wireless/atmel.c
@@ -1653,8 +1653,7 @@ void stop_atmel_card(struct net_device *dev, int freeres)
         unregister_netdev(dev);
         remove_proc_entry("driver/atmel", NULL);
         free_irq(dev->irq, dev);
-        if (priv->firmware)
-                kfree(priv->firmware);
+        kfree(priv->firmware);
         if (freeres) {
                 /* PCMCIA frees this stuff, so only for PCI */
                 release_region(dev->base_addr, 64);
@@ -2450,8 +2449,7 @@ static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
                         break;
                 }
 
-                if (priv->firmware)
-                        kfree(priv->firmware);
+                kfree(priv->firmware);
                 
                 priv->firmware = new_firmware;
                 priv->firmware_length = com.len;
diff --git a/drivers/net/wireless/atmel_cs.c b/drivers/net/wireless/atmel_cs.c
index ff031a3985b3..195cb36619e8 100644
--- a/drivers/net/wireless/atmel_cs.c
+++ b/drivers/net/wireless/atmel_cs.c
@@ -259,8 +259,7 @@ static void atmel_detach(dev_link_t *link)
 
         /* Unlink device structure, free pieces */
         *linkp = link->next;
-        if (link->priv)
-                kfree(link->priv);
+        kfree(link->priv);
         kfree(link);
 }
 
diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c
index 53f5246c40aa..2617d70bcda9 100644
--- a/drivers/net/wireless/hostap/hostap_ioctl.c
+++ b/drivers/net/wireless/hostap/hostap_ioctl.c
@@ -552,7 +552,6 @@ static int prism2_ioctl_giwaplist(struct net_device *dev,
 
         kfree(addr);
         kfree(qual);
-
         return 0;
 }
 
@@ -3081,9 +3080,7 @@ static int prism2_ioctl_priv_download(local_info_t *local, struct iw_point *p)
         ret = local->func->download(local, param);
 
  out:
-        if (param != NULL)
-                kfree(param);
-
+        kfree(param);
         return ret;
 }
 #endif /* PRISM2_DOWNLOAD_SUPPORT */
@@ -3890,9 +3887,7 @@ static int prism2_ioctl_priv_hostapd(local_info_t *local, struct iw_point *p)
         }
 
  out:
-        if (param != NULL)
-                kfree(param);
-
+        kfree(param);
         return ret;
 }
 
diff --git a/drivers/net/wireless/prism54/islpci_dev.c b/drivers/net/wireless/prism54/islpci_dev.c
index 6c9584a9f284..78bdb359835e 100644
--- a/drivers/net/wireless/prism54/islpci_dev.c
+++ b/drivers/net/wireless/prism54/islpci_dev.c
@@ -754,8 +754,7 @@ islpci_free_memory(islpci_private *priv)
                         pci_unmap_single(priv->pdev, buf->pci_addr,
                                          buf->size, PCI_DMA_FROMDEVICE);
                 buf->pci_addr = 0;
-                if (buf->mem)
-                        kfree(buf->mem);
+                kfree(buf->mem);
                 buf->size = 0;
                 buf->mem = NULL;
         }
diff --git a/drivers/net/wireless/prism54/oid_mgt.c b/drivers/net/wireless/prism54/oid_mgt.c
index 12123e24b113..eea2f04c8c6d 100644
--- a/drivers/net/wireless/prism54/oid_mgt.c
+++ b/drivers/net/wireless/prism54/oid_mgt.c
@@ -268,11 +268,10 @@ mgt_clean(islpci_private *priv)
 
         if (!priv->mib)
                 return;
-        for (i = 0; i < OID_NUM_LAST; i++)
-                if (priv->mib[i]) {
-                        kfree(priv->mib[i]);
-                        priv->mib[i] = NULL;
-                }
+        for (i = 0; i < OID_NUM_LAST; i++) {
+                kfree(priv->mib[i]);
+                priv->mib[i] = NULL;
+        }
         kfree(priv->mib);
         priv->mib = NULL;
 }
diff --git a/drivers/net/wireless/strip.c b/drivers/net/wireless/strip.c
index 7bc7fc823128..d25264ba0c0e 100644
--- a/drivers/net/wireless/strip.c
+++ b/drivers/net/wireless/strip.c
@@ -860,12 +860,9 @@ static int allocate_buffers(struct strip *strip_info, int mtu)
                 strip_info->mtu = dev->mtu = mtu;
                 return (1);
         }
-        if (r)
-                kfree(r);
-        if (s)
-                kfree(s);
-        if (t)
-                kfree(t);
+        kfree(r);
+        kfree(s);
+        kfree(t);
         return (0);
 }
 
@@ -922,13 +919,9 @@ static int strip_change_mtu(struct net_device *dev, int new_mtu)
         printk(KERN_NOTICE "%s: strip MTU changed fom %d to %d.\n",
                strip_info->dev->name, old_mtu, strip_info->mtu);
 
-        if (orbuff)
-                kfree(orbuff);
-        if (osbuff)
-                kfree(osbuff);
-        if (otbuff)
-                kfree(otbuff);
-
+        kfree(orbuff);
+        kfree(osbuff);
+        kfree(otbuff);
         return 0;
 }
 
@@ -2498,18 +2491,13 @@ static int strip_close_low(struct net_device *dev)
         /*
          * Free all STRIP frame buffers.
          */
-        if (strip_info->rx_buff) {
-                kfree(strip_info->rx_buff);
-                strip_info->rx_buff = NULL;
-        }
-        if (strip_info->sx_buff) {
-                kfree(strip_info->sx_buff);
-                strip_info->sx_buff = NULL;
-        }
-        if (strip_info->tx_buff) {
-                kfree(strip_info->tx_buff);
-                strip_info->tx_buff = NULL;
-        }
+        kfree(strip_info->rx_buff);
+        strip_info->rx_buff = NULL;
+        kfree(strip_info->sx_buff);
+        strip_info->sx_buff = NULL;
+        kfree(strip_info->tx_buff);
+        strip_info->tx_buff = NULL;
+
         del_timer(&strip_info->idle_timer);
         return 0;
 }