staging: wilc1000: linux_mon: fix NULL comparison style

This patch fixes NULL comparsion style found by checkpatch.pl

CHECK: Comparison to NULL could be written "!wilc_wfi_mon"
CHECK: Comparison to NULL could be written "!skb"
CHECK: Comparison to NULL could be written "!skb"
CHECK: Comparison to NULL could be written "!dev"
CHECK: Comparison to NULL could be written "!mgmt_tx"
CHECK: Comparison to NULL could be written "!mgmt_tx->buff"
CHECK: Comparison to NULL could be written "!wilc_wfi_mon"
CHECK: Comparison to NULL could be written "!mon_priv"
CHECK: Comparison to NULL could be written "!priv"
CHECK: Comparison to NULL could be written "wilc_wfi_mon"

Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/wilc1000/linux_mon.c b/drivers/staging/wilc1000/linux_mon.c
index 398fdea..7b9cc02 100644 (file)
--- a/drivers/staging/wilc1000/linux_mon.c
+++ b/drivers/staging/wilc1000/linux_mon.c
@@ -54,7 +54,7 @@ void WILC_WFI_monitor_rx(u8 *buff, u32 size)
 
        PRINT_INFO(HOSTAPD_DBG, "In monitor interface receive function\n");
 
-       if (wilc_wfi_mon == NULL)
+       if (!wilc_wfi_mon)
                return;
 
        if (!netif_running(wilc_wfi_mon)) {
@@ -73,7 +73,7 @@ void WILC_WFI_monitor_rx(u8 *buff, u32 size)
                /* hostapd callback mgmt frame */
 
                skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_cb_hdr));
-               if (skb == NULL) {
+               if (!skb) {
                        PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
                        return;
                }
@@ -103,7 +103,7 @@ void WILC_WFI_monitor_rx(u8 *buff, u32 size)
        } else {
                skb = dev_alloc_skb(size + sizeof(struct wilc_wfi_radiotap_hdr));
 
-               if (skb == NULL) {
+               if (!skb) {
                        PRINT_INFO(HOSTAPD_DBG, "Monitor if : No memory to allocate skb");
                        return;
                }
@@ -156,20 +156,20 @@ static int mon_mgmt_tx(struct net_device *dev, const u8 *buf, size_t len)
 {
        struct tx_complete_mon_data *mgmt_tx = NULL;
 
-       if (dev == NULL) {
+       if (!dev) {
                PRINT_D(HOSTAPD_DBG, "ERROR: dev == NULL\n");
                return -EFAULT;
        }
 
        netif_stop_queue(dev);
        mgmt_tx = kmalloc(sizeof(struct tx_complete_mon_data), GFP_ATOMIC);
-       if (mgmt_tx == NULL) {
+       if (!mgmt_tx) {
                PRINT_ER("Failed to allocate memory for mgmt_tx structure\n");
                return -EFAULT;
        }
 
        mgmt_tx->buff = kmalloc(len, GFP_ATOMIC);
-       if (mgmt_tx->buff == NULL) {
+       if (!mgmt_tx->buff) {
                PRINT_ER("Failed to allocate memory for mgmt_tx buff\n");
                kfree(mgmt_tx);
                return -EFAULT;
@@ -203,12 +203,12 @@ static netdev_tx_t WILC_WFI_mon_xmit(struct sk_buff *skb,
        struct sk_buff *skb2;
        struct wilc_wfi_radiotap_cb_hdr *cb_hdr;
 
-       if (wilc_wfi_mon == NULL)
+       if (!wilc_wfi_mon)
                return -EFAULT;
 
        mon_priv = netdev_priv(wilc_wfi_mon);
 
-       if (mon_priv == NULL) {
+       if (!mon_priv) {
                PRINT_ER("Monitor interface private structure is NULL\n");
                return -EFAULT;
        }
@@ -324,7 +324,7 @@ struct net_device *WILC_WFI_init_mon_interface(const char *name, struct net_devi
                return NULL;
        }
        priv = netdev_priv(wilc_wfi_mon);
-       if (priv == NULL) {
+       if (!priv) {
                PRINT_ER("private structure is NULL\n");
                return NULL;
        }
@@ -347,7 +347,7 @@ int WILC_WFI_deinit_mon_interface(void)
 {
        bool rollback_lock = false;
 
-       if (wilc_wfi_mon != NULL) {
+       if (wilc_wfi_mon) {
                PRINT_D(HOSTAPD_DBG, "In Deinit monitor interface\n");
                PRINT_D(HOSTAPD_DBG, "RTNL is being locked\n");
                if (rtnl_is_locked()) {