diff --git a/drivers/net/dm90x0.c b/drivers/net/dm90x0.c
index 16ee4c95eed..f5598617052 100644
--- a/drivers/net/dm90x0.c
+++ b/drivers/net/dm90x0.c
@@ -77,6 +77,7 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* If processing is not done at the interrupt level, then work queue support
  * is required.
  */
@@ -317,7 +318,7 @@ union rx_desc_u
 struct dm9x_driver_s
 {
   bool dm_bifup;               /* true:ifup false:ifdown */
-  bool dm_b100M;               /* true:speed == 100M; false:speed == 10M */
+  bool dm_b100m;               /* true:speed == 100M; false:speed == 10M */
   uint8_t dm_ntxpending;       /* Count of packets pending transmission */
   uint8_t ncrxpackets;         /* Number of continuous rx packets  */
   WDOG_ID dm_txpoll;           /* TX poll timer */
@@ -728,7 +729,7 @@ static int dm9x_transmit(FAR struct dm9x_driver_s *priv)
    * mode, that can be 2 packets, otherwise it is a single packet.
    */
 
-  if (priv->dm_ntxpending < 1 || (priv->dm_b100M && priv->dm_ntxpending < 2))
+  if (priv->dm_ntxpending < 1 || (priv->dm_b100m && priv->dm_ntxpending < 2))
     {
       /* Increment count of packets transmitted */
 
@@ -838,7 +839,7 @@ static int dm9x_txpoll(FAR struct net_driver_s *dev)
            * packet.
            */
 
-          if (priv->dm_ntxpending > 1 || !priv->dm_b100M)
+          if (priv->dm_ntxpending > 1 || !priv->dm_b100m)
             {
               /* Returning a non-zero value will terminate the poll operation */
 
@@ -1004,7 +1005,7 @@ static void dm9x_receive(FAR struct dm9x_driver_s *priv)
                */
 
               if (priv->dm_dev.d_len > 0)
-               {
+                {
                   /* Update the Ethernet header with the correct MAC address */
 
 #ifdef CONFIG_NET_IPv4
@@ -1184,19 +1185,20 @@ static void dm9x_interrupt_work(FAR void *arg)
 
               if (dm9x_phyread(priv, 0) & 0x2000)
                 {
-                  priv->dm_b100M = true;
+                  priv->dm_b100m = true;
                 }
               else
                 {
-                  priv->dm_b100M = false;
+                  priv->dm_b100m = false;
                 }
               break;
             }
+
           up_mdelay(1);
         }
 
       nerr("ERROR: delay: %dmS speed: %s\n",
-           i, priv->dm_b100M ? "100M" : "10M");
+           i, priv->dm_b100m ? "100M" : "10M");
     }
 
   /* Check if we received an incoming packet */
@@ -1410,7 +1412,7 @@ static void dm9x_poll_work(FAR void *arg)
    * mode, that can be 2 packets, otherwise it is a single packet.
    */
 
-  if (priv->dm_ntxpending < 1 || (priv->dm_b100M && priv->dm_ntxpending < 2))
+  if (priv->dm_ntxpending < 1 || (priv->dm_b100m && priv->dm_ntxpending < 2))
     {
       /* If so, update TCP timing states and poll the network for new XMIT data */
 
@@ -1528,7 +1530,7 @@ static int dm9x_ifup(FAR struct net_driver_s *dev)
 
   /* Check link state and media speed (waiting up to 3s for link OK) */
 
-  priv->dm_b100M = false;
+  priv->dm_b100m = false;
   for (i = 0; i < 3000; i++)
     {
       netstatus = getreg(DM9X_NETS);
@@ -1540,15 +1542,17 @@ static int dm9x_ifup(FAR struct net_driver_s *dev)
           netstatus = getreg(DM9X_NETS);
           if ((netstatus & DM9X_NETS_SPEED) == 0)
             {
-              priv->dm_b100M = true;
+              priv->dm_b100m = true;
             }
+
           break;
         }
+
       i++;
       up_mdelay(1);
     }
 
-  ninfo("delay: %dmS speed: %s\n", i, priv->dm_b100M ? "100M" : "10M");
+  ninfo("delay: %dmS speed: %s\n", i, priv->dm_b100m ? "100M" : "10M");
 
   /* Set and activate a timer process */
 
@@ -1636,13 +1640,12 @@ static void dm9x_txavail_work(FAR void *arg)
   net_lock();
   if (priv->dm_bifup)
     {
-
       /* Check if there is room in the DM90x0 to hold another packet.  In 100M
        * mode, that can be 2 packets, otherwise it is a single packet.
        */
 
       if (priv->dm_ntxpending < 1 ||
-          (priv->dm_b100M && priv->dm_ntxpending < 2))
+          (priv->dm_b100m && priv->dm_ntxpending < 2))
         {
           /* If so, then poll the network for new XMIT data */
 
@@ -1881,17 +1884,19 @@ static void dm9x_reset(FAR struct dm9x_driver_s *priv)
 
   /* Wait up to 1 second for the link to be OK */
 
-  priv->dm_b100M = false;
+  priv->dm_b100m = false;
   for (i = 0; i < 1000; i++)
     {
       if (dm9x_phyread(priv, 0x1) & 0x4)
         {
-          if (dm9x_phyread(priv, 0) &0x2000)
+          if (dm9x_phyread(priv, 0) & 0x2000)
             {
-              priv->dm_b100M = true;
+              priv->dm_b100m = true;
             }
+
           break;
         }
+
       up_mdelay(1);
     }
 
diff --git a/drivers/net/enc28j60.c b/drivers/net/enc28j60.c
index 7d73aa9784f..299febe90f1 100644
--- a/drivers/net/enc28j60.c
+++ b/drivers/net/enc28j60.c
@@ -962,7 +962,7 @@ static inline void enc_wrbuffer(FAR struct enc_driver_s *priv,
    */
 
   SPI_SELECT(priv->spi, SPIDEV_ETHERNET(0), false);
-  enc_bmdump(ENC_WBM, buffer, buflen+1);
+  enc_bmdump(ENC_WBM, buffer, buflen + 1);
 }
 
 /****************************************************************************
@@ -1389,7 +1389,7 @@ static void enc_rxdispatch(FAR struct enc_driver_s *priv)
 #ifdef CONFIG_NET_PKT
   /* When packet sockets are enabled, feed the frame into the packet tap */
 
-   pkt_input(&priv->dev);
+  pkt_input(&priv->dev);
 #endif
 
   /* We only accept IP packets of the configured type and ARP packets */
@@ -1485,11 +1485,11 @@ static void enc_rxdispatch(FAR struct enc_driver_s *priv)
        * sent out on the network, the field  d_len will set to a value > 0.
        */
 
-       if (priv->dev.d_len > 0)
-         {
-           enc_transmit(priv);
-         }
-     }
+      if (priv->dev.d_len > 0)
+        {
+          enc_transmit(priv);
+        }
+    }
   else
 #endif
     {
diff --git a/drivers/net/encx24j600.c b/drivers/net/encx24j600.c
index 1da3f3d0691..e1d5f6a04be 100644
--- a/drivers/net/encx24j600.c
+++ b/drivers/net/encx24j600.c
@@ -529,7 +529,6 @@ static inline void enc_setethrst(FAR struct enc_driver_s *priv)
 
 static void enc_setbank(FAR struct enc_driver_s *priv, uint8_t bank)
 {
-
   /* Check if a bank has to be set and if the bank setting has changed.
    * For registers that are available on all banks, the bank command is set
    * to 0.
@@ -1556,7 +1555,7 @@ static void enc_rxdispatch(FAR struct enc_driver_s *priv)
            */
 
           if (priv->dev.d_len > 0)
-           {
+            {
               /* Update the Ethernet header with the correct MAC address */
 
 #ifdef CONFIG_NET_IPv4
@@ -2737,10 +2736,10 @@ static int enc_reset(FAR struct enc_driver_s *priv)
       return -ENODEV;
     }
 
-  /**
-   * Wait at least 256 μs for the PHY registers and PHY status bits to become
+  /* Wait at least 256 μs for the PHY registers and PHY status bits to become
    * available.
    */
+
   up_udelay(256);
 
   /* Initialize RX/TX buffers */
diff --git a/drivers/net/ftmac100.c b/drivers/net/ftmac100.c
index 1e3f02c4b08..45d230a3852 100644
--- a/drivers/net/ftmac100.c
+++ b/drivers/net/ftmac100.c
@@ -68,6 +68,7 @@
 /****************************************************************************
  * Pre-processor Definitions
  ****************************************************************************/
+
 /* If processing is not done at the interrupt level, then work queue support
  * is required.
  */
@@ -316,6 +317,7 @@ static int ftmac100_transmit(FAR struct ftmac100_driver_s *priv)
   priv->tx_pending++;
 
   /* Enable Tx polling */
+
   /* FIXME: enable interrupts */
 
   putreg32(1, &iobase->txpd);
@@ -750,7 +752,7 @@ static void ftmac100_receive(FAR struct ftmac100_driver_s *priv)
            */
 
           if (priv->ft_dev.d_len > 0)
-           {
+            {
               /* Update the Ethernet header with the correct MAC address */
 
 #ifdef CONFIG_NET_IPv4
@@ -789,6 +791,7 @@ static void ftmac100_receive(FAR struct ftmac100_driver_s *priv)
             }
         }
 #endif
+
       priv->rx_pointer = (priv->rx_pointer + 1) &
                          (CONFIG_FTMAC100_RX_DESC - 1);
 
@@ -1594,6 +1597,7 @@ int ftmac100_initialize(int intf)
   /* Put the interface in the down state.  This usually amounts to resetting
    * the device and/or calling ftmac100_ifdown().
    */
+
   ftmac100_reset(priv);
 
   /* Read the MAC address from the hardware into priv->ft_dev.d_mac.ether.ether_addr_octet */
diff --git a/drivers/net/lan91c111.c b/drivers/net/lan91c111.c
index bf04c588fb8..d80bfe6e6c4 100644
--- a/drivers/net/lan91c111.c
+++ b/drivers/net/lan91c111.c
@@ -420,6 +420,7 @@ static int lan91c111_transmit(FAR struct net_driver_s *dev)
    *
    * If odd size then last byte is included in ctl word.
    */
+
   pages = ((dev->d_len & ~1) + 6) >> 8;
 
   while (1)
@@ -536,6 +537,7 @@ static int lan91c111_txpoll(FAR struct net_driver_s *dev)
           arp_out(dev);
         }
 #endif /* CONFIG_NET_IPv4 */
+
 #ifdef CONFIG_NET_IPv6
       if (IFF_IS_IPv6(dev->d_flags))
         {
@@ -599,6 +601,7 @@ static void lan91c111_reply(FAR struct net_driver_s *dev)
           arp_out(dev);
         }
 #endif
+
 #ifdef CONFIG_NET_IPv6
       if (IFF_IS_IPv6(dev->d_flags))
         {
@@ -1321,7 +1324,7 @@ static uint32_t lan91c111_crc32(FAR const uint8_t *src, size_t len)
         }
     }
 
-    return crc;
+  return crc;
 }
 
 static int lan91c111_addmac(FAR struct net_driver_s *dev,
diff --git a/drivers/net/phy_notify.c b/drivers/net/phy_notify.c
index 4ebcdd25f7d..71664a3af22 100644
--- a/drivers/net/phy_notify.c
+++ b/drivers/net/phy_notify.c
@@ -104,7 +104,7 @@
 struct phy_notify_s
 {
   bool assigned;
-  char intf[CONFIG_PHY_NOTIFICATION_MAXINTFLEN+1];
+  char intf[CONFIG_PHY_NOTIFICATION_MAXINTFLEN + 1];
   pid_t pid;
   struct sigevent event;
   struct sigwork_s work;
diff --git a/drivers/net/skeleton.c b/drivers/net/skeleton.c
index 13983dc30d1..33bf32b59ac 100644
--- a/drivers/net/skeleton.c
+++ b/drivers/net/skeleton.c
@@ -1194,7 +1194,8 @@ int skel_initialize(int intf)
    * the device and/or calling skel_ifdown().
    */
 
-  /* Read the MAC address from the hardware into priv->sk_dev.d_mac.ether.ether_addr_octet
+  /* Read the MAC address from the hardware into
+   * priv->sk_dev.d_mac.ether.ether_addr_octet
    * Applies only if the Ethernet MAC has its own internal address.
    */
 
diff --git a/drivers/net/slip.c b/drivers/net/slip.c
index 12dff74ba11..1b85ff93db6 100644
--- a/drivers/net/slip.c
+++ b/drivers/net/slip.c
@@ -631,7 +631,7 @@ static inline void slip_receive(FAR struct slip_driver_s *priv)
 
         default:
           {
-            if (priv->rxlen < CONFIG_NET_SLIP_PKTSIZE+2)
+            if (priv->rxlen < CONFIG_NET_SLIP_PKTSIZE + 2)
               {
                 priv->rxbuf[priv->rxlen++] = ch;
               }
diff --git a/drivers/net/telnet.c b/drivers/net/telnet.c
index 08209906949..8dca0f222ae 100644
--- a/drivers/net/telnet.c
+++ b/drivers/net/telnet.c
@@ -518,6 +518,7 @@ static ssize_t telnet_receive(FAR struct telnet_dev_s *priv,
             break;
 
           case STATE_DONT:
+
             /* Reply with a WONT */
 
             telnet_sendopt(priv, TELNET_WONT, ch);
@@ -554,6 +555,7 @@ static ssize_t telnet_receive(FAR struct telnet_dev_s *priv,
           /* Handle NAWS sub-option negotiation */
 
           case STATE_SB_NAWS:
+
             /* Update cols / rows based on received byte count */
 
             switch (priv->td_sb_count)