diff --git a/arch/8051/src/up_assert.c b/arch/8051/src/up_assert.c
index 2b9cf7759f..0be57a7926 100644
--- a/arch/8051/src/up_assert.c
+++ b/arch/8051/src/up_assert.c
@@ -81,7 +81,7 @@ static void _up_assert(int errorcode)
   if (g_irqtos || ((FAR struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/8051/src/up_irqtest.c b/arch/8051/src/up_irqtest.c
index ec3ee487dc..21b558c673 100644
--- a/arch/8051/src/up_irqtest.c
+++ b/arch/8051/src/up_irqtest.c
@@ -207,7 +207,7 @@ void os_start(void)
 
   _up_puts("Test complete");
   _up_putnl();
-  for(;;);
+  for (;;);
 }
 
 /************************************************************************
diff --git a/arch/arm/src/arm/up_assert.c b/arch/arm/src/arm/up_assert.c
index e1fc9ad757..f729d85507 100644
--- a/arch/arm/src/arm/up_assert.c
+++ b/arch/arm/src/arm/up_assert.c
@@ -301,7 +301,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/arm/src/armv6-m/up_assert.c b/arch/arm/src/armv6-m/up_assert.c
index 9dec6306a8..1becf49871 100644
--- a/arch/arm/src/armv6-m/up_assert.c
+++ b/arch/arm/src/armv6-m/up_assert.c
@@ -317,7 +317,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/arm/src/armv7-a/arm_assert.c b/arch/arm/src/armv7-a/arm_assert.c
index bede2df4e3..12a5615a0e 100644
--- a/arch/arm/src/armv7-a/arm_assert.c
+++ b/arch/arm/src/armv7-a/arm_assert.c
@@ -312,7 +312,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/arm/src/armv7-m/up_assert.c b/arch/arm/src/armv7-m/up_assert.c
index 53c9ac20ad..2c538f0177 100644
--- a/arch/arm/src/armv7-m/up_assert.c
+++ b/arch/arm/src/armv7-m/up_assert.c
@@ -327,7 +327,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
       (void)irqsave();
-      for(;;)
+      for (;;)
         {
 #ifdef CONFIG_ARCH_LEDS
           board_led_on(LED_PANIC);
diff --git a/arch/arm/src/common/up_vfork.c b/arch/arm/src/common/up_vfork.c
index 03fb09b2f1..4e9f767180 100644
--- a/arch/arm/src/common/up_vfork.c
+++ b/arch/arm/src/common/up_vfork.c
@@ -185,7 +185,7 @@ pid_t up_vfork(const struct vfork_s *context)
   /* Make some feeble effort to perserve the stack contents.  This is
    * feeble because the stack surely contains invalid pointers and other
    * content that will not work in the child context.  However, if the
-   * user follows all of the caveats of vfor() usage, even this feeble
+   * user follows all of the caveats of vfork() usage, even this feeble
    * effort is overkill.
    */
 
diff --git a/arch/arm/src/dm320/dm320_serial.c b/arch/arm/src/dm320/dm320_serial.c
index 5b944b9b7f..abea36d57e 100644
--- a/arch/arm/src/dm320/dm320_serial.c
+++ b/arch/arm/src/dm320/dm320_serial.c
@@ -493,7 +493,7 @@ static int up_interrupt(int irq, void *context)
    * until we have been looping for a long time.
    */
 
-  for(;;)
+  for (;;)
     {
       /* Get the current UART status and check for loop
        * termination conditions
diff --git a/arch/arm/src/imx/imx_serial.c b/arch/arm/src/imx/imx_serial.c
index 08f57eeda0..c866a53f9c 100644
--- a/arch/arm/src/imx/imx_serial.c
+++ b/arch/arm/src/imx/imx_serial.c
@@ -832,7 +832,7 @@ static int up_interrupt(int irq, void *context)
    * until we have been looping for a long time.
    */
 
-  for(;;)
+  for (;;)
     {
       /* Get the current UART status and check for loop
        * termination conditions
diff --git a/arch/arm/src/kinetis/kinetis_start.c b/arch/arm/src/kinetis/kinetis_start.c
index 6a309ab838..b611709a64 100644
--- a/arch/arm/src/kinetis/kinetis_start.c
+++ b/arch/arm/src/kinetis/kinetis_start.c
@@ -165,5 +165,5 @@ void __start(void)
 
   /* Shouldn't get here */
 
-  for(;;);
+  for (;;);
 }
diff --git a/arch/arm/src/kl/kl_start.c b/arch/arm/src/kl/kl_start.c
index 3daa3ef331..79d1ec1600 100644
--- a/arch/arm/src/kl/kl_start.c
+++ b/arch/arm/src/kl/kl_start.c
@@ -181,6 +181,6 @@ void __start(void)
 
   /* Shoulnd't get here */
 
-  for(;;);
+  for (;;);
 }
 
diff --git a/arch/arm/src/lpc17xx/lpc17_start.c b/arch/arm/src/lpc17xx/lpc17_start.c
index 256d035abe..7f8756f4c2 100644
--- a/arch/arm/src/lpc17xx/lpc17_start.c
+++ b/arch/arm/src/lpc17xx/lpc17_start.c
@@ -257,5 +257,5 @@ void __start(void)
 
   /* Shouldn't get here */
 
-  for(;;);
+  for (;;);
 }
diff --git a/arch/arm/src/lpc43xx/lpc43_start.c b/arch/arm/src/lpc43xx/lpc43_start.c
index fc96ab14a2..19756c7549 100644
--- a/arch/arm/src/lpc43xx/lpc43_start.c
+++ b/arch/arm/src/lpc43xx/lpc43_start.c
@@ -357,5 +357,5 @@ void __start(void)
 
   /* Shouldn't get here */
 
-  for(;;);
+  for (;;);
 }
diff --git a/arch/arm/src/nuc1xx/nuc_start.c b/arch/arm/src/nuc1xx/nuc_start.c
index 4d5b9c3028..aeb0f4e6e0 100644
--- a/arch/arm/src/nuc1xx/nuc_start.c
+++ b/arch/arm/src/nuc1xx/nuc_start.c
@@ -174,5 +174,5 @@ void __start(void)
 
   /* Shoulnd't get here */
 
-  for(;;);
+  for (;;);
 }
diff --git a/arch/arm/src/sam34/sam_start.c b/arch/arm/src/sam34/sam_start.c
index d0f855585c..3cf653b0f2 100644
--- a/arch/arm/src/sam34/sam_start.c
+++ b/arch/arm/src/sam34/sam_start.c
@@ -191,5 +191,5 @@ void __start(void)
 
   /* Shouldn't get here */
 
-  for(;;);
+  for (;;);
 }
diff --git a/arch/arm/src/samd/sam_start.c b/arch/arm/src/samd/sam_start.c
index 8f749339b6..81aacbe47a 100644
--- a/arch/arm/src/samd/sam_start.c
+++ b/arch/arm/src/samd/sam_start.c
@@ -175,5 +175,5 @@ void __start(void)
 
   /* Shoulnd't get here */
 
-  for(;;);
+  for (;;);
 }
diff --git a/arch/arm/src/stm32/stm32_start.c b/arch/arm/src/stm32/stm32_start.c
index 689fcc2153..20fb2054c6 100644
--- a/arch/arm/src/stm32/stm32_start.c
+++ b/arch/arm/src/stm32/stm32_start.c
@@ -306,6 +306,6 @@ void __start(void)
 
   /* Shoulnd't get here */
 
-  for(;;);
+  for (;;);
 #endif
 }
diff --git a/arch/arm/src/tiva/tiva_start.c b/arch/arm/src/tiva/tiva_start.c
index 2c0c6999c1..ed63815541 100644
--- a/arch/arm/src/tiva/tiva_start.c
+++ b/arch/arm/src/tiva/tiva_start.c
@@ -165,5 +165,5 @@ void __start(void)
 
   /* Shoulnd't get here */
 
-  for(;;);
+  for (;;);
 }
diff --git a/arch/avr/src/common/up_assert.c b/arch/avr/src/common/up_assert.c
index c66ce0fcab..7aac46c2a3 100644
--- a/arch/avr/src/common/up_assert.c
+++ b/arch/avr/src/common/up_assert.c
@@ -105,7 +105,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/hc/src/m9s12/m9s12_assert.c b/arch/hc/src/m9s12/m9s12_assert.c
index e62bdd5f65..b977f88220 100644
--- a/arch/hc/src/m9s12/m9s12_assert.c
+++ b/arch/hc/src/m9s12/m9s12_assert.c
@@ -280,7 +280,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/mips/src/mips32/up_assert.c b/arch/mips/src/mips32/up_assert.c
index 7673936671..da789ad819 100644
--- a/arch/mips/src/mips32/up_assert.c
+++ b/arch/mips/src/mips32/up_assert.c
@@ -105,7 +105,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/mips/src/mips32/up_vfork.c b/arch/mips/src/mips32/up_vfork.c
index 15fd328129..82b097a263 100644
--- a/arch/mips/src/mips32/up_vfork.c
+++ b/arch/mips/src/mips32/up_vfork.c
@@ -190,7 +190,7 @@ pid_t up_vfork(const struct vfork_s *context)
   /* Make some feeble effort to perserve the stack contents.  This is
    * feeble because the stack surely contains invalid pointers and other
    * content that will not work in the child context.  However, if the
-   * user follows all of the caveats of vfor() usage, even this feeble
+   * user follows all of the caveats of vfork() usage, even this feeble
    * effort is overkill.
    */
 
diff --git a/arch/sh/src/common/up_assert.c b/arch/sh/src/common/up_assert.c
index 12f177e8fe..1c4016665f 100644
--- a/arch/sh/src/common/up_assert.c
+++ b/arch/sh/src/common/up_assert.c
@@ -92,7 +92,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/x86/src/common/up_assert.c b/arch/x86/src/common/up_assert.c
index b67db487b7..8f4f53b9a3 100644
--- a/arch/x86/src/common/up_assert.c
+++ b/arch/x86/src/common/up_assert.c
@@ -242,7 +242,7 @@ static void _up_assert(int errorcode)
   if (current_regs || ((struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/x86/src/qemu/qemu_vga.c b/arch/x86/src/qemu/qemu_vga.c
index fe34382fb7..78cec8121c 100644
--- a/arch/x86/src/qemu/qemu_vga.c
+++ b/arch/x86/src/qemu/qemu_vga.c
@@ -294,12 +294,12 @@ static int init_graph_vga(int width, int height,int chain4)
   outb(val, 0x3c2);
   outw(0x0e11, 0x3d4); /* enable regs 0-7 */
 
-  for(a = 0; a < SZ(g_hor_regs); ++a)
+  for (a = 0; a < SZ(g_hor_regs); ++a)
     {
       outw((uint16_t)((w[a] << 8) + g_hor_regs[a]), 0x3d4);
     }
 
-  for(a = 0; a < SZ(g_ver_regs); ++a)
+  for (a = 0; a < SZ(g_ver_regs); ++a)
     {
       outw((uint16_t)((h[a] << 8) + g_ver_regs[a]), 0x3d4);
     }
@@ -330,7 +330,7 @@ static int init_graph_vga(int width, int height,int chain4)
   outb(0x33, 0x3c0);
   outb(0x00, 0x3c0);
 
-  for(a = 0; a < 16; a++)    /* ega pal */
+  for (a = 0; a < 16; a++)    /* ega pal */
     {
       outb((uint8_t)a, 0x3c0);
       outb((uint8_t)a, 0x3c0);
diff --git a/arch/z16/src/common/up_assert.c b/arch/z16/src/common/up_assert.c
index bc63f9b6c9..d2b64026e5 100644
--- a/arch/z16/src/common/up_assert.c
+++ b/arch/z16/src/common/up_assert.c
@@ -91,7 +91,7 @@ static void _up_assert(int errorcode) /* noreturn_function */
   if (up_interrupt_context() || ((FAR struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/z80/src/common/up_assert.c b/arch/z80/src/common/up_assert.c
index 40907991bd..9bdd5cdf50 100644
--- a/arch/z80/src/common/up_assert.c
+++ b/arch/z80/src/common/up_assert.c
@@ -90,7 +90,7 @@ static void _up_assert(int errorcode) /* noreturn_function */
   if (up_interrupt_context() || ((FAR struct tcb_s*)g_readytorun.head)->pid == 0)
     {
        (void)irqsave();
-        for(;;)
+        for (;;)
           {
 #ifdef CONFIG_ARCH_LEDS
             board_led_on(LED_PANIC);
diff --git a/arch/z80/src/ez80/ez80_spi.c b/arch/z80/src/ez80/ez80_spi.c
index 475c946a58..260bdc777c 100644
--- a/arch/z80/src/ez80/ez80_spi.c
+++ b/arch/z80/src/ez80/ez80_spi.c
@@ -300,7 +300,7 @@ static uint8_t spi_transfer(uint8_t ch)
 
   /* Send the byte, repeating if some error occurs */
 
-  for(;;)
+  for (;;)
     {
       outp(EZ80_SPI_TSR, ch);
 
diff --git a/configs/open1788/src/lpc17_sdraminitialize.c b/configs/open1788/src/lpc17_sdraminitialize.c
index d0081ac18c..1b3063117b 100644
--- a/configs/open1788/src/lpc17_sdraminitialize.c
+++ b/configs/open1788/src/lpc17_sdraminitialize.c
@@ -195,7 +195,7 @@ void open1788_sdram_initialize(void)
 
   /* Wait 128 AHB clock cycles */
 
-  for(i = 0; i < 128; i++);
+  for (i = 0; i < 128; i++);
  
   /* 64ms/8192 = 7.8125us, nx16x8.33ns < 7.8125us, n < 58.6*/
 
diff --git a/configs/us7032evb1/shterm/shterm.c b/configs/us7032evb1/shterm/shterm.c
index 38840bab68..c08b5e17e7 100644
--- a/configs/us7032evb1/shterm/shterm.c
+++ b/configs/us7032evb1/shterm/shterm.c
@@ -665,7 +665,7 @@ int main(int argc, char **argv, char **envp)
 
   /* Loopo until control-C */
 
-  for(;;)
+  for (;;)
     {
       /* Read characters from the console, and echo them to the target tty */
 
diff --git a/configs/vsn/src/power.c b/configs/vsn/src/power.c
index 9cbcfaac86..56991cf334 100644
--- a/configs/vsn/src/power.c
+++ b/configs/vsn/src/power.c
@@ -104,5 +104,5 @@ void board_power_off(void)
 
     // trigger shutdown with pull-up resistor (not push-pull!) and wait.
     stm32_gpiowrite(GPIO_PCLR, true);
-    for(;;);
+    for (;;);
 }
diff --git a/configs/vsn/src/sif.c b/configs/vsn/src/sif.c
index 971c5ca867..0cdf46e05f 100644
--- a/configs/vsn/src/sif.c
+++ b/configs/vsn/src/sif.c
@@ -38,33 +38,33 @@
 /** \file
  *  \author Uros Platise
  *  \brief VSN Sensor Interface
- * 
+ *
  * Public interface:
- *  - sif_init(): should be called just once after system starts, to 
+ *  - sif_init(): should be called just once after system starts, to
  *    initialize internal data structures, device driver and hardware
  *  - individual starts() and stops() that control gpio, usart, i2c, ...
  *    are wrapped throu open() and close()
  *  - read() and write() are used for streaming
- *  - ioctl() for configuration    
- * 
+ *  - ioctl() for configuration
+ *
  * STDOUT Coding 16-bit (little endian):
  *  - MSB = 0 GPIOs, followed by the both GPIO config bytes
  *  - MSB = 1 Input AD, centered around 0x4000
- * 
+ *
  * STDIN Coding 16-bit (little endian):
  *  - MSB = 0 GPIOs, followed by the both GPIO config bytes
  *    - MSB-1 = 0 Analog Output (PWM or Power)
  *    - MSB-1 = 1 Analog Reference Tap
- * 
+ *
  * GPIO Update cycle:
  *  - if they follow the Analog Output, they are synced with them
  *  - if they follow the Analog Reference Tap, they are synced with them
  *  - if either is configured without sample rate value, they are updated
  *    immediately, same as them
- * 
+ *
  * Implementation:
- *  - Complete internal states and updateing is made via the struct 
- *    vsn_sif_s, which is also accessible thru the ioctl() with 
+ *  - Complete internal states and updateing is made via the struct
+ *    vsn_sif_s, which is also accessible thru the ioctl() with
  *    SNP Message descriptor.
  **/
 
@@ -94,8 +94,8 @@
 
 /****************************************************************************
  * Declarations and Structures
- ****************************************************************************/ 
- 
+ ****************************************************************************/
+
 #define VSN_SIF_READ_BUFSIZE    128
 #define VSN_SIF_WRITE_BUFSIZE   128
 
@@ -131,7 +131,7 @@ typedef unsigned char vsn_sif_gpio_t;
 #define VSN_SIF_ANOUT_LOW       0	// Pseudo Analog Output acts as GPIO
 #define VSN_SIF_ANOUT_HIGH      1	// Pseudo Analog Output acts as GPIO high
 #define	VSN_SIF_ANOUT_HIGHPWR   2	// ... acts as high power output
-#define VSN_SIF_ANOUT_PWM       3	// ... acts as PWM output 
+#define VSN_SIF_ANOUT_PWM       3	// ... acts as PWM output
 #define VSN_SIF_ANOUT_PWMPWR    4	// acts as power PWM output
 
 #define VSN_SIF_ANIN_GAINMASK   7
@@ -160,7 +160,7 @@ typedef unsigned char vsn_sif_gpio_t;
 
 
 struct vsn_sif_s {
-    vsn_sif_state_t     state;              // activity 
+    vsn_sif_state_t     state;              // activity
     unsigned char       opencnt;            // open count
 	
     vsn_sif_gpio_t      gpio[2];
@@ -173,68 +173,62 @@ struct vsn_sif_s {
     unsigned short int  anref_width;
     unsigned short int  anref_period;       // setting it to 0, disables PWM
     unsigned short int  anref_samplerate;   // as written by write()
-    
+
     unsigned char       anin_opts;
     unsigned int        anin_samplerate;    // returned on read() as 16-bit results
-    
+
         /*--- Private Data ---*/
-    
+
     struct stm32_tim_dev_s * tim3;          // Timer3 is used for PWM, and Analog RefTap
     struct stm32_tim_dev_s * tim8;          // Timer8 is used for Power Switch
-    
+
     struct i2c_dev_s    * i2c1;
     struct i2c_dev_s    * i2c2;
-    
+
     struct spi_dev_s    * spi2;
-    
+
     sem_t               exclusive_access;
 };
 
-
 /****************************************************************************
  * Private data
- ****************************************************************************/ 
+ ****************************************************************************/
 
 struct vsn_sif_s vsn_sif;
 
-
 /****************************************************************************
  * Semaphores
- ****************************************************************************/ 
+ ****************************************************************************/
 
 void sif_sem_wait(void)
 {
-    while (sem_wait( &vsn_sif.exclusive_access ) != 0)
+    while (sem_wait(&vsn_sif.exclusive_access) != 0)
       {
         ASSERT(errno == EINTR);
       }
 }
 
-
 void inline sif_sem_post(void)
 {
-    sem_post( &vsn_sif.exclusive_access );
+    sem_post(&vsn_sif.exclusive_access);
 }
 
-
 /****************************************************************************
  * GPIOs and Alternative Functions
- ****************************************************************************/ 
-
+ ****************************************************************************/
 
 void sif_gpios_reset(void)
 {
     vsn_sif.gpio[0] = vsn_sif.gpio[1] = VSN_SIF_GPIO_HIGHZ;
-    
+
     stm32_configgpio(GPIO_GP1_HIZ);
     stm32_configgpio(GPIO_GP2_HIZ);
 }
 
-
 void sif_gpio1_update(void)
 {
     uint32_t val;
-    
+
     switch(vsn_sif.gpio[0] & VSN_SIF_GPIO_STATE_MASK) {
         case VSN_SIF_GPIO_HIGHZ:    val = GPIO_GP1_HIZ; break;
         case VSN_SIF_GPIO_PULLUP:   val = GPIO_GP1_PUP; break;
@@ -245,17 +239,16 @@ void sif_gpio1_update(void)
     }
     if (stm32_configgpio(val) == ERROR)
         printf("Error updating1\n");
-    
-    if ( stm32_gpioread(val) ) 
+
+    if (stm32_gpioread(val))
         vsn_sif.gpio[0] |= VSN_SIF_GPIO_READ_MASK;
     else vsn_sif.gpio[0] &= ~VSN_SIF_GPIO_READ_MASK;
 }
 
-
 void sif_gpio2_update(void)
 {
     uint32_t val;
-    
+
     switch(vsn_sif.gpio[1]) {
         case VSN_SIF_GPIO_HIGHZ:    val = GPIO_GP2_HIZ; break;
         case VSN_SIF_GPIO_PULLUP:   val = GPIO_GP2_PUP; break;
@@ -266,13 +259,12 @@ void sif_gpio2_update(void)
     }
     if (stm32_configgpio(val) == ERROR)
         printf("Error updating2\n");
-    
-    if ( stm32_gpioread(val) ) 
+
+    if (stm32_gpioread(val))
         vsn_sif.gpio[1] |= VSN_SIF_GPIO_READ_MASK;
     else vsn_sif.gpio[1] &= ~VSN_SIF_GPIO_READ_MASK;
 }
 
-
 int sif_gpios_lock(vsn_sif_state_t peripheral)
 {
     return ERROR;
@@ -284,15 +276,11 @@ int sif_gpios_unlock(vsn_sif_state_t peripheral)
     return ERROR;
 }
 
-
-
-
 /****************************************************************************
  * Analog Outputs
- ****************************************************************************/ 
- 
-static volatile int test = 0, teirq;
+ ****************************************************************************/
 
+static volatile int test = 0, teirq;
 
 static int sif_anout_isr(int irq, void *context)
 {
@@ -300,42 +288,41 @@ static int sif_anout_isr(int irq, void *context)
 
     test++;
     teirq = irq;
-    
+
     return OK;
 }
 
-
 int sif_anout_init(void)
 {
     vsn_sif.tim3 = stm32_tim_init(3);
     vsn_sif.tim8 = stm32_tim_init(8);
-        
+
     if (!vsn_sif.tim3 || !vsn_sif.tim8) return ERROR;
-    
+
     // Use the TIM3 as PWM modulated analogue output
-    
+
     STM32_TIM_SETPERIOD(vsn_sif.tim3, 5);
     STM32_TIM_SETCOMPARE(vsn_sif.tim3, GPIO_OUT_PWM_TIM3_CH, 3);
 
     STM32_TIM_SETCLOCK(vsn_sif.tim3, 36e6);
     STM32_TIM_SETMODE(vsn_sif.tim3, STM32_TIM_MODE_UP);
     STM32_TIM_SETCHANNEL(vsn_sif.tim3, GPIO_OUT_PWM_TIM3_CH, STM32_TIM_CH_OUTPWM | STM32_TIM_CH_POLARITY_NEG);
-    
+
     // Use the TIM8 to drive the upper power mosfet
-    
+
     STM32_TIM_SETISR(vsn_sif.tim8, sif_anout_isr, 0);
     STM32_TIM_ENABLEINT(vsn_sif.tim8, 0);
-    
+
     STM32_TIM_SETPERIOD(vsn_sif.tim8, 4096);
     STM32_TIM_SETCOMPARE(vsn_sif.tim8, GPIO_OUT_PWRPWM_TIM8_CH, 5000);
-    
+
     STM32_TIM_SETCLOCK(vsn_sif.tim8, 36e6);
     STM32_TIM_SETMODE(vsn_sif.tim8, STM32_TIM_MODE_UP);
     //STM32_TIM_SETCHANNEL(vsn_sif.tim8, GPIO_OUT_PWRPWM_TIM8_CH, STM32_TIM_CH_OUTPWM | STM32_TIM_CH_POLARITY_NEG);
 
     vsn_sif.i2c1 = up_i2cinitialize(1);
     vsn_sif.i2c2 = up_i2cinitialize(2);
-    
+
     vsn_sif.spi2 = up_spiinitialize(2);
 
     return OK;
@@ -346,43 +333,39 @@ void sif_anout_update(void)
 {
 }
 
-
 void sif_anout_callback(void)
 {
-	// called at rate of PWM interrupt
+  // called at rate of PWM interrupt
 }
 
-
 /****************************************************************************
  * Analog Input Reference Tap
- ****************************************************************************/ 
-
+ ****************************************************************************/
 
 void sif_anref_init(void)
 {
 }
 
-
 /****************************************************************************
  * Analog Input Sampler Unit
- ****************************************************************************/ 
+ ****************************************************************************/
 
 #if 0
 /**
  * Gain is set using the shared multiplexed bus with the SDIO card.
  * The following rules apply for the SDcard:
- * 
+ *
  *  - CMD serial line always starts with 0 (start-bit) and ends with 1 (stop-bit)
- *    The total length is always 48 bits protected by CRCs. When changing the 
+ *    The total length is always 48 bits protected by CRCs. When changing the
  *    gain, CMD must be seen as 1 on CK changes.
- * 
+ *
  *  - An alternative mechanism would be to use suspend/resume commands
- * 
+ *
  *  - If SDcard internal shift-register is 8-bit oriented there might be a need
- *    to shift 7 dummy bits to properly detect invalid start of packet 
- *    (with start bit set as 1) to invalidate bus transitions (in case CK 
+ *    to shift 7 dummy bits to properly detect invalid start of packet
+ *    (with start bit set as 1) to invalidate bus transitions (in case CK
  *    is changing).
- * 
+ *
  * SDIO returns the bus in HiZ states, where CLK = 0, D = CMD = external pull-up
  */
 int sif_anin_setgain(int gain)
@@ -390,92 +373,88 @@ int sif_anin_setgain(int gain)
     /* Shutdown the PGA and exit if gain is invalid */
 
     stm32_gpiowrite(GPIO_PGIA_AEN, FALSE);
-    
+
     if (gain < 0 || gain > 7)
         return -1;
-    
+
     sdio_gpio_request();
-    
+
     /* If we have to set CLK = 1, made that first as D, CMD are 1 by pull-ups */
-    
+
     if (gain & 2)
         stm32_configgpio(GPIO_PGIA_A1_H);
     else stm32_configgpio(GPIO_PGIA_A1_L);
-    
+
     /* Set the D and CMD bits */
-    
+
     if (gain & 1)
         stm32_configgpio(GPIO_PGIA_A0_H);
     else stm32_configgpio(GPIO_PGIA_A0_L);
-        
+
     if (gain & 4)
         stm32_configgpio(GPIO_PGIA_A2_H);
     else stm32_configgpio(GPIO_PGIA_A2_L);
-    
+
     /* Sample GAIN on rising edge */
-    
+
     stm32_gpiowrite(GPIO_PGIA_AEN, TRUE);
-    
+
     /* Release D and CMD pins to 1; however shorten rising edge actively */
-    
+
     stm32_gpiowrite(GPIO_PGIA_A0_H, TRUE);
     stm32_gpiowrite(GPIO_PGIA_A2_H, TRUE);
-    
+
     stm32_unconfiggpio(GPIO_PGIA_A0_H);
     stm32_unconfiggpio(GPIO_PGIA_A2_H);
-    
+
     /* Release CLK by going down  */
-    
-    stm32_unconfiggpio(GPIO_PGIA_A1_L);    
-    
+
+    stm32_unconfiggpio(GPIO_PGIA_A1_L);
+
     sdio_gpio_release();
-    
+
     return gain;
 }
 #endif
 
-
 int sif_anin_reset(void)
 {
     return OK;
 }
 
-
 /****************************************************************************
  * Device driver functions
- ****************************************************************************/ 
+ ****************************************************************************/
 
 int devsif_open(FAR struct file *filep)
 {
     sif_sem_wait();
     vsn_sif.opencnt++;
-    
+
     // Start Hardware
-        
+
     sif_sem_post();
     return 0;
 }
 
-
 int devsif_close(FAR struct file *filep)
 {
     sif_sem_wait();
-    
+
     if (--vsn_sif.opencnt) {
-    
+
         // suspend (powerdown) hardware
-        
+
         sif_gpios_reset();
-        
+
         //STM32_TIM_SETCLOCK(vsn_sif.tim3, 0);
         //STM32_TIM_SETCLOCK(vsn_sif.tim8, 0);
     }
-    
+
     sif_sem_post();
     return 0;
 }
 
-
 static ssize_t devsif_read(FAR struct file *filep, FAR char *buffer, size_t len)
 {
     sif_sem_wait();
@@ -484,23 +463,21 @@ static ssize_t devsif_read(FAR struct file *filep, FAR char *buffer, size_t len)
     return len;
 }
 
-
 static ssize_t devsif_write(FAR struct file *filep, FAR const char *buffer, size_t len)
 {
     sif_sem_wait();
-    printf("getpid: %d\n", getpid() );
+    printf("getpid: %d\n", getpid());
     sif_sem_post();
     return len;
 }
 
-
 #ifndef CONFIG_DISABLE_POLL
 static int devsif_poll(FAR struct file *filep, FAR struct pollfd *fds,
                         bool setup)
 {
     if (setup) {
         fds->revents |= (fds->events & (POLLIN|POLLOUT));
-        
+
         if (fds->revents != 0) {
             sem_post(fds->sem);
         }
@@ -509,7 +486,6 @@ static int devsif_poll(FAR struct file *filep, FAR struct pollfd *fds,
 }
 #endif
 
-
 int devsif_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
 {
     sif_sem_wait();
@@ -517,11 +493,9 @@ int devsif_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
     return 0;
 }
 
-
 /****************************************************************************
  * Public Functions
- ****************************************************************************/ 
-
+ ****************************************************************************/
 
 static const struct file_operations devsif_fops = {
     devsif_open,    /* open */
@@ -535,43 +509,41 @@ static const struct file_operations devsif_fops = {
 #endif
 };
 
- 
-/** Bring up the Sensor Interface by initializing all of the desired 
+/** Bring up the Sensor Interface by initializing all of the desired
  *  hardware components.
  **/
-  
+
 int sif_init(void)
 {
     /* Initialize data-structure */
-    
+
     vsn_sif.state   = VSN_SIF_STATE_POWERDOWN;
     vsn_sif.opencnt = 0;
     sem_init(&vsn_sif.exclusive_access, 0, 1);
-    
+
     /* Initialize hardware */
-    
+
     sif_gpios_reset();
-    if ( sif_anout_init() != OK ) return -1;
-    if ( sif_anin_reset() != OK ) return -1;
+    if (sif_anout_init() != OK) return -1;
+    if (sif_anin_reset() != OK) return -1;
 
     /* If everything is okay, register the driver */
-    
+
     (void)register_driver("/dev/sif0", &devsif_fops, 0666, NULL);
     return OK;
 }
 
-
 /** SIF Utility
- * 
+ *
  * Provides direct access to the sensor connector, readings, and diagnostic.
  **/
- 
+
 extern int cc1101_eventcb(int irq, FAR void *context);
- 
+
 int sif_main(int argc, char *argv[])
 {
     if (argc >= 2) {	
-        if (!strcmp(argv[1], "init")) {          
+        if (!strcmp(argv[1], "init")) {
           return sif_init();
         }
         else if (!strcmp(argv[1], "gpio") && argc == 4) {
@@ -579,7 +551,7 @@ int sif_main(int argc, char *argv[])
             vsn_sif.gpio[1] = atoi(argv[3]);
             sif_gpio1_update();
             sif_gpio2_update();
-            printf("GPIO States: %2x %2x\n", vsn_sif.gpio[0], vsn_sif.gpio[1] );
+            printf("GPIO States: %2x %2x\n", vsn_sif.gpio[0], vsn_sif.gpio[1]);
             return 0;
         }
         else if (!strcmp(argv[1], "pwr") && argc == 3) {
@@ -593,12 +565,12 @@ int sif_main(int argc, char *argv[])
             t_set.tv_sec = atoi(argv[2]);
             clock_settime(CLOCK_REALTIME, &t_set);
         }
-        else if (!strcmp(argv[1], "free") ) {
+        else if (!strcmp(argv[1], "free")) {
             uint16_t page = 0, stpage = 0xFFFF;
             int status;
             do {
                 status = up_progmem_ispageerased(page++);
-                
+
                 /* Is this beginning of new free space section */
                 if (status == 0) {
                     if (stpage == 0xFFFF) stpage = page-1;
@@ -613,39 +585,39 @@ int sif_main(int argc, char *argv[])
             while (status >= 0);
             return 0;
         }
-        else if (!strcmp(argv[1], "erase") && argc == 3 ) {
+        else if (!strcmp(argv[1], "erase") && argc == 3) {
             int page = atoi(argv[2]);
-            printf("Erase result: %d\n", up_progmem_erasepage(page) );
+            printf("Erase result: %d\n", up_progmem_erasepage(page));
             return 0;
         }
-        else if (!strcmp(argv[1], "flash") && argc == 3 ) {
+        else if (!strcmp(argv[1], "flash") && argc == 3) {
             uint16_t page = atoi(argv[2]);
             uint32_t addr = page * up_progmem_pagesize(page);
-            
-            printf("Write result: %d (writing to address %xh)\n", 
-                up_progmem_write( addr, "Test", 4 ), addr);
+
+            printf("Write result: %d (writing to address %xh)\n",
+                up_progmem_write(addr, "Test", 4), addr);
             return 0;
         }
         else if (!strcmp(argv[1], "i2c") && argc == 3) {
             int val = atoi(argv[2]);
-            
+
             I2C_SETFREQUENCY(vsn_sif.i2c1, 100000);
-            
+
             struct lis331dl_dev_s * lis = lis331dl_init(vsn_sif.i2c1, val);
 
             if (lis) {
                 const struct lis331dl_vector_s * a;
                 int i;
                 uint32_t time_stamp = clock_systimer();
-                
+
                 /* Set to 400 Hz : 3 = 133 Hz/axis */
-                
+
                 lis331dl_setconversion(lis, false, true);
-                
+
                 /* Sample some values */
-                
-                for (i=0; i<1000; ) {
-                    if ( (a = lis331dl_getreadings(lis)) ) {
+
+                for (i=0; i<1000;) {
+                    if ((a = lis331dl_getreadings(lis))) {
                         i++;
                         printf("%d %d %d\n", a->x, a->y, a->z);
                     }
@@ -654,9 +626,9 @@ int sif_main(int argc, char *argv[])
                         break;
                     }
                 }
-                
+
                 printf("Time diff = %d\n", clock_systimer() - time_stamp);
-                
+
                 lis331dl_deinit(lis);
             }
             else printf("Exit point: errno=%d\n", errno);
@@ -665,7 +637,7 @@ int sif_main(int argc, char *argv[])
         }
         else if (!strcmp(argv[1], "pga")) {
             int gain = atoi(argv[2]);
-            
+
             gain = vsn_muxbus_setpgagain(gain);
 
             printf("Gain changed: %d\n", gain);
@@ -675,34 +647,34 @@ int sif_main(int argc, char *argv[])
             struct cc1101_dev_s * cc;
             uint8_t buf[64];
             int sta;
-            
+
             cc = cc1101_init(vsn_sif.spi2, CC1101_PIN_GDO0, GPIO_CC1101_GDO0,
                 &cc1101_rfsettings_ISM1_868MHzGFSK100kbps);
-                
+
             if (cc) {
-            
+
                 /* Work-around: enable falling edge, event and interrupt */
                 stm32_gpiosetevent(GPIO_CC1101_GDO0, false, true, true, cc1101_eventcb);
-            
+
                 /* Enable clock to ARM PLL, allowing to speed-up to 72 MHz */
                 cc1101_setgdo(cc, CC1101_PIN_GDO2, CC1101_GDO_CLK_XOSC3);
-                
+
                 cc1101_setchannel(cc, 0);   /* AV Test Hex, receive on that channel */
                 cc1101_receive(cc);          /* Enter RX mode */
-                while (1) 
+                while (1)
                 {
                     fflush(stdout);
                     sta = cc1101_read(cc, buf, 64);
                     if (sta > 0) {
-                        printf("Received %d bytes: rssi=%d [dBm], LQI=%d (CRC %s)\n", 
+                        printf("Received %d bytes: rssi=%d [dBm], LQI=%d (CRC %s)\n",
                             sta, cc1101_calcRSSIdBm(buf[sta-2]), buf[sta-1]&0x7F,
                             (buf[sta-1]&0x80)?"OK":"BAD");
-                            
+
                         cc1101_write(cc, buf, 61);
                         cc1101_send(cc);
-                        
+
                         printf("Packet send back\n");
-                            
+
                         cc1101_receive(cc);
                     }
                 }
@@ -711,12 +683,12 @@ int sif_main(int argc, char *argv[])
     }
 
     fprintf(stderr, "%s:\tinit\n\tgpio\tA B\n\tpwr\tval\n", argv[0]);
-    
+
     struct timespec t_active;
     clock_gettime(CLOCK_ACTIVETIME, &t_active);
-    
-    fprintf(stderr, "rtc time = %u, active = %u / %u, time / systick = %u / %u\n", 
+
+    fprintf(stderr, "rtc time = %u, active = %u / %u, time / systick = %u / %u\n",
         up_rtc_time(), t_active.tv_sec, t_active.tv_nsec,
-        time(NULL), clock_systimer() );
+        time(NULL), clock_systimer());
     return -1;
 }
diff --git a/drivers/lcd/p14201.c b/drivers/lcd/p14201.c
index 6c74a6f7c5..094380b597 100644
--- a/drivers/lcd/p14201.c
+++ b/drivers/lcd/p14201.c
@@ -653,7 +653,7 @@ static inline void rit_clear(FAR struct rit_dev_s *priv)
 
   /* Display each row */
 
-  for(row = 0; row < RIT_YRES; row++)
+  for (row = 0; row < RIT_YRES; row++)
     {
       /* Display a horizontal run */
 
@@ -680,7 +680,7 @@ static inline void rit_clear(FAR struct rit_dev_s *priv)
 
   /* Display each row */
 
-  for(row = 0; row < RIT_YRES; row++)
+  for (row = 0; row < RIT_YRES; row++)
     {
       /* Display a horizontal run */
 
diff --git a/fs/nxffs/nxffs_pack.c b/fs/nxffs/nxffs_pack.c
index 7577aa66ca..373b480bb5 100644
--- a/fs/nxffs/nxffs_pack.c
+++ b/fs/nxffs/nxffs_pack.c
@@ -286,7 +286,7 @@ static inline int nxffs_startpos(FAR struct nxffs_volume_s *volume,
    * compacting.
    */
 
-  for(;;)
+  for (;;)
     {
       /* Is there wasted space between the offset where the we could have
        * valid data and the offset to the beginning of the first valid
diff --git a/libc/net/lib_inetpton.c b/libc/net/lib_inetpton.c
index c5f117535b..a0eca934b2 100644
--- a/libc/net/lib_inetpton.c
+++ b/libc/net/lib_inetpton.c
@@ -133,7 +133,7 @@ int inet_pton(int af, FAR const char *src, FAR void *dst)
   numoffset = 0;
   ndots     = 0;
 
-  for(;;)
+  for (;;)
     {
       ch = (uint8_t)src[srcoffset++];
 
@@ -231,7 +231,7 @@ int inet_pton(int af, FAR const char *src, FAR void *dst)
   nrsep     = 0;
   rtime     = false;
 
-  for(;;)
+  for (;;)
     {
       ch = (uint8_t)src[srcoffset++];
 
diff --git a/libc/queue/sq_rem.c b/libc/queue/sq_rem.c
index 6d234e6b39..2abf6d34e3 100644
--- a/libc/queue/sq_rem.c
+++ b/libc/queue/sq_rem.c
@@ -66,7 +66,7 @@ void sq_rem(FAR sq_entry_t *node, sq_queue_t *queue)
       else
         {
           FAR sq_entry_t *prev;
-          for(prev = (FAR sq_entry_t*)queue->head;
+          for (prev = (FAR sq_entry_t*)queue->head;
               prev && prev->flink != node;
               prev = prev->flink);
 
diff --git a/libc/queue/sq_remlast.c b/libc/queue/sq_remlast.c
index 7c9aa7d16c..961da51073 100644
--- a/libc/queue/sq_remlast.c
+++ b/libc/queue/sq_remlast.c
@@ -65,7 +65,7 @@ FAR sq_entry_t *sq_remlast(sq_queue_t *queue)
       else
         {
           FAR sq_entry_t *prev;
-          for(prev = queue->head;
+          for (prev = queue->head;
               prev && prev->flink != ret;
               prev = prev->flink);
 
diff --git a/libc/stdio/lib_libfgets.c b/libc/stdio/lib_libfgets.c
index b6229a4e7b..73cf47adc7 100644
--- a/libc/stdio/lib_libfgets.c
+++ b/libc/stdio/lib_libfgets.c
@@ -177,7 +177,7 @@ FAR char *lib_fgets(FAR char *buf, size_t buflen, FILE *stream,
    * the next character and one for the null terminator.
    */
 
-  for(;;)
+  for (;;)
     {
       /* Get the next character */
 
diff --git a/net/uip/uip_neighbor.c b/net/uip/uip_neighbor.c
index ecc45a09ef..0dbb001dda 100644
--- a/net/uip/uip_neighbor.c
+++ b/net/uip/uip_neighbor.c
@@ -58,7 +58,7 @@ void uip_neighbor_init(void)
 {
   int i;
 
-  for(i = 0; i < ENTRIES; ++i)
+  for (i = 0; i < ENTRIES; ++i)
     {
       entries[i].time = MAX_TIME;
     }
@@ -68,7 +68,7 @@ void uip_neighbor_periodic(void)
 {
   int i;
 
-  for(i = 0; i < ENTRIES; ++i)
+  for (i = 0; i < ENTRIES; ++i)
     {
       if (entries[i].time < MAX_TIME)
         {
@@ -125,7 +125,7 @@ static struct neighbor_entry *find_entry(uip_ipaddr_t ipaddr)
 {
   int i;
 
-  for(i = 0; i < ENTRIES; ++i)
+  for (i = 0; i < ENTRIES; ++i)
     {
       if (uip_ipaddr_cmp(entries[i].ipaddr, ipaddr))
         {
diff --git a/sched/sig_dispatch.c b/sched/sig_dispatch.c
index 82c891b46d..e59d0e73c3 100644
--- a/sched/sig_dispatch.c
+++ b/sched/sig_dispatch.c
@@ -220,9 +220,9 @@ static FAR sigpendq_t *sig_findpendingsignal(FAR struct task_group_s *group,
 
   /* Seach the list for a sigpendion on this signal */
 
-  for(sigpend = (FAR sigpendq_t*)group->sigpendingq.head;
-      (sigpend && sigpend->info.si_signo != signo);
-      sigpend = sigpend->flink);
+  for (sigpend = (FAR sigpendq_t*)group->sigpendingq.head;
+       (sigpend && sigpend->info.si_signo != signo);
+       sigpend = sigpend->flink);
 
   irqrestore(saved_state);
   return sigpend;
diff --git a/sched/sig_findaction.c b/sched/sig_findaction.c
index c36c8fbfb2..b701d3232e 100644
--- a/sched/sig_findaction.c
+++ b/sched/sig_findaction.c
@@ -89,7 +89,7 @@ FAR sigactq_t *sig_findaction(FAR struct tcb_s *stcb, int signo)
 
       /* Seach the list for a sigaction on this signal */
 
-      for(sigact = (FAR sigactq_t*)stcb->sigactionq.head;
+      for (sigact = (FAR sigactq_t*)stcb->sigactionq.head;
           ((sigact) && (sigact->signo != signo));
           sigact = sigact->flink);
 
diff --git a/tools/kconfig2html.c b/tools/kconfig2html.c
index a09fb67b6b..ef34e75b21 100644
--- a/tools/kconfig2html.c
+++ b/tools/kconfig2html.c
@@ -690,7 +690,7 @@ static char *read_line(FILE *stream)
 
   /* Loop to handle continuation lines */
 
-  for(;;)
+  for (;;)
     {
       /* How long is the line so far? */