Merge pull request #7170 from smlng/enh/drivers/coding_style

drivers: coding style, use {} for empty while loops

drivers/at86rf2xx/at86rf2xx_getset.c

@@ -438,7 +438,7 @@ static inline void _set_state(at86rf2xx_t *dev, uint8_t state, uint8_t cmd)
      * in https://github.com/RIOT-OS/RIOT/pull/5244
      */
     if (state != AT86RF2XX_STATE_RX_AACK_ON) {
-        while (at86rf2xx_get_status(dev) != state);
+        while (at86rf2xx_get_status(dev) != state) {}
     }
 
     dev->state = state;

drivers/at86rf2xx/at86rf2xx_internal.c

@@ -224,8 +224,7 @@ void at86rf2xx_get_random(at86rf2xx_t *dev, uint8_t *data, const size_t len)
 
 void at86rf2xx_force_trx_off(const at86rf2xx_t *dev)
 {
-    at86rf2xx_reg_write(dev,
-                        AT86RF2XX_REG__TRX_STATE,
+    at86rf2xx_reg_write(dev, AT86RF2XX_REG__TRX_STATE,
                         AT86RF2XX_TRX_STATE__FORCE_TRX_OFF);
-    while (at86rf2xx_get_status(dev) != AT86RF2XX_STATE_TRX_OFF);
+    while (at86rf2xx_get_status(dev) != AT86RF2XX_STATE_TRX_OFF) {}
 }

drivers/cc110x/cc110x-rxtx.c

@@ -152,8 +152,7 @@ static void _rx_continue(cc110x_t *dev, void(*callback)(void*), void*arg)
 
     do {
         _rx_read_data(dev, callback, arg);
-    }
-    while (gpio_read(dev->params.gdo2));
+    } while (gpio_read(dev->params.gdo2));
 }
 
 static void _tx_abort(cc110x_t *dev)

drivers/dht/dht.c

@@ -49,9 +49,9 @@ static uint16_t read(gpio_t pin, int bits)
         res <<= 1;
         /* measure the length between the next rising and falling flanks (the
          * time the pin is high - smoke up :-) */
-        while (!gpio_read(pin));
+        while (!gpio_read(pin)) {}
         start = xtimer_now_usec();
-        while (gpio_read(pin));
+        while (gpio_read(pin)) {}
         end = xtimer_now_usec();
         /* if the high phase was more than 40us, we got a 1 */
         if ((end - start) > PULSE_WIDTH_THRESHOLD) {
@@ -95,8 +95,8 @@ int dht_read(dht_t *dev, int16_t *temp, int16_t *hum)
 
     /* sync on device */
     gpio_init(dev->pin, dev->in_mode);
-    while (!gpio_read(dev->pin)) ;
-    while (gpio_read(dev->pin)) ;
+    while (!gpio_read(dev->pin)) {}
+    while (gpio_read(dev->pin)) {}
 
     /*
      * data is read in sequentially, highest bit first:

drivers/enc28j60/enc28j60.c

@@ -177,7 +177,7 @@ static uint16_t cmd_r_phy(enc28j60_t *dev, uint8_t reg)
     /* trigger register read and wait for results */
     cmd_wcr(dev, REG_B2_MICMD, 2, MICMD_MIIRD);
     cmd_wcr(dev, REG_B2_MICMD, 2, 0x00);
-    while (cmd_rcr_miimac(dev, REG_B3_MISTAT, 3) & MISTAT_BUSY);
+    while (cmd_rcr_miimac(dev, REG_B3_MISTAT, 3) & MISTAT_BUSY) {}
     /* results */
     uint8_t low = cmd_rcr_miimac(dev, REG_B2_MIRDL, 2);
     uint8_t high = cmd_rcr_miimac(dev, REG_B2_MIRDH, 2);
@@ -191,7 +191,7 @@ static void cmd_w_phy(enc28j60_t *dev, uint8_t reg, uint16_t val)
     cmd_wcr(dev, REG_B2_MIWRL, 2, (val & 0xff));
     cmd_wcr(dev, REG_B2_MIWRH, 2, (val >> 8));
     /* wait until the transaction is finished */
-    while (cmd_rcr_miimac(dev, REG_B3_MISTAT, 3) & MISTAT_BUSY);
+    while (cmd_rcr_miimac(dev, REG_B3_MISTAT, 3) & MISTAT_BUSY) {}
 }
 
 static void cmd_rbm(enc28j60_t *dev, uint8_t *data, size_t len)

drivers/encx24j600/encx24j600.c

@@ -255,7 +255,7 @@ static int _init(netdev_t *encdev)
             xtimer_usleep(ENCX24J600_INIT_DELAY);
         } while (reg_get(dev, ENC_EUDAST) != 0x1234);
 
-        while (!(reg_get(dev, ENC_ESTAT) & ENC_CLKRDY));
+        while (!(reg_get(dev, ENC_ESTAT) & ENC_CLKRDY)) {}
 
         /* issue System Reset */
         cmd(dev, ENC_SETETHRST);
@@ -296,7 +296,7 @@ static int _send(netdev_t *netdev, const struct iovec *vector, unsigned count) {
     lock(dev);
 
     /* wait until previous packet has been sent */
-    while ((reg_get(dev, ENC_ECON1) & ENC_TXRTS));
+    while ((reg_get(dev, ENC_ECON1) & ENC_TXRTS)) {}
 
     /* copy packet to SRAM */
     size_t len = 0;
@@ -315,7 +315,7 @@ static int _send(netdev_t *netdev, const struct iovec *vector, unsigned count) {
 
     /* wait for sending to complete */
     /* (not sure if it is needed, keeping the line uncommented) */
-    /*while ((reg_get(dev, ENC_ECON1) & ENC_TXRTS));*/
+    /*while ((reg_get(dev, ENC_ECON1) & ENC_TXRTS)) {}*/
 
 #ifdef MODULE_NETSTATS_L2
     netdev->stats.tx_bytes += len;