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Date:   Sat,  9 Dec 2017 12:41:11 -0800
From:   Tomas Marek <marek_tomas@...trum.cz>
To:     gregkh@...uxfoundation.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        marek_tomas@...trum.cz
Subject: [PATCH v3] Staging: pi433: fix brace coding style issues in pi433_if.c

This patch fix several brace on next line, braces not necessary, space
around =/<, and space before/after open/close parenthesis coding style
errors find by checkpatch in pi433_if.c.

Signed-off-by: Tomas Marek <marek_tomas@...trum.cz>
---
Changes in v3:
  - DIO0_irq_handler update reverted - will be submitted in separate
    patch for the sake of clarity.
Changes in v2:
  - DIO0_irq_handler updated - 'if/else if' replaced by 'switch' and
    'dev_dbg_ratelimited' used instead of 'dev_dbg' according to Joe
    Perches suggestion.
  - The removal of braces around SET_CHECKED() reverted - caused syntax
    error and is addressed by another patch
    "[PATCHv2] staging: pi433: pi433_if.c remove SET_CHECKED macro".
---
 drivers/staging/pi433/pi433_if.c | 84 +++++++++++++---------------------------
 1 file changed, 27 insertions(+), 57 deletions(-)

diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index 55ed45f..9822fb8 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -158,12 +158,9 @@ static irqreturn_t DIO1_irq_handler(int irq, void *dev_id)
 {
 	struct pi433_device *device = dev_id;
 
-	if      (device->irq_state[DIO1] == DIO_FIFO_NOT_EMPTY_DIO1)
-	{
+	if (device->irq_state[DIO1] == DIO_FIFO_NOT_EMPTY_DIO1) {
 		device->free_in_fifo = FIFO_SIZE;
-	}
-	else if (device->irq_state[DIO1] == DIO_FIFO_LEVEL)
-	{
+	} else if (device->irq_state[DIO1] == DIO_FIFO_LEVEL) {
 		if (device->rx_active)	device->free_in_fifo = FIFO_THRESHOLD - 1;
 		else			device->free_in_fifo = FIFO_SIZE - FIFO_THRESHOLD - 1;
 	}
@@ -236,19 +233,14 @@ rf69_set_rx_cfg(struct pi433_device *dev, struct pi433_rx_cfg *rx_cfg)
 
 	/* lengths */
 	SET_CHECKED(rf69_set_sync_size(dev->spi, rx_cfg->sync_length));
-	if (rx_cfg->enable_length_byte == OPTION_ON)
-	{
+	if (rx_cfg->enable_length_byte == OPTION_ON) {
 		SET_CHECKED(rf69_set_payload_length(dev->spi, 0xff));
-	}
-	else if (rx_cfg->fixed_message_length != 0)
-	{
+	} else if (rx_cfg->fixed_message_length != 0) {
 		payload_length = rx_cfg->fixed_message_length;
 		if (rx_cfg->enable_length_byte  == OPTION_ON) payload_length++;
 		if (rx_cfg->enable_address_filtering != filteringOff) payload_length++;
 		SET_CHECKED(rf69_set_payload_length(dev->spi, payload_length));
-	}
-	else
-	{
+	} else {
 		SET_CHECKED(rf69_set_payload_length(dev->spi, 0));
 	}
 
@@ -257,8 +249,7 @@ rf69_set_rx_cfg(struct pi433_device *dev, struct pi433_rx_cfg *rx_cfg)
 	{
 		SET_CHECKED(rf69_set_sync_values(dev->spi, rx_cfg->sync_pattern));
 	}
-	if (rx_cfg->enable_address_filtering != filteringOff)
-	{
+	if (rx_cfg->enable_address_filtering != filteringOff) {
 		SET_CHECKED(rf69_set_node_address     (dev->spi, rx_cfg->node_address));
 		SET_CHECKED(rf69_set_broadcast_address(dev->spi, rx_cfg->broadcast_address));
 	}
@@ -394,8 +385,7 @@ pi433_receive(void *data)
 		return retval;
 
 	/* now check RSSI, if low wait for getting high (RSSI interrupt) */
-	while ( !rf69_get_flag(dev->spi, rssiExceededThreshold) )
-	{
+	while (!rf69_get_flag(dev->spi, rssiExceededThreshold))	{
 		/* allow tx to interrupt us while waiting for high RSSI */
 		dev->interrupt_rx_allowed = true;
 		wake_up_interruptible(&dev->tx_wait_queue);
@@ -418,25 +408,20 @@ pi433_receive(void *data)
 	irq_set_irq_type(dev->irq_num[DIO0], IRQ_TYPE_EDGE_RISING);
 
 	/* fixed or unlimited length? */
-	if (dev->rx_cfg.fixed_message_length != 0)
-	{
-		if (dev->rx_cfg.fixed_message_length > dev->rx_buffer_size)
-		{
+	if (dev->rx_cfg.fixed_message_length != 0) {
+		if (dev->rx_cfg.fixed_message_length > dev->rx_buffer_size) {
 			retval = -1;
 			goto abort;
 		}
 		bytes_total = dev->rx_cfg.fixed_message_length;
 		dev_dbg(dev->dev,"rx: msg len set to %d by fixed length", bytes_total);
-	}
-	else
-	{
+	} else {
 		bytes_total = dev->rx_buffer_size;
 		dev_dbg(dev->dev, "rx: msg len set to %d as requested by read", bytes_total);
 	}
 
 	/* length byte enabled? */
-	if (dev->rx_cfg.enable_length_byte == OPTION_ON)
-	{
+	if (dev->rx_cfg.enable_length_byte == OPTION_ON) {
 		retval = wait_event_interruptible(dev->fifo_wait_queue,
 						  dev->free_in_fifo < FIFO_SIZE);
 		if (retval) goto abort; /* wait was interrupted */
@@ -451,8 +436,7 @@ pi433_receive(void *data)
 	}
 
 	/* address byte enabled? */
-	if (dev->rx_cfg.enable_address_filtering != filteringOff)
-	{
+	if (dev->rx_cfg.enable_address_filtering != filteringOff) {
 		u8 dummy;
 
 		bytes_total--;
@@ -467,10 +451,8 @@ pi433_receive(void *data)
 	}
 
 	/* get payload */
-	while (dev->rx_position < bytes_total)
-	{
-		if ( !rf69_get_flag(dev->spi, payloadReady) )
-		{
+	while (dev->rx_position < bytes_total) {
+		if (!rf69_get_flag(dev->spi, payloadReady)) {
 			retval = wait_event_interruptible(dev->fifo_wait_queue,
 							  dev->free_in_fifo < FIFO_SIZE);
 			if (retval) goto abort; /* wait was interrupted */
@@ -524,8 +506,7 @@ pi433_tx_thread(void *data)
 	int    position, repetitions;
 	int    retval;
 
-	while (1)
-	{
+	while (1) {
 		/* wait for fifo to be populated or for request to terminate*/
 		dev_dbg(device->dev, "thread: going to wait for new messages");
 		wait_event_interruptible(device->tx_wait_queue,
@@ -642,19 +623,17 @@ pi433_tx_thread(void *data)
 		device->free_in_fifo = FIFO_SIZE;
 		position = 0;
 		repetitions = tx_cfg.repetitions;
-		while( (repetitions > 0) && (size > position) )
-		{
-			if ( (size - position) > device->free_in_fifo)
-			{	/* msg to big for fifo - take a part */
+		while ((repetitions > 0) && (size > position)) {
+			if ((size - position) > device->free_in_fifo) {
+				/* msg to big for fifo - take a part */
 				int temp = device->free_in_fifo;
 				device->free_in_fifo = 0;
 				rf69_write_fifo(spi,
 				                &buffer[position],
 				                temp);
 				position +=temp;
-			}
-			else
-			{	/* msg fits into fifo - take all */
+			} else {
+				/* msg fits into fifo - take all */
 				device->free_in_fifo -= size;
 				repetitions--;
 				rf69_write_fifo(spi,
@@ -683,8 +662,7 @@ pi433_tx_thread(void *data)
 		/* everything sent? */
 		if (kfifo_is_empty(&device->tx_fifo)) {
 abort:
-			if (rx_interrupted)
-			{
+			if (rx_interrupted) {
 				rx_interrupted = false;
 				pi433_start_rx(device);
 			}
@@ -713,13 +691,10 @@ pi433_read(struct file *filp, char __user *buf, size_t size, loff_t *f_pos)
 
 	/* just one read request at a time */
 	mutex_lock(&device->rx_lock);
-	if (device->rx_active)
-	{
+	if (device->rx_active) {
 		mutex_unlock(&device->rx_lock);
 		return -EAGAIN;
-	}
-	else
-	{
+	} else {
 		device->rx_active = true;
 		mutex_unlock(&device->rx_lock);
 	}
@@ -945,8 +920,7 @@ static int setup_GPIOs(struct pi433_device *device)
 		DIO1_irq_handler
 	};
 
-	for (i=0; i<NUM_DIO; i++)
-	{
+	for (i = 0; i < NUM_DIO; i++) {
 		/* "construct" name and get the gpio descriptor */
 		snprintf(name, sizeof(name), "DIO%d", i);
 		device->gpiod[i] = gpiod_get(&device->spi->dev, name, 0 /*GPIOD_IN*/);
@@ -1002,8 +976,7 @@ static void free_GPIOs(struct pi433_device *device)
 {
 	int i;
 
-	for (i = 0; i < NUM_DIO; i++)
-	{
+	for (i = 0; i < NUM_DIO; i++) {
 		/* check if gpiod is valid */
 		if ( IS_ERR(device->gpiod[i]) )
 			continue;
@@ -1067,13 +1040,10 @@ static int pi433_probe(struct spi_device *spi)
 	/* spi->max_speed_hz = 10000000;  1MHz already set by device tree overlay */
 
 	retval = spi_setup(spi);
-	if (retval)
-	{
+	if (retval) {
 		dev_dbg(&spi->dev, "configuration of SPI interface failed!\n");
 		return retval;
-	}
-	else
-	{
+	} else {
 		dev_dbg(&spi->dev,
 			"spi interface setup: mode 0x%2x, %d bits per word, %dhz max speed",
 			spi->mode, spi->bits_per_word, spi->max_speed_hz);
-- 
2.7.4

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