[PATCH] staging: pi433: style fixes for conditionals

From: Frank Jozsa
Date: Mon Aug 07 2017 - 19:52:04 EST

Cleans up some incongruous braces

Signed-off-by: Frank Jozsa <frozsak@xxxxxxxxxxxx>
---
drivers/staging/pi433/pi433_if.c | 203 +++++++++++++++------------------------
1 file changed, 78 insertions(+), 125 deletions(-)

diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index ed737f4b1e77..542a9bb92d41 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -133,19 +133,14 @@ DIO0_irq_handler(unsigned int irq, void *dev_id, struct pt_regs *regs)
{
struct pi433_device *device = dev_id;

- if (device->irq_state[DIO0] == DIO_PacketSent)
- {
+ if (device->irq_state[DIO0] == DIO_PacketSent) {
device->free_in_fifo = FIFO_SIZE;
printk("DIO0 irq: Packet sent\n"); // TODO: printk() should include KERN_ facility level
wake_up_interruptible(&device->fifo_wait_queue);
- }
- else if (device->irq_state[DIO0] == DIO_Rssi_DIO0)
- {
+ } else if (device->irq_state[DIO0] == DIO_Rssi_DIO0) {
printk("DIO0 irq: RSSI level over threshold\n");
wake_up_interruptible(&device->rx_wait_queue);
- }
- else if (device->irq_state[DIO0] == DIO_PayloadReady)
- {
+ } else if (device->irq_state[DIO0] == DIO_PayloadReady) {
printk("DIO0 irq: PayloadReady\n");
device->free_in_fifo = 0;
wake_up_interruptible(&device->fifo_wait_queue);
@@ -159,14 +154,13 @@ DIO1_irq_handler(unsigned int irq, void *dev_id, struct pt_regs *regs)
{
struct pi433_device *device = dev_id;

- if (device->irq_state[DIO1] == DIO_FifoNotEmpty_DIO1)
- {
+ if (device->irq_state[DIO1] == DIO_FifoNotEmpty_DIO1) {
device->free_in_fifo = FIFO_SIZE;
- }
- else if (device->irq_state[DIO1] == DIO_FifoLevel)
- {
- if (device->rx_active) device->free_in_fifo = FIFO_THRESHOLD - 1;
- else device->free_in_fifo = FIFO_SIZE - FIFO_THRESHOLD - 1;
+ } else if (device->irq_state[DIO1] == DIO_FifoLevel) {
+ if (device->rx_active)
+ device->free_in_fifo = FIFO_THRESHOLD - 1;
+ else
+ device->free_in_fifo = FIFO_SIZE - FIFO_THRESHOLD - 1;
}
printk("DIO1 irq: %d bytes free in fifo\n", device->free_in_fifo); // TODO: printk() should include KERN_ facility level
wake_up_interruptible(&device->fifo_wait_queue);
@@ -202,12 +196,9 @@ rf69_set_rx_cfg(struct pi433_device *dev, struct pi433_rx_cfg *rx_cfg)
/* packet config */
/* enable */
SET_CHECKED(rf69_set_sync_enable(dev->spi, rx_cfg->enable_sync));
- if (rx_cfg->enable_sync == optionOn)
- {
+ if (rx_cfg->enable_sync == optionOn) {
SET_CHECKED(rf69_set_fifo_fill_condition(dev->spi, afterSyncInterrupt));
- }
- else
- {
+ } else {
SET_CHECKED(rf69_set_fifo_fill_condition(dev->spi, always));
}
SET_CHECKED(rf69_set_packet_format (dev->spi, rx_cfg->enable_length_byte));
@@ -216,29 +207,24 @@ 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 == optionOn)
- {
+ if (rx_cfg->enable_length_byte == optionOn) {
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 == optionOn) payload_length++;
- if (rx_cfg->enable_address_filtering != filteringOff) payload_length++;
+ if (rx_cfg->enable_length_byte == optionOn)
+ 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));
}

/* values */
- if (rx_cfg->enable_sync == optionOn)
- {
+ if (rx_cfg->enable_sync == optionOn) {
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));
}
@@ -258,12 +244,9 @@ rf69_set_tx_cfg(struct pi433_device *dev, struct pi433_tx_cfg *tx_cfg)
SET_CHECKED(rf69_set_tx_start_condition(dev->spi, tx_cfg->tx_start_condition));

/* packet format enable */
- if (tx_cfg->enable_preamble == optionOn)
- {
+ if (tx_cfg->enable_preamble == optionOn) {
SET_CHECKED(rf69_set_preamble_length(dev->spi, tx_cfg->preamble_length));
- }
- else
- {
+ } else {
SET_CHECKED(rf69_set_preamble_length(dev->spi, 0));
}
SET_CHECKED(rf69_set_sync_enable (dev->spi, tx_cfg->enable_sync));
@@ -271,8 +254,7 @@ rf69_set_tx_cfg(struct pi433_device *dev, struct pi433_tx_cfg *tx_cfg)
SET_CHECKED(rf69_set_crc_enable (dev->spi, tx_cfg->enable_crc));

/* configure sync, if enabled */
- if (tx_cfg->enable_sync == optionOn)
- {
+ if (tx_cfg->enable_sync == optionOn) {
SET_CHECKED(rf69_set_sync_size(dev->spi, tx_cfg->sync_length));
SET_CHECKED(rf69_set_sync_values(dev->spi, tx_cfg->sync_pattern));
}
@@ -293,7 +275,8 @@ pi433_start_rx(struct pi433_device *dev)

/* setup for receiving */
retval = rf69_set_rx_cfg(dev, &dev->rx_cfg);
- if (retval) return retval;
+ if (retval)
+ return retval;

/* setup rssi irq */
SET_CHECKED(rf69_set_dio_mapping(dev->spi, DIO0, DIO_Rssi_DIO0));
@@ -370,32 +353,27 @@ 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 == optionOn)
- {
+ if (dev->rx_cfg.enable_length_byte == optionOn) {
retval = wait_event_interruptible(dev->fifo_wait_queue,
dev->free_in_fifo < FIFO_SIZE);
- if (retval) goto abort; /* wait was interrupted */
+ if (retval)
+ goto abort; /* wait was interrupted */

rf69_read_fifo(spi, (u8 *)&bytes_total, 1);
- if (bytes_total > dev->rx_buffer_size)
- {
+ if (bytes_total > dev->rx_buffer_size) {
retval = -1;
goto abort;
}
@@ -404,15 +382,15 @@ 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--;

retval = wait_event_interruptible(dev->fifo_wait_queue,
dev->free_in_fifo < FIFO_SIZE);
- if (retval) goto abort; /* wait was interrupted */
+ if (retval)
+ goto abort; /* wait was interrupted */

rf69_read_fifo(spi, &dummy, 1);
dev->free_in_fifo++;
@@ -422,11 +400,11 @@ pi433_receive(void *data)
/* get payload */
while (dev->rx_position < bytes_total)
{
- if ( !rf69_get_flag(dev->spi, payloadReady) )
- {
+ 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 */
+ if (retval)
+ goto abort; /* wait was interrupted */
}

/* need to drop bytes or acquire? */
@@ -495,16 +473,14 @@ pi433_tx_thread(void *data)
mutex_lock(&device->tx_fifo_lock);

retval = kfifo_out(&device->tx_fifo, &tx_cfg, sizeof(tx_cfg));
- if (retval != sizeof(tx_cfg))
- {
+ if (retval != sizeof(tx_cfg)) {
dev_dbg(device->dev, "reading tx_cfg from fifo failed: got %d byte(s), expected %d", retval, (unsigned int)sizeof(tx_cfg) );
mutex_unlock(&device->tx_fifo_lock);
continue;
}

retval = kfifo_out(&device->tx_fifo, &size, sizeof(size_t));
- if (retval != sizeof(size_t))
- {
+ if (retval != sizeof(size_t)) {
dev_dbg(device->dev, "reading msg size from fifo failed: got %d, expected %d", retval, (unsigned int)sizeof(size_t) );
mutex_unlock(&device->tx_fifo_lock);
continue;
@@ -555,8 +531,7 @@ pi433_tx_thread(void *data)
disable_irq(device->irq_num[DIO0]);
device->tx_active = true;

- if (device->rx_active && rx_interrupted == false)
- {
+ if (device->rx_active && rx_interrupted == false) {
/* rx is currently waiting for a telegram;
* we need to set the radio module to standby
*/
@@ -567,12 +542,9 @@ pi433_tx_thread(void *data)
/* clear fifo, set fifo threshold, set payload length */
SET_CHECKED(rf69_set_mode(spi, standby)); /* this clears the fifo */
SET_CHECKED(rf69_set_fifo_threshold(spi, FIFO_THRESHOLD));
- if (tx_cfg.enable_length_byte == optionOn)
- {
+ if (tx_cfg.enable_length_byte == optionOn) {
SET_CHECKED(rf69_set_payload_length(spi, size * tx_cfg.repetitions));
- }
- else
- {
+ } else {
SET_CHECKED(rf69_set_payload_length(spi, 0));
}

@@ -599,17 +571,16 @@ pi433_tx_thread(void *data)
repetitions = tx_cfg.repetitions;
while( (repetitions > 0) && (size > position) )
{
- if ( (size - position) > device->free_in_fifo)
- { /* msg to big for fifo - take a part */
+ if ( (size - position) > device->free_in_fifo) {
+ /* msg too 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,
@@ -620,7 +591,10 @@ pi433_tx_thread(void *data)

retval = wait_event_interruptible(device->fifo_wait_queue,
device->free_in_fifo > 0);
- if (retval) { printk("ABORT\n"); goto abort; }
+ if (retval) {
+ printk("ABORT\n");
+ goto abort;
+ }
}

/* we are done. Wait for packet to get sent */
@@ -628,7 +602,8 @@ pi433_tx_thread(void *data)
wait_event_interruptible(device->fifo_wait_queue,
device->free_in_fifo == FIFO_SIZE ||
kthread_should_stop() );
- if ( kthread_should_stop() ) printk("ABORT\n");
+ if ( kthread_should_stop() )
+ printk("ABORT\n");


/* STOP_TRANSMISSION */
@@ -636,11 +611,9 @@ pi433_tx_thread(void *data)
SET_CHECKED(rf69_set_mode(spi, standby));

/* everything sent? */
- if ( kfifo_is_empty(&device->tx_fifo) )
- {
+ if ( kfifo_is_empty(&device->tx_fifo) ){
abort:
- if (rx_interrupted)
- {
+ if (rx_interrupted){
rx_interrupted = false;
pi433_start_rx(device);
}
@@ -669,13 +642,10 @@ 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);
}
@@ -691,8 +661,7 @@ pi433_read(struct file *filp, char __user *buf, size_t size, loff_t *f_pos)
mutex_unlock(&device->rx_lock);

/* if read was successful copy to user space*/
- if (bytes_received > 0)
- {
+ if (bytes_received > 0) {
retval = copy_to_user(buf, device->rx_buffer, bytes_received);
if (retval)
return -EFAULT;
@@ -852,7 +821,7 @@ pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
break;
}

- if ( (tmp == 0) || ((tmp % sizeof(struct pi433_rx_cfg)) != 0) ) {
+ if ((tmp == 0) || ((tmp % sizeof(struct pi433_rx_cfg)) != 0)) {
retval = -EINVAL;
mutex_unlock(&device->rx_lock);
break;
@@ -963,14 +932,12 @@ static int setup_GPIOs(struct pi433_device *device)
int retval;
int i;

- 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*/);

- if (device->gpiod[i] == ERR_PTR(-ENOENT))
- {
+ if (device->gpiod[i] == ERR_PTR(-ENOENT)) {
dev_dbg(&device->spi->dev, "Could not find entry for %s. Ignoring.", name);
continue;
}
@@ -978,12 +945,10 @@ static int setup_GPIOs(struct pi433_device *device)
if (device->gpiod[i] == ERR_PTR(-EBUSY))
dev_dbg(&device->spi->dev, "%s is busy.", name);

- if ( IS_ERR(device->gpiod[i]) )
- {
+ if (IS_ERR(device->gpiod[i])) {
retval = PTR_ERR(device->gpiod[i]);
/* release already allocated gpios */
- for (i--; i>=0; i--)
- {
+ for (i--; i>=0; i--) {
free_irq(device->irq_num[i], device);
gpiod_put(device->gpiod[i]);
}
@@ -994,13 +959,13 @@ static int setup_GPIOs(struct pi433_device *device)
/* configure the pin */
gpiod_unexport(device->gpiod[i]);
retval = gpiod_direction_input(device->gpiod[i]);
- if (retval) return retval;
+ if (retval)
+ return retval;


/* configure irq */
device->irq_num[i] = gpiod_to_irq(device->gpiod[i]);
- if (device->irq_num[i] < 0)
- {
+ if (device->irq_num[i] < 0) {
device->gpiod[i] = ERR_PTR(-EINVAL);//(struct gpio_desc *)device->irq_num[i];
return device->irq_num[i];
}
@@ -1023,10 +988,9 @@ 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]) )
+ if (IS_ERR(device->gpiod[i]))
continue;

free_irq(device->irq_num[i], device);
@@ -1088,13 +1052,10 @@ 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);
@@ -1105,8 +1066,7 @@ static int pi433_probe(struct spi_device *spi)
if (retval < 0)
return retval;

- switch(retval)
- {
+ switch(retval) {
case 0x24:
dev_dbg(&spi->dev, "found pi433 (ver. 0x%x)", retval);
break;
@@ -1140,8 +1100,7 @@ static int pi433_probe(struct spi_device *spi)

/* setup GPIO (including irq_handler) for the different DIOs */
retval = setup_GPIOs(device);
- if (retval)
- {
+ if (retval) {
dev_dbg(&spi->dev, "setup of GPIOs failed");
goto GPIO_failed;
}
@@ -1159,16 +1118,14 @@ static int pi433_probe(struct spi_device *spi)
device->tx_task_struct = kthread_run(pi433_tx_thread,
device,
"pi433_tx_task");
- if (IS_ERR(device->tx_task_struct))
- {
+ if (IS_ERR(device->tx_task_struct)) {
dev_dbg(device->dev, "start of send thread failed");
goto send_thread_failed;
}

/* determ minor number */
retval = pi433_get_minor(device);
- if (retval)
- {
+ if (retval) {
dev_dbg(device->dev, "get of minor number failed");
goto minor_failed;
}
@@ -1184,8 +1141,7 @@ static int pi433_probe(struct spi_device *spi)
pr_err("pi433: device register failed\n");
retval = PTR_ERR(device->dev);
goto device_create_failed;
- }
- else {
+ } else {
dev_dbg(device->dev,
"created device for major %d, minor %d\n",
MAJOR(pi433_dev),
@@ -1197,8 +1153,7 @@ static int pi433_probe(struct spi_device *spi)
device->cdev->owner = THIS_MODULE;
cdev_init(device->cdev, &pi433_fops);
retval = cdev_add(device->cdev, device->devt, 1);
- if (retval)
- {
+ if (retval) {
dev_dbg(device->dev, "register of cdev failed");
goto cdev_failed;
}
@@ -1290,15 +1245,13 @@ static int __init pi433_init(void)
return status;

pi433_class = class_create(THIS_MODULE, "pi433");
- if (IS_ERR(pi433_class))
- {
+ if (IS_ERR(pi433_class)) {
unregister_chrdev(MAJOR(pi433_dev), pi433_spi_driver.driver.name);
return PTR_ERR(pi433_class);
}

status = spi_register_driver(&pi433_spi_driver);
- if (status < 0)
- {
+ if (status < 0) {
class_destroy(pi433_class);
unregister_chrdev(MAJOR(pi433_dev), pi433_spi_driver.driver.name);
}
--
2.14.0