[PATCH] Staging: pi433: Coding style fixes

From: Simo Koskinen
Date: Tue Jul 18 2017 - 08:41:58 EST

Fixes if-statement related warning and errors reported
by checkpatch.pl

Signed-off-by: Simo Koskinen <koskisoft@xxxxxxxxx>
---
drivers/staging/pi433/pi433_if.c | 253 +++++++++++++++++----------------------
drivers/staging/pi433/rf69.c | 69 ++++++-----
2 files changed, 148 insertions(+), 174 deletions(-)

diff --git a/drivers/staging/pi433/pi433_if.c b/drivers/staging/pi433/pi433_if.c
index 1bc478a..3e4be2e 100644
--- a/drivers/staging/pi433/pi433_if.c
+++ b/drivers/staging/pi433/pi433_if.c
@@ -131,19 +131,14 @@ 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);
@@ -157,15 +152,15 @@ 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);

@@ -200,43 +195,38 @@ 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));
SET_CHECKED(rf69_set_adressFiltering(dev->spi, rx_cfg->enable_address_filtering));
SET_CHECKED(rf69_set_crc_enable (dev->spi, rx_cfg->enable_crc));

/* 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)
- {
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));
}
@@ -256,21 +246,18 @@ 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));
SET_CHECKED(rf69_set_packet_format(dev->spi, tx_cfg->enable_length_byte));
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));
}
@@ -291,7 +278,8 @@ 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));
@@ -326,8 +314,7 @@ pi433_receive(void *data)
/* wait for any tx to finish */
dev_dbg(dev->dev,"rx: going to wait for any tx to finish");
retval = wait_event_interruptible(dev->rx_wait_queue, !dev->tx_active);
- if(retval) /* wait was interrupted */
- {
+ if (retval) { /* wait was interrupted */
dev->interrupt_rx_allowed = true;
wake_up_interruptible(&dev->tx_wait_queue);
return retval;
@@ -355,11 +342,14 @@ pi433_receive(void *data)
retval = wait_event_interruptible(dev->rx_wait_queue,
rf69_get_flag(dev->spi,
rssiExceededThreshold));
- if (retval) goto abort; /* wait was interrupted */
+ if (retval)
+ goto abort; /* wait was interrupted */
+
dev->interrupt_rx_allowed = false;

/* cross check for ongoing tx */
- if (!dev->tx_active) break;
+ if (!dev->tx_active)
+ break;
}

/* configure payload ready irq */
@@ -368,32 +358,27 @@ 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;
}
@@ -402,15 +387,15 @@ 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++;
@@ -420,11 +405,11 @@ 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? */
@@ -440,7 +425,9 @@ pi433_receive(void *data)
retval = rf69_read_fifo(spi,
&dev->rx_buffer[dev->rx_position],
bytes_to_read);
- if (retval) goto abort; /* read failed */
+ if (retval)
+ goto abort; /* read failed */
+
dev->free_in_fifo += bytes_to_read;

/* adjust status vars */
@@ -482,7 +469,7 @@ pi433_tx_thread(void *data)
wait_event_interruptible(device->tx_wait_queue,
( !kfifo_is_empty(&device->tx_fifo) ||
kthread_should_stop() ));
- if ( kthread_should_stop() )
+ if (kthread_should_stop())
return 0;

/* get data from fifo in the following order:
@@ -492,17 +479,18 @@ 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))
- {
- dev_dbg(device->dev, "reading msg size from fifo failed: got %d, expected %d", retval, (unsigned int)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;
}
@@ -550,8 +538,7 @@ 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 */
SET_CHECKED(rf69_set_mode(device->spi, standby));
@@ -561,12 +548,9 @@ 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));
}

@@ -593,17 +577,16 @@ 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 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,
@@ -614,7 +597,10 @@ 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 */
@@ -622,7 +608,8 @@ 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 */
@@ -630,11 +617,9 @@ 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);
}
@@ -663,13 +648,10 @@ 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);
}
@@ -685,8 +667,7 @@ 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 retval;
@@ -717,11 +698,11 @@ pi433_write(struct file *filp, const char __user *buf,
- message */
mutex_lock(&device->tx_fifo_lock);
retval = kfifo_in(&device->tx_fifo, &instance->tx_cfg, sizeof(instance->tx_cfg));
- if ( retval != sizeof(instance->tx_cfg) )
+ if (retval != sizeof(instance->tx_cfg))
goto abort;

retval = kfifo_in (&device->tx_fifo, &count, sizeof(size_t));
- if ( retval != sizeof(size_t) )
+ if (retval != sizeof(size_t))
goto abort;

retval = kfifo_from_user(&device->tx_fifo, buf, count, &copied);
@@ -785,16 +766,14 @@ pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
switch (cmd) {
case PI433_IOC_RD_TX_CFG:
tmp = _IOC_SIZE(cmd);
- if ( (tmp == 0) || ((tmp % sizeof(struct pi433_tx_cfg)) != 0) )
- {
+ if ((tmp == 0) || ((tmp % sizeof(struct pi433_tx_cfg)) != 0)) {
retval = -EINVAL;
break;
}

if (__copy_to_user((void __user *)arg,
&instance->tx_cfg,
- tmp))
- {
+ tmp)) {
retval = -EFAULT;
break;
}
@@ -802,16 +781,14 @@ pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
break;
case PI433_IOC_WR_TX_CFG:
tmp = _IOC_SIZE(cmd);
- if ( (tmp == 0) || ((tmp % sizeof(struct pi433_tx_cfg)) != 0) )
- {
+ if ((tmp == 0) || ((tmp % sizeof(struct pi433_tx_cfg)) != 0)) {
retval = -EINVAL;
break;
}

if (__copy_from_user(&instance->tx_cfg,
(void __user *)arg,
- tmp))
- {
+ tmp)) {
retval = -EFAULT;
break;
}
@@ -820,15 +797,14 @@ pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)

case PI433_IOC_RD_RX_CFG:
tmp = _IOC_SIZE(cmd);
- if ( (tmp == 0) || ((tmp % sizeof(struct pi433_rx_cfg)) != 0) ) {
+ if ((tmp == 0) || ((tmp % sizeof(struct pi433_rx_cfg)) != 0)) {
retval = -EINVAL;
break;
}

if (__copy_to_user((void __user *)arg,
&device->rx_cfg,
- tmp))
- {
+ tmp)) {
retval = -EFAULT;
break;
}
@@ -845,7 +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;
@@ -853,8 +829,7 @@ pi433_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)

if (__copy_from_user(&device->rx_cfg,
(void __user *)arg,
- tmp))
- {
+ tmp)) {
retval = -EFAULT;
mutex_unlock(&device->rx_lock);
break;
@@ -896,8 +871,7 @@ static int pi433_open(struct inode *inode, struct file *filp)

if (!device->rx_buffer) {
device->rx_buffer = kmalloc(MAX_MSG_SIZE, GFP_KERNEL);
- if (!device->rx_buffer)
- {
+ if (!device->rx_buffer) {
dev_dbg(device->dev, "open/ENOMEM\n");
return -ENOMEM;
}
@@ -905,8 +879,7 @@ static int pi433_open(struct inode *inode, struct file *filp)

device->users++;
instance = kzalloc(sizeof(*instance), GFP_KERNEL);
- if (!instance)
- {
+ if (!instance) {
kfree(device->rx_buffer);
device->rx_buffer = NULL;
return -ENOMEM;
@@ -962,18 +935,20 @@ static int setup_GPIOs(struct pi433_device *device)
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))
- {
- dev_dbg(&device->spi->dev, "Could not find entry for %s. Ignoring.", name);
+ if (device->gpiod[i] == ERR_PTR(-ENOENT)) {
+ dev_dbg(&device->spi->dev,
+ "Could not find entry for %s. Ignoring.",
+ name);
+
continue;
}

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--)
{
@@ -987,13 +962,13 @@ 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];
}
@@ -1019,7 +994,7 @@ static void free_GPIOs(struct pi433_device *device)
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);
@@ -1081,13 +1056,10 @@ 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);
@@ -1133,8 +1105,7 @@ 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;
}
@@ -1152,16 +1123,14 @@ static int pi433_probe(struct spi_device *spi)
device->tx_task_struct = kthread_run(pi433_tx_thread,
device,
"pi433_tx_task");
- if (device->tx_task_struct < 0)
- {
+ if (device->tx_task_struct < 0) {
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;
}
@@ -1177,8 +1146,7 @@ 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),
@@ -1190,8 +1158,7 @@ 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;
}
@@ -1282,15 +1249,13 @@ 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);
}
diff --git a/drivers/staging/pi433/rf69.c b/drivers/staging/pi433/rf69.c
index e391ce7..011cd1e 100644
--- a/drivers/staging/pi433/rf69.c
+++ b/drivers/staging/pi433/rf69.c
@@ -115,8 +115,7 @@ int rf69_set_modulation_shaping(struct spi_device *spi, enum modShaping modShapi
dev_dbg(&spi->dev, "set: mod shaping");
#endif

- if (rf69_get_modulation(spi) == FSK)
- {
+ if (rf69_get_modulation(spi) == FSK) {
switch (modShaping) {
case shapingOff: return WRITE_REG(REG_DATAMODUL, (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | DATAMODUL_MODULATION_SHAPE_NONE);
case shaping1_0: return WRITE_REG(REG_DATAMODUL, (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | DATAMODUL_MODULATION_SHAPE_1_0);
@@ -124,9 +123,7 @@ int rf69_set_modulation_shaping(struct spi_device *spi, enum modShaping modShapi
case shaping0_3: return WRITE_REG(REG_DATAMODUL, (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | DATAMODUL_MODULATION_SHAPE_0_5);
default: INVALID_PARAM;
}
- }
- else
- {
+ } else {
switch (modShaping) {
case shapingOff: return WRITE_REG(REG_DATAMODUL, (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | DATAMODUL_MODULATION_SHAPE_NONE);
case shapingBR: return WRITE_REG(REG_DATAMODUL, (READ_REG(REG_DATAMODUL) & ~MASK_DATAMODUL_MODULATION_SHAPE) | DATAMODUL_MODULATION_SHAPE_BR);
@@ -150,8 +147,7 @@ int rf69_set_bit_rate(struct spi_device *spi, u16 bitRate)

// check input value
bitRate_min = F_OSC / 8388608; // 8388608 = 2^23;
- if (bitRate < bitRate_min)
- {
+ if (bitRate < bitRate_min) {
dev_dbg(&spi->dev, "setBitRate: illegal input param");
INVALID_PARAM;
}
@@ -164,9 +160,12 @@ int rf69_set_bit_rate(struct spi_device *spi, u16 bitRate)

// transmit to RF 69
retval = WRITE_REG(REG_BITRATE_MSB, msb);
- if (retval) return retval;
+ if (retval)
+ return retval;
+
retval = WRITE_REG(REG_BITRATE_LSB, lsb);
- if (retval) return retval;
+ if (retval)
+ return retval;

return 0;
}
@@ -185,8 +184,8 @@ int rf69_set_deviation(struct spi_device *spi, u32 deviation)
dev_dbg(&spi->dev, "set: deviation");
#endif

- if (deviation < 600 || deviation > 500000) //TODO: Abhäigkeit von Bitrate beachten!!
- {
+ /* todo: abhäigkeit von bitrate beachten!! */
+ if (deviation < 600 || deviation > 500000) {
dev_dbg(&spi->dev, "set_deviation: illegal input param");
INVALID_PARAM;
}
@@ -203,17 +202,19 @@ int rf69_set_deviation(struct spi_device *spi, u32 deviation)
lsb = (f_reg&0xff);

// check msb
- if (msb & !FDEVMASB_MASK)
- {
+ if (msb & !FDEVMASB_MASK) {
dev_dbg(&spi->dev, "set_deviation: err in calc of msb");
INVALID_PARAM;
}

// write to chip
retval = WRITE_REG(REG_FDEV_MSB, msb);
- if (retval) return retval;
+ if (retval)
+ return retval;
+
retval = WRITE_REG(REG_FDEV_LSB, lsb);
- if (retval) return retval;
+ if (retval)
+ return retval;

return 0;
}
@@ -239,8 +240,7 @@ int rf69_set_frequency(struct spi_device *spi, u32 frequency)

// check input value
f_max = f_step * 8388608 / factor;
- if (frequency > f_max)
- {
+ if (frequency > f_max) {
dev_dbg(&spi->dev, "setFrequency: illegal input param");
INVALID_PARAM;
}
@@ -255,11 +255,16 @@ int rf69_set_frequency(struct spi_device *spi, u32 frequency)

// write to chip
retval = WRITE_REG(REG_FRF_MSB, msb);
- if (retval) return retval;
+ if (retval)
+ return retval;
+
retval = WRITE_REG(REG_FRF_MID, mid);
- if (retval) return retval;
+ if (retval)
+ return retval;
+
retval = WRITE_REG(REG_FRF_LSB, lsb);
- if (retval) return retval;
+ if (retval)
+ return retval;

return 0;
}
@@ -438,10 +443,13 @@ int rf69_set_bandwidth_intern(struct spi_device *spi, u8 reg, enum mantisse mant
u8 newValue;

// check value for mantisse and exponent
- if (exponent > 7) INVALID_PARAM;
- if ( (mantisse!=mantisse16) &&
- (mantisse!=mantisse20) &&
- (mantisse!=mantisse24) ) INVALID_PARAM;
+ if (exponent > 7)
+ INVALID_PARAM;
+
+ if ((mantisse != mantisse16) &&
+ (mantisse != mantisse20) &&
+ (mantisse != mantisse24))
+ INVALID_PARAM;

// read old value
newValue = READ_REG(reg);
@@ -546,7 +554,8 @@ int rf69_set_dio_mapping(struct spi_device *spi, u8 DIONumber, u8 value)
#endif

// check DIO number
- if (DIONumber > 5) INVALID_PARAM;
+ if (DIONumber > 5)
+ INVALID_PARAM;

switch (DIONumber) {
case 0: mask=MASK_DIO0; shift=SHIFT_DIO0; regaddr=REG_DIOMAPPING1; break;
@@ -659,7 +668,9 @@ int rf69_set_preamble_length(struct spi_device *spi, u16 preambleLength)

/* transmit to chip */
retval = WRITE_REG(REG_PREAMBLE_MSB, msb);
- if (retval) return retval;
+ if (retval)
+ return retval;
+
retval = WRITE_REG(REG_PREAMBLE_LSB, lsb);

return retval;
@@ -874,8 +885,7 @@ int rf69_read_fifo (struct spi_device *spi, u8 *buffer, unsigned int size)
u8 local_buffer[FIFO_SIZE + 1];
int retval;

- if (size > FIFO_SIZE)
- {
+ if (size > FIFO_SIZE) {
#ifdef DEBUG
dev_dbg(&spi->dev, "read fifo: passed in buffer bigger then internal buffer \n");
#endif
@@ -909,8 +919,7 @@ int rf69_write_fifo(struct spi_device *spi, u8 *buffer, unsigned int size)
char spi_address = REG_FIFO | WRITE_BIT;
u8 local_buffer[FIFO_SIZE + 1];

- if (size > FIFO_SIZE)
- {
+ if (size > FIFO_SIZE) {
#ifdef DEBUG
dev_dbg(&spi->dev, "read fifo: passed in buffer bigger then internal buffer \n");
#endif
--
2.7.4