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device: Const-ify all device driver instance pointers

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Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.

A coccinelle rule is used for this:

@r_const_dev_1
  disable optional_qualifier
@
@@
-struct device *
+const struct device *

@r_const_dev_2
 disable optional_qualifier
@
@@
-struct device * const
+const struct device *

Fixes #27399

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2020-04-30 20:33:38 +02:00 • committed by Carles Cufí
commit e18fcbba5a
1426 changed files with 9356 additions and 8368 deletions
Download patch file Download diff file Expand all files Collapse all files

11
drivers/sensor/dht/dht.c
View file

@ -28,8 +28,8 @@ LOG_MODULE_REGISTER(DHT, CONFIG_SENSOR_LOG_LEVEL);
* @return duration in usec of signal being measured,
* -1 if duration exceeds DHT_SIGNAL_MAX_WAIT_DURATION
*/
static int8_t dht_measure_signal_duration(struct device *dev,
bool active)
static int8_t dht_measure_signal_duration(const struct device *dev,
bool active)
{
struct dht_data *drv_data = dev->data;
const struct dht_config *cfg = dev->config;
@ -57,7 +57,8 @@ static int8_t dht_measure_signal_duration(struct device *dev,
(uint64_t)sys_clock_hw_cycles_per_sec();
}
static int dht_sample_fetch(struct device *dev, enum sensor_channel chan)
static int dht_sample_fetch(const struct device *dev,
enum sensor_channel chan)
{
struct dht_data *drv_data = dev->data;
const struct dht_config *cfg = dev->config;
@ -164,7 +165,7 @@ cleanup:
return ret;
}
static int dht_channel_get(struct device *dev,
static int dht_channel_get(const struct device *dev,
enum sensor_channel chan,
struct sensor_value *val)
{
@ -221,7 +222,7 @@ static const struct sensor_driver_api dht_api = {
.channel_get = &dht_channel_get,
};
static int dht_init(struct device *dev)
static int dht_init(const struct device *dev)
{
int rc = 0;
struct dht_data *drv_data = dev->data;

2
drivers/sensor/dht/dht.h
View file

@ -14,7 +14,7 @@
#define DHT_DATA_BITS_NUM 40
struct dht_data {
struct device *gpio;
const struct device *gpio;
uint8_t sample[4];
};