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random: initialize devices at compile time

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Initialize devices at compile time so that device pointer can be
constified.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This commit is contained in:
Gerard Marull-Paretas 2022-08-17 14:11:58 +02:00 • committed by Carles Cufí
commit 51932c2cec
2 changed files with 4 additions and 3 deletions
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3
subsys/random/rand32_entropy_device.c
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@ -9,7 +9,8 @@
#include <zephyr/drivers/entropy.h> #include <zephyr/drivers/entropy.h>
#include <string.h> #include <string.h>
static const struct device *entropy_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_entropy)); static const struct device *const entropy_dev =
DEVICE_DT_GET(DT_CHOSEN(zephyr_entropy));
#if defined(CONFIG_ENTROPY_DEVICE_RANDOM_GENERATOR) #if defined(CONFIG_ENTROPY_DEVICE_RANDOM_GENERATOR)
uint32_t z_impl_sys_rand32_get(void) uint32_t z_impl_sys_rand32_get(void)

4
subsys/random/rand32_xoshiro128.c
View file

@ -32,7 +32,8 @@
#include <zephyr/kernel.h> #include <zephyr/kernel.h>
#include <string.h> #include <string.h>
static const struct device *entropy_driver; static const struct device *const entropy_driver =
DEVICE_DT_GET(DT_CHOSEN(zephyr_entropy));
static uint32_t state[4]; static uint32_t state[4];
static bool initialized; static bool initialized;
@ -43,7 +44,6 @@ static inline uint32_t rotl(const uint32_t x, int k)
static int xoshiro128_initialize(const struct device *dev) static int xoshiro128_initialize(const struct device *dev)
{ {
entropy_driver = DEVICE_DT_GET(DT_CHOSEN(zephyr_entropy));
if (!device_is_ready(entropy_driver)) { if (!device_is_ready(entropy_driver)) {
return -ENODEV; return -ENODEV;
} }