[nrf noup] zephyr: Fix the CSRNG define

CSRNG availability relies on having an entropy driver, so, protect the API and fallback to non-CSRNG in case of unavailability of such driver. Signed-off-by: Chaitanya Tata <[email protected]>
nrfconnect · Jul 9, 2024 · 3b64b3b · 3b64b3b
1 parent 6311fde
commit 3b64b3b
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/utils/os_zephyr.c b/src/utils/os_zephyr.c
@@ -144,9 +144,13 @@ void os_daemonize_terminate(const char *pid_file)
 
 int os_get_random(unsigned char *buf, size_t len)
 {
+#if defined(CONFIG_ENTROPY_HAS_DRIVER)
+	return sys_csrand_get(buf, len);
+#else
 	sys_rand_get(buf, len);
 
 	return 0;
+#endif
 }
 
 unsigned long os_random(void)