drivers: entropy_nrf5: Eliminate direct use of WFE instructions (68bd0369) · Commits · Wenxi XU / zephyr

drivers/entropy/entropy_nrf5.c

+1 −12

Original line number	Diff line number	Diff line
		@@ -291,18 +291,7 @@ static int entropy_nrf5_get_entropy_isr(const struct device *dev,

		while (!nrf_rng_event_check(NRF_RNG,
		NRF_RNG_EVENT_VALRDY)) {
		/*
		* To guarantee waking up from the event, the
		* SEV-On-Pend feature must be enabled (enabled
		* during ARCH initialization).
		*
		* DSB is recommended by spec before WFE (to
		* guarantee completion of memory transactions)
		*/
		__DSB();
		__WFE();
		__SEV();
		__WFE();
		k_cpu_atomic_idle(irq_lock());
		}

		byte = random_byte_get();