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Commit 9bae5494 authored by lionel.debieve@st.com's avatar lionel.debieve@st.com Committed by Herbert Xu
Browse files

hwrng: stm32 - fix pm_suspend issue 



When suspend is called after pm_runtime_suspend,
same callback is used and access to rng register is
freezing system. By calling the pm_runtime_force_suspend,
it first checks that runtime has been already done.

Signed-off-by: default avatarLionel Debieve <lionel.debieve@st.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent af513781

drivers/char/hw_random/stm32-rng.c

+7 −2
Original line number Diff line number Diff line
@@ -187,8 +187,13 @@ static int stm32_rng_runtime_resume(struct device *dev) 
}

#endif



static UNIVERSAL_DEV_PM_OPS(stm32_rng_pm_ops, stm32_rng_runtime_suspend,

			    stm32_rng_runtime_resume, NULL);

static const struct dev_pm_ops stm32_rng_pm_ops = {

	SET_RUNTIME_PM_OPS(stm32_rng_runtime_suspend,

			   stm32_rng_runtime_resume, NULL)

	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,

				pm_runtime_force_resume)

};





static const struct of_device_id stm32_rng_match[] = {

	{