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| author | lionel.debieve@st.com <lionel.debieve@st.com> | 2018-04-23 17:04:26 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-05-05 14:52:49 +0800 |
| commit | 9bae54942b13ea9862e9137b403308a3fd4cec3b (patch) | |
| tree | 93c822cffd4b885c7d77c3827a1afa4b1d43d118 /drivers/char/hw_random/stm32-rng.c | |
| parent | af513781f21ca9acbc22d20418a9dff0180e327c (diff) | |
| download | talos-op-linux-9bae54942b13ea9862e9137b403308a3fd4cec3b.tar.gz talos-op-linux-9bae54942b13ea9862e9137b403308a3fd4cec3b.zip | |
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: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char/hw_random/stm32-rng.c')
| -rw-r--r-- | drivers/char/hw_random/stm32-rng.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c index 0d2328da3b76..042860d97b15 100644 --- a/drivers/char/hw_random/stm32-rng.c +++ b/drivers/char/hw_random/stm32-rng.c @@ -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[] = { { |
