diff options
Diffstat (limited to 'drivers/char/hw_random')
| -rw-r--r-- | drivers/char/hw_random/stm32-rng.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c index b6182f86d8a4..0e903d6e22e3 100644 --- a/drivers/char/hw_random/stm32-rng.c +++ b/drivers/char/hw_random/stm32-rng.c @@ -363,6 +363,8 @@ static int stm32_rng_init(struct hwrng *rng) return -EINVAL; } + clk_disable_unprepare(priv->clk); + return 0; } @@ -387,6 +389,11 @@ static int __maybe_unused stm32_rng_runtime_suspend(struct device *dev) static int __maybe_unused stm32_rng_suspend(struct device *dev) { struct stm32_rng_private *priv = dev_get_drvdata(dev); + int err; + + err = clk_prepare_enable(priv->clk); + if (err) + return err; if (priv->data->has_cond_reset) { priv->pm_conf.nscr = readl_relaxed(priv->base + RNG_NSCR); @@ -468,6 +475,8 @@ static int __maybe_unused stm32_rng_resume(struct device *dev) writel_relaxed(reg, priv->base + RNG_CR); } + clk_disable_unprepare(priv->clk); + return 0; } |