[Linux-stm32] [PATCH 2/2] hwrng: stm32 - set default random quality

Lionel Debieve lionel.debieve at st.com
Mon Apr 1 10:30:46 UTC 2019


Add a default quality to hw_random device to be
automatically set as new default entropy. Setting
random quality will decrease the crng init time by
switching to this hardware random source.

Signed-off-by: Lionel Debieve <lionel.debieve at st.com>
---
 drivers/char/hw_random/stm32-rng.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/char/hw_random/stm32-rng.c b/drivers/char/hw_random/stm32-rng.c
index 37b338a..0ef5b6a 100644
--- a/drivers/char/hw_random/stm32-rng.c
+++ b/drivers/char/hw_random/stm32-rng.c
@@ -161,6 +161,7 @@ static int stm32_rng_probe(struct platform_device *ofdev)
 #endif
 	priv->rng.read = stm32_rng_read,
 	priv->rng.priv = (unsigned long) dev;
+	priv->rng.quality = 900;
 
 	pm_runtime_set_autosuspend_delay(dev, 100);
 	pm_runtime_use_autosuspend(dev);
-- 
2.7.4




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