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Add 5.14 patches for RPI

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Ycarus (Yannick Chabanois) 2021-10-01 16:58:58 +02:00
parent 030f2f4fd1
commit 5c593832cc
550 changed files with 224556 additions and 0 deletions
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30
root/target/linux/bcm27xx/patches-5.14/0023-bcm2835-rng-Avoid-initialising-if-already-enabled.patch Normal file
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@ -0,0 +1,30 @@
From eea25ccc6fa890f25bcb68993c3491ca0a1bc49b Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 6 Dec 2016 17:05:39 +0000
Subject: [PATCH 023/552] bcm2835-rng: Avoid initialising if already enabled
Avoids the 0x40000 cycles of warmup again if firmware has already used it
---
drivers/char/hw_random/bcm2835-rng.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c
index e7dd457e9b22..f9a4a89e762b 100644
--- a/drivers/char/hw_random/bcm2835-rng.c
+++ b/drivers/char/hw_random/bcm2835-rng.c
@@ -106,8 +106,10 @@ static int bcm2835_rng_init(struct hwrng *rng)
}
/* set warm-up count & enable */
- rng_writel(priv, RNG_WARMUP_COUNT, RNG_STATUS);
- rng_writel(priv, RNG_RBGEN, RNG_CTRL);
+ if (!(rng_readl(priv, RNG_CTRL) & RNG_RBGEN)) {
+ rng_writel(priv, RNG_WARMUP_COUNT, RNG_STATUS);
+ rng_writel(priv, RNG_RBGEN, RNG_CTRL);
+ }
return ret;
}
--
2.33.0