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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2017-03-08 09:46:30 +0100 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2017-03-08 09:54:01 +0100 |
commit | 8b52a8906bf376610e5a8d051ead1d50610e6da1 (patch) | |
tree | f8e0b6467501c56f03fc6782433a765417b21ce5 /target/linux/brcm2708/patches-4.4/0561-bcm2835-rng-Avoid-initialising-if-already-enabled.patch | |
parent | b3ba3764d0e81097229ffeb0eff9d72ee42a801d (diff) | |
download | mtk-20170518-8b52a8906bf376610e5a8d051ead1d50610e6da1.zip mtk-20170518-8b52a8906bf376610e5a8d051ead1d50610e6da1.tar.gz mtk-20170518-8b52a8906bf376610e5a8d051ead1d50610e6da1.tar.bz2 |
brcm2708: update linux 4.4 patches to latest version
As usual these patches were extracted and rebased from the raspberry pi repo:
https://github.com/raspberrypi/linux/tree/rpi-4.4.y
- led1 can't be controlled on rpi-3 for linux 4.4, remove it.
- Fix modules.mk typos.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0561-bcm2835-rng-Avoid-initialising-if-already-enabled.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.4/0561-bcm2835-rng-Avoid-initialising-if-already-enabled.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0561-bcm2835-rng-Avoid-initialising-if-already-enabled.patch b/target/linux/brcm2708/patches-4.4/0561-bcm2835-rng-Avoid-initialising-if-already-enabled.patch new file mode 100644 index 0000000..2892aea --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0561-bcm2835-rng-Avoid-initialising-if-already-enabled.patch @@ -0,0 +1,31 @@ +From b7791eea502e0d98ae204750aff2abafc431fb11 Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Tue, 6 Dec 2016 17:05:39 +0000 +Subject: [PATCH] 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 | 7 ++++--- + 1 file changed, 4 insertions(+), 3 deletions(-) + +diff --git a/drivers/char/hw_random/bcm2835-rng.c b/drivers/char/hw_random/bcm2835-rng.c +index 7192ec2..2ff49c1 100644 +--- a/drivers/char/hw_random/bcm2835-rng.c ++++ b/drivers/char/hw_random/bcm2835-rng.c +@@ -62,9 +62,10 @@ static int bcm2835_rng_probe(struct platform_device *pdev) + bcm2835_rng_ops.priv = (unsigned long)rng_base; + + /* set warm-up count & enable */ +- __raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS); +- __raw_writel(RNG_RBGEN, rng_base + RNG_CTRL); +- ++ if (!(__raw_readl(rng_base + RNG_CTRL) & RNG_RBGEN)) { ++ __raw_writel(RNG_WARMUP_COUNT, rng_base + RNG_STATUS); ++ __raw_writel(RNG_RBGEN, rng_base + RNG_CTRL); ++ } + /* register driver */ + err = hwrng_register(&bcm2835_rng_ops); + if (err) { +-- +2.1.4 + |