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| author | Rafał Miłecki <rafal@milecki.pl> | 2017-03-22 21:09:00 +0100 |
|---|---|---|
| committer | Rafał Miłecki <rafal@milecki.pl> | 2017-03-24 08:06:35 +0100 |
| commit | fce21ae4ccfcee0c28fb18f5507e145fb0b02dec (patch) | |
| tree | 6c29b7c1f65945991d0cae13af012e6c14adc713 /target/linux/brcm2708/patches-4.9/950-0027-bcm2835-rng-Avoid-initialising-if-already-enabled.patch | |
| parent | 46e390322a58bdc632ee43fdf9d14115dac26e7a (diff) | |
| download | upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.tar.gz upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.tar.bz2 upstream-fce21ae4ccfcee0c28fb18f5507e145fb0b02dec.zip | |
brcm2708: rename all patches from raspberrypi git tree to use 950 prefix
Right now all brcm2708 patches are extracted from the non-mainline
raspberrypi/linux git tree. Many of them are hacks and/or are unneeded
in LEDE. Raspberry Pi is getting better and better mainline support so
it would be nice to finally start maintaining patches in a cleaner way:
1) Backport patches accepted in upstream tree
2) Start using upstream drivers
3) Pick only these patches that are needed for more complete support
Handling above tasks requires grouping patches - ideally using the same
prefixes as generic ones. It means we should rename existing patches to
use some high prefix. This will allow e.g. use 0xx for backported code.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>
Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0027-bcm2835-rng-Avoid-initialising-if-already-enabled.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.9/950-0027-bcm2835-rng-Avoid-initialising-if-already-enabled.patch | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0027-bcm2835-rng-Avoid-initialising-if-already-enabled.patch b/target/linux/brcm2708/patches-4.9/950-0027-bcm2835-rng-Avoid-initialising-if-already-enabled.patch new file mode 100644 index 0000000000..97309da0e1 --- /dev/null +++ b/target/linux/brcm2708/patches-4.9/950-0027-bcm2835-rng-Avoid-initialising-if-already-enabled.patch @@ -0,0 +1,26 @@ +From ecba31015228961644ad8e17bcf132eea9c7a7f3 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(-) + +--- a/drivers/char/hw_random/bcm2835-rng.c ++++ b/drivers/char/hw_random/bcm2835-rng.c +@@ -102,9 +102,10 @@ static int bcm2835_rng_probe(struct plat + rng_setup(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) { |