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e5f9f41d5e
linux/drivers/char
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Álvaro Fernández Rojas e5f9f41d5e hwrng: bcm2835 - add reset support 
BCM6368 devices need to reset the IPSEC controller in order to generate true
random numbers.

This is what BCM6368 produces without a reset:
root@OpenWrt:/# cat /dev/hwrng | rngtest -c 1000
rngtest 6.10
Copyright (c) 2004 by Henrique de Moraes Holschuh
This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

rngtest: starting FIPS tests...
rngtest: bits received from input: 20000032
rngtest: FIPS 140-2 successes: 0
rngtest: FIPS 140-2 failures: 1000
rngtest: FIPS 140-2(2001-10-10) Monobit: 2
rngtest: FIPS 140-2(2001-10-10) Poker: 1000
rngtest: FIPS 140-2(2001-10-10) Runs: 1000
rngtest: FIPS 140-2(2001-10-10) Long run: 30
rngtest: FIPS 140-2(2001-10-10) Continuous run: 0
rngtest: input channel speed: (min=37.253; avg=320.827; max=635.783)Mibits/s
rngtest: FIPS tests speed: (min=12.141; avg=15.034; max=16.428)Mibits/s
rngtest: Program run time: 1336176 microseconds

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2021-03-13 00:04:06 +11:00
..
agp char/agp: Disable frontend without CONFIG_DRM_LEGACY 2020-11-18 22:47:45 +01:00
hw_random hwrng: bcm2835 - add reset support 2021-03-13 00:04:06 +11:00
ipmi ipmi: remove open coded version of SMBus block write 2021-01-28 07:15:12 -06:00
mwave char: mwave: remove unneeded break 2020-11-09 16:05:09 +01:00
pcmcia tty_port: drop last traces of low_latency 2021-01-07 16:17:32 +01:00
tpm tpm: Remove unintentional dump_stack() call 2021-03-03 17:43:52 +02:00
xilinx_hwicap treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
xillybus char: xillybus: use devm_platform_ioremap_resource() to simplify code 2019-11-05 18:29:21 +01:00
adi.c
apm-emulation.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
applicom.c misc: cleanup minor number definitions in c file into miscdevice.h 2020-03-18 12:27:03 +01:00
applicom.h
bsr.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
ds1620.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
dsp56k.c
dtlk.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
hangcheck-timer.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 405 2019-06-05 17:37:13 +02:00
hpet.c char: hpet: Fix out-of-bounds read bug 2020-01-30 06:58:33 +01:00
Kconfig char: virtio: Select VIRTIO from VIRTIO_CONSOLE. 2020-09-07 14:32:40 +02:00
lp.c char: lp: remove unneeded break 2020-11-09 16:05:09 +01:00
Makefile rtc/alpha: remove legacy rtc driver 2020-03-19 07:41:02 +01:00
mem.c Fixes around VM_FPNMAP and follow_pfn 2021-02-22 17:45:02 -08:00
misc.c char: misc: increase DYNAMIC_MINORS value 2020-11-03 09:52:04 +01:00
mspec.c char: mspec: Use kvzalloc() in mspec_mmap() 2020-08-28 12:10:04 +02:00
nsc_gpio.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
nvram.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nwbutton.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
nwbutton.h misc: cleanup minor number definitions in c file into miscdevice.h 2020-03-18 12:27:03 +01:00
nwflash.c misc: move FLASH_MINOR into miscdevice.h and fix conflicts 2020-03-18 12:27:04 +01:00
pc8736x_gpio.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
powernv-op-panel.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ppdev.c ppdev: Distribute switch variables for initialization 2020-02-23 20:28:12 +01:00
ps3flash.c powerpc/ps3: make system bus's remove and shutdown callbacks return void 2020-12-04 01:01:22 +11:00
random.c Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
raw.c raw: don't keep unopened block device around 2020-09-23 10:43:19 -06:00
scx200_gpio.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
sonypi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
tb0219.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
tlclk.c drivers: char: tlclk.c: Avoid data race between init and interrupt handler 2020-04-23 16:55:24 +02:00
toshiba.c misc: cleanup minor number definitions in c file into miscdevice.h 2020-03-18 12:27:03 +01:00
ttyprintk.c ttyprintk: remove redundant initialization of variable ret 2020-07-10 14:50:51 +02:00
uv_mmtimer.c
virtio_console.c virtio: virtio_console: fix DMA memory allocation for rproc serial 2020-11-09 18:03:33 +01:00