Andre Wolokita 1a5addfe82 hwrng: omap - Change RNG_CONFIG_REG to RNG_CONTROL_REG when checking and disabling TRNG ... In omap4_rng_init(), a check of bit 10 of the RNG_CONFIG_REG is done to determine whether the RNG is running. This is suspicious firstly due to the use of RNG_CONTROL_ENABLE_TRNG_MASK and secondly because the same mask is written to RNG_CONTROL_REG after configuration of the FROs. Similar suspicious logic is repeated in omap4_rng_cleanup() when RNG_CONTROL_REG masked with RNG_CONTROL_ENABLE_TRNG_MASK is read, the same mask bit is cleared, and then written to RNG_CONFIG_REG. Unless the TRNG is enabled with one bit in RNG_CONTROL and disabled with another in RNG_CONFIG and these bits are mirrored in some way, I believe that the TRNG is not really shutting off. Apart from the strange logic, I have reason to suspect that the OMAP4 related code in this driver is driving an Inside Secure IP hardware RNG and strongly suspect that bit 10 of RNG_CONFIG_REG is one of the bits configuring the sampling rate of the FROs. This option is by default set to 0 and is not being set anywhere in omap-rng.c. Reading this bit during omap4_rng_init() will always return 0. It will remain 0 because ~(value of TRNG_MASK in control) will always be 0, because the TRNG is never shut off. This is of course presuming that the OMAP4 features the Inside Secure IP. I'm interested in knowing what the guys at TI think about this, as only they can confirm or deny the detailed structure of these registers. Signed-off-by: Andre Wolokita <Andre.Wolokita@analog.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>		2015-03-17 22:32:04 +11:00
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accessibility	…
acpi	Additional power management and ACPI updates for v3.20-rc1	2015-02-21 13:40:41 -08:00
amba	ARM: 8256/1: driver coamba: add device binding path 'driver_override'	2015-02-10 10:23:15 +00:00
android	…
ata	Merge branch 'for-3.20/drivers' of git://git.kernel.dk/linux-block	2015-02-12 14:30:53 -08:00
atm	…
auxdisplay	…
base	driver core patches for 3.20-rc1	2015-02-15 11:11:47 -08:00
bcma	…
block	Merge branch 'for-3.20' of git://git.infradead.org/users/kbusch/linux-nvme into for-linus	2015-02-20 22:12:02 -08:00
bluetooth	TTY/Serial driver patches for 3.20-rc1	2015-02-15 11:37:02 -08:00
bus	ARM: SoC platform changes	2015-02-17 09:27:54 -08:00
cdrom	…
char	hwrng: omap - Change RNG_CONFIG_REG to RNG_CONTROL_REG when checking and disabling TRNG	2015-03-17 22:32:04 +11:00
clk	The clock framework changes for 3.20 contain the usual driver additions,	2015-02-21 12:30:30 -08:00
clocksource	ARM: SoC platform changes	2015-02-17 09:27:54 -08:00
connector	…
coresight	coresight: fix function etm_writel_cp14() parameter order	2015-02-04 10:42:55 -08:00
cpufreq	Additional power management and ACPI updates for v3.20-rc1	2015-02-21 13:40:41 -08:00
cpuidle	Merge branches 'pnp', 'pm-cpuidle' and 'pm-cpufreq'	2015-02-21 04:29:16 +01:00
crypto	crypto: img-hash - Add Imagination Technologies hw hash accelerator	2015-03-16 21:46:24 +11:00
dca	…
devfreq	Merge branches 'pm-cpufreq', 'pm-cpuidle', 'pm-devfreq', 'pm-opp' and 'pm-tools'	2015-02-13 21:39:06 +01:00
dio	…
dma	Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma	2015-02-18 08:49:20 -08:00
dma-buf	…
edac	* A fix to sb_edac for proper detection on SNB machines	2015-02-19 11:18:14 -08:00
eisa	…
extcon	…
firewire	firewire: core: use correct vendor/model IDs	2015-02-02 21:56:03 +01:00
firmware	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 10:41:29 -08:00
fmc	…
gpio	Merge branch 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm	2015-02-12 08:51:56 -08:00
gpu	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2015-02-16 15:48:00 -08:00
hid	Merge branches 'for-3.19/upstream-fixes', 'for-3.20/apple', 'for-3.20/betop', 'for-3.20/lenovo', 'for-3.20/logitech', 'for-3.20/rmi', 'for-3.20/upstream' and 'for-3.20/wacom' into for-linus	2015-02-09 11:17:45 +01:00
hsi	…
hv	Char / Misc patches for 3.20-rc1	2015-02-15 10:48:44 -08:00
hwmon	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
hwspinlock	…
i2c	Merge branch 'i2c/for-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2015-02-21 12:41:50 -08:00
ide	…
idle	intel_idle: Add ->enter_freeze callbacks	2015-02-15 19:40:09 +01:00
iio	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
infiniband	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-02-22 17:42:14 -08:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2015-02-21 12:59:04 -08:00
iommu	IOMMU Updates for Linux v3.20	2015-02-12 09:16:56 -08:00
ipack	…
irqchip	Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus	2015-02-21 19:41:38 -08:00
isdn	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
leds	leds: leds-gpio: Pass on error codes unmodified	2015-02-02 14:36:10 -08:00
lguest	OK, this has the big virtio 1.0 implementation, as specified by OASIS.	2015-02-18 09:24:01 -08:00
macintosh	…
mailbox	Merge branch 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration	2015-02-11 12:56:40 -08:00
mcb	mcb: Fix error path of mcb_pci_probe	2015-02-03 15:48:51 -08:00
md	- Significant dm-crypt CPU scalability performance improvements thanks	2015-02-21 13:28:45 -08:00
media	mm: gup: use get_user_pages_unlocked	2015-02-11 17:06:05 -08:00
memory	memory/fsl-corenet-cf: Add t1040 support	2015-01-29 22:57:43 -06:00
memstick	…
message	i2o: move to staging	2015-02-03 15:58:39 -08:00
mfd	Changes to existing drivers:	2015-02-18 09:05:48 -08:00
misc	Char / Misc patches for 3.20-rc1	2015-02-15 10:48:44 -08:00
mmc	The clock framework changes for 3.20 contain the usual driver additions,	2015-02-21 12:30:30 -08:00
mtd	MTD updates for 3.20-rc1	2015-02-18 08:01:44 -08:00
net	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
nfc	NFC: nci: Move NFCEE discovery logic	2015-02-04 09:15:18 +01:00
ntb	…
nubus	…
of	PCI updates for v3.20:	2015-02-18 09:43:46 -08:00
oprofile	…
parisc	…
parport	…
pci	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
pcmcia	ARM: SoC driver updates	2015-02-17 09:38:59 -08:00
phy	USB patches for 3.20-rc1	2015-02-15 10:24:55 -08:00
pinctrl	This is the bulk of pin control changes for the v3.20 cycle:	2015-02-11 11:23:13 -08:00
platform	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-21 11:12:07 -08:00
pnp	Merge branches 'pnp', 'pm-cpuidle' and 'pm-cpufreq'	2015-02-21 04:29:16 +01:00
power	…
powercap	…
pps	…
ps3	…
ptp	…
pwm	pwm: tegra: Use NSEC_PER_SEC	2015-02-18 08:40:29 +01:00
rapidio	Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma	2015-02-18 08:49:20 -08:00
ras	…
regulator	Changes to existing drivers:	2015-02-18 09:05:48 -08:00
remoteproc	…
reset	…
rpmsg	…
rtc	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
s390	Fairly small update, but there are some interesting new features.	2015-02-13 09:55:09 -08:00
sbus	…
scsi	SCSI misc on 20150221	2015-02-21 19:16:42 -08:00
sfi	…
sh	…
sn	…
soc	ARM: SoC driver updates	2015-02-17 09:38:59 -08:00
spi	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
spmi	…
ssb	treewide: Remove unnecessary SSB_DEVTABLE_END macro	2015-02-11 14:38:29 -08:00
staging	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-02-22 17:42:14 -08:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-02-21 13:21:19 -08:00
tc	…
thermal	thermal: exynos: fix: Check if data->tmu_read callback is present before read	2015-02-20 21:57:02 +08:00
thunderbolt	…
tty	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
uio	…
usb	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
uwb	USB patches for 3.20-rc1	2015-02-15 10:24:55 -08:00
vfio	vfio-pci: Add device request interface	2015-02-10 12:38:14 -07:00
vhost	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2015-02-21 13:21:19 -08:00
video	mm: gup: use get_user_pages_unlocked	2015-02-11 17:06:05 -08:00
virt	…
virtio	virtio: don't set VIRTIO_CONFIG_S_DRIVER_OK twice.	2015-02-17 16:19:29 +10:30
vlynq	…
vme	…
w1	…
watchdog	watchdog: bcm47xx_wdt.c: allow enabling on BCM5301X arch	2015-02-17 21:34:13 +01:00
xen	SCSI misc on 20150209	2015-02-11 10:28:45 -08:00
zorro	…
Kconfig	i2o: move to staging	2015-02-03 15:58:39 -08:00
Makefile	…