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linux/drivers/char/hw_random
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Gary R Hook 0e4b52942b hwrng: core - Clean up RNG list when last hwrng is unregistered 
Commit 142a27f0a731 added support for a "best" RNG, and in doing so
introduced a hang from rmmod/modprobe -r when the last RNG on the list
was unloaded.

When the hwrng list is depleted, return the global variables to their
original state and decrement all references to the object.

Fixes: 142a27f0a731 ("hwrng: core - Reset user selected rng by writing "" to rng_current")
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Reviewed-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2017-12-22 20:03:36 +11:00
..
amd-rng.c
hwrng: amd - Revert managed API changes
2017-03-16 17:43:10 +08:00
atmel-rng.c
hwrng: atmel - use clk_disable_unprepare instead of clk_disable
2016-11-17 23:34:57 +08:00
bcm2835-rng.c
hwrng: bcm2835 - Enable BCM2835 RNG to work on BCM63xx platforms
2017-11-29 16:43:48 +11:00
cavium-rng-vf.c
hwrng: cavium - Use per device name to allow for multiple devices.
2017-02-11 17:52:30 +08:00
cavium-rng.c
hwrng: cavium - Add Cavium HWRNG driver for ThunderX SoC.
2016-08-31 23:00:40 +08:00
core.c
hwrng: core - Clean up RNG list when last hwrng is unregistered
2017-12-22 20:03:36 +11:00
geode-rng.c
hwrng: geode - Revert managed API changes
2017-03-16 17:43:11 +08:00
hisi-rng.c
hwrng: hisi - Add support for Hisilicon SoC RNG
2016-04-15 22:36:36 +08:00
imx-rngc.c
hwrng: mx-rngc - add a driver for Freescale RNGC
2017-08-03 14:00:21 +08:00
intel-rng.c
hwrng: printk replacement
2014-10-02 14:35:00 +08:00
iproc-rng200.c
hwrng: iproc-rng200 - Add support for BCM7278
2017-11-10 19:20:12 +08:00
ixp4xx-rng.c
IXP4xx: HW pseudo-random generator is available on IXP45x/46x only.
2012-11-22 03:35:39 +00:00
Kconfig
hwrng: bcm63xx - Remove since bcm2835-rng takes over
2017-11-29 16:43:48 +11:00
Makefile
hwrng: bcm63xx - Remove since bcm2835-rng takes over
2017-11-29 16:43:48 +11:00
meson-rng.c
hwrng: meson - add clock handling to driver
2017-03-16 17:58:49 +08:00
msm-rng.c
hwrng: Make explicit that max >= 32 always
2016-11-21 22:50:45 +08:00
mtk-rng.c
hwrng: mtk - add runtime PM support
2017-06-20 11:21:28 +08:00
mxc-rnga.c
hwrng: mxc-rnga - Use the preferred format for kzalloc
2015-09-21 22:00:39 +08:00
n2-asm.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
n2-drv.c
hwrng: n2 - Use devm_kcalloc() in n2rng_probe()
2017-04-21 20:30:47 +08:00
n2rng.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nomadik-rng.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2014-04-03 09:28:16 -07:00
octeon-rng.c
hwrng: octeon - Use devm_hwrng_register
2015-09-21 22:00:38 +08:00
omap3-rom-rng.c
hwrng: omap3-rom - Handle return value of clk_prepare_enable
2017-05-23 12:52:03 +08:00
omap-rng.c
hwrng: omap - move clock related code to omap_rng_probe()
2017-03-16 17:58:50 +08:00
pasemi-rng.c
hwrng: pasemi - Use linux/io.h instead of asm/io.h
2016-09-13 20:27:21 +08:00
pic32-rng.c
hwrng: Make explicit that max >= 32 always
2016-11-21 22:50:45 +08:00
powernv-rng.c
char: constify of_device_id array
2015-03-16 21:10:28 +01:00
pseries-rng.c
hwrng: pseries - constify vio_device_id
2017-09-22 17:43:05 +08:00
s390-trng.c
s390/trng: Introduce s390 TRNG device driver.
2017-04-26 13:41:36 +02:00
st-rng.c
hwrng: st - Fix missing clk_disable_unprepare() on error in st_rng_probe()
2016-09-13 20:27:24 +08:00
stm32-rng.c
hwrng: stm32 - fix maybe uninitialized variable warning
2016-05-31 16:41:57 +08:00
timeriomem-rng.c
hwrng: timeriomem - Remove 'max < 4' condition check
2017-09-22 17:43:14 +08:00
tpm-rng.c
hw_random: add support for the TPM chip as a hardware RNG source
2012-08-22 11:11:41 -05:00
tx4939-rng.c
hwrng: tx4939 - Use devm_hwrng_register instead of hwrng_register
2016-08-31 23:00:49 +08:00
via-rng.c
x86/fpu: Remove irq_ts_save() and irq_ts_restore()
2016-11-01 07:47:54 +01:00
virtio-rng.c
hwrng: virtio - Virtio RNG devices need to be re-registered after suspend/resume
2017-11-06 14:45:06 +08:00
xgene-rng.c
hwrng: xgene - Convert timers to use timer_setup()
2017-11-03 22:11:16 +08:00