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Jason A. Donenfeld 829d680e82 random: cap jitter samples per bit to factor of HZ 
Currently the jitter mechanism will require two timer ticks per
iteration, and it requires N iterations per bit. This N is determined
with a small measurement, and if it's too big, it won't waste time with
jitter entropy because it'd take too long or not have sufficient entropy
anyway.

With the current max N of 32, there are large timeouts on systems with a
small CONFIG_HZ. Rather than set that maximum to 32, instead choose a
factor of CONFIG_HZ. In this case, 1/30 seems to yield sane values for
different configurations of CONFIG_HZ.

Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Fixes: 78c768e619fb ("random: vary jitter iterations based on cycle counter speed")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-07-16 10:42:12 -07:00
..
accessibility
Revert "speakup: Generate speakupmap.h automatically"
2022-05-20 21:07:05 +02:00
acpi
platform-drivers-x86 for v5.19-4
2022-07-15 10:12:22 -07:00
amba
ARM: 9207/1: amba: fix refcount underflow if amba_device_add() fails
2022-07-14 13:17:48 +01:00
android
fix for breakage in #work.fd this window
2022-06-05 17:14:03 -07:00
ata
ata: pata_cs5535: Fix W=1 warnings
2022-06-30 08:21:43 +09:00
atm
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auxdisplay
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base
Just when you thought that all the speculation bugs were addressed and
2022-07-11 18:15:25 -07:00
bcma
bcma: gpio: Switch to use fwnode instead of of_node
2022-05-09 14:41:43 +03:00
block
xen/blkfront: force data bouncing when backend is untrusted
2022-07-01 10:00:50 +02:00
bluetooth
Bluetooth: btmtksdio: fix the reset takes too long
2022-05-13 13:19:01 +02:00
bus
ARM: SoC fixes for 5.19
2022-06-26 14:12:56 -07:00
cdrom
cdrom: remove obsolete TODO list
2022-05-15 18:31:28 -06:00
char
random: cap jitter samples per bit to factor of HZ
2022-07-16 10:42:12 -07:00
clk
clk: stm32: rcc_reset: Fix missing spin_lock_init()
2022-06-09 15:34:08 -07:00
clocksource
clocksource: hyper-v: unexport __init-annotated hv_init_clocksource()
2022-06-08 12:27:08 +00:00
comedi
comedi: vmk80xx: fix expression for tx buffer size
2022-06-10 15:21:23 +02:00
connector
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counter
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cpufreq
cpufreq arm fixes for 5.19-rc5
2022-06-28 17:56:57 +02:00
cpuidle
Merge branches 'pm-em' and 'pm-cpuidle'
2022-05-23 19:18:51 +02:00
crypto
crypto: s390 - do not depend on CRYPTO_HW for SIMD implementations
2022-07-06 20:04:06 -07:00
cxl
cxl/mbox: Fix missing variable payload checks in cmd size validation
2022-06-28 22:03:18 -07:00
dax
dax: add .recovery_write dax_operation
2022-05-16 13:37:59 -07:00
dca
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devfreq
PM / devfreq: exynos-bus: Fix NULL pointer dereference
2022-07-08 04:32:26 +09:00
dio
drivers: dio: add missing iounmap() in dio_init()
2022-05-19 18:56:51 +02:00
dma
dmaengine: lgm: Fix an error handling path in intel_ldma_probe()
2022-07-06 10:53:25 +05:30
dma-buf
Three mode setting fixes for fsl-ldb, a fbdev removal use-after-free fix,
2022-07-12 10:44:40 +10:00
edac
- A gargen variety of fixes which don't fit any other tip bucket:
2022-05-23 19:32:59 -07:00
eisa
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extcon
extcon: Modify extcon device to be created after driver data is set
2022-05-13 17:03:41 +09:00
firewire
firewire: convert sysfs sprintf/snprintf family to sysfs_emit
2022-06-17 10:43:20 +02:00
firmware
platform-drivers-x86 for v5.19-4
2022-07-15 10:12:22 -07:00
fpga
fpga: dfl: Allow Port to be linked to FME's DFL
2022-05-10 16:05:38 +08:00
fsi
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gnss
…
gpio
gpiolib: cdev: fix null pointer dereference in linereq_free()
2022-07-07 12:18:18 +02:00
gpu
drm fixes for 5.19-rc7
2022-07-15 09:56:24 -07:00
greybus
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hid
HID: hyperv: Correctly access fields declared as __le16
2022-06-08 12:28:13 +00:00
hsi
…
hte
hte: Uninitialized variable in hte_ts_get()
2022-05-20 15:54:41 +02:00
hv
Drivers: hv: vmbus: Release cpu lock in error case
2022-06-10 08:41:28 +00:00
hwmon
hwmon: (ibmaem) don't call platform_device_del() if platform_device_add() fails
2022-07-01 11:53:29 -07:00
hwspinlock
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hwtracing
coresight: cpu-debug: Replace mutex with mutex_trylock on panic notifier
2022-05-09 16:03:24 +01:00
i2c
i2c: cadence: Unregister the clk notifier in error path
2022-07-07 23:06:34 +02:00
i3c
i3c: master: svc: fix returnvar.cocci warning
2022-05-17 22:34:42 +02:00
idle
intel_idle: Disable IBRS during long idle
2022-06-27 10:33:59 +02:00
iio
1st set of IIO fixes for the 5.19 cycle.
2022-06-20 09:49:52 +02:00
infiniband
RDMA/cm: Fix memory leak in ib_cm_insert_listen
2022-06-24 16:41:03 -03:00
input
Input updates for v5.19-rc1
2022-06-07 15:00:29 -07:00
interconnect
Char / Misc / Other smaller driver subsystem updates for 5.19-rc1
2022-06-03 11:36:34 -07:00
iommu
iommu/vt-d: Fix RID2PASID setup/teardown failure
2022-07-06 12:59:21 +02:00
ipack
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irqchip
IRQ urgent fixes by way of Marc Zygnier:
2022-07-10 08:52:12 -07:00
isdn
…
leds
ARM: multiplatform changes, part 2
2022-06-02 15:23:54 -07:00
macintosh
macintosh: via-pmu and via-cuda need RTC_LIB
2022-05-22 15:58:30 +10:00
mailbox
mailbox: qcom-ipcc: Fix -Wunused-function with CONFIG_PM_SLEEP=n
2022-05-24 08:08:24 -05:00
mcb
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md
dm raid: fix KASAN warning in raid5_add_disks
2022-06-29 19:48:04 -04:00
media
USB / Thunderbolt changes for 5.19-rc1
2022-06-03 11:17:49 -07:00
memory
memory: samsung: exynos5422-dmc: Fix refcount leak in of_get_dram_timings
2022-06-06 11:18:20 +02:00
memstick
…
message
…
mfd
ARM: multiplatform changes, part 2
2022-06-02 15:23:54 -07:00
misc
misc: rtsx_usb: set return value in rsp_buf alloc err path
2022-07-02 16:20:56 +02:00
mmc
mmc: mediatek: wait dma stop bit reset to 0
2022-06-15 10:05:56 -07:00
most
…
mtd
mtd: rawnand: gpmi: Fix setting busy timeout setting
2022-06-16 16:46:08 +02:00
mux
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net
nfp: flower: configure tunnel neighbour on cmsg rx
2022-07-14 10:12:56 -07:00
nfc
NFC: nxp-nci: don't print header length mismatch on i2c error
2022-06-29 14:05:00 +01:00
ntb
…
nubus
…
nvdimm
nvdimm: Fix badblocks clear off-by-one error
2022-06-24 11:57:19 -07:00
nvme
nvme: use struct group for generic command dwords
2022-07-06 19:12:56 +02:00
nvmem
nvmem: sfp: Add support for TA 2.1 devices
2022-05-09 15:46:29 +02:00
of
drm for 5.19-rc1
2022-05-25 16:18:27 -07:00
opp
OPP updates for 5.19-rc1
2022-05-25 15:02:26 +02:00
parisc
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parport
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pci
Driver core changes for 5.19-rc1
2022-06-03 11:48:47 -07:00
pcmcia
ARM: multiplatform changes, part 2
2022-06-02 15:23:54 -07:00
peci
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perf
arm64 updates for 5.19:
2022-05-23 21:06:11 -07:00
phy
phy-for-5.19
2022-05-19 16:56:17 +02:00
pinctrl
pinctrl: stm32: fix optional IRQ support to gpios
2022-06-28 16:12:40 +02:00
platform
platform-drivers-x86 for v5.19-4
2022-07-15 10:12:22 -07:00
pnp
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power
Char / Misc / Other smaller driver subsystem updates for 5.19-rc1
2022-06-03 11:36:34 -07:00
powercap
Merge branches 'pm-em' and 'pm-cpuidle'
2022-05-23 19:18:51 +02:00
pps
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ps3
…
ptp
ptp: ptp_clockmatrix: fix is_single_shot
2022-05-25 21:51:32 -07:00
pwm
pwm: pwm-cros-ec: Add channel type support
2022-05-20 16:40:01 +02:00
rapidio
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ras
…
regulator
regulator: qcom_smd: correct MP5496 ranges
2022-06-07 20:38:09 +01:00
remoteproc
remoteproc: imx_rproc: Support i.MX93
2022-05-09 09:29:25 -06:00
reset
TI Driver updates for v5.19
2022-05-09 23:09:10 +02:00
rpmsg
Driver core changes for 5.19-rc1
2022-06-03 11:48:47 -07:00
rtc
ARM: multiplatform changes, part 2
2022-06-02 15:23:54 -07:00
s390
s390 updates for 5.19-rc5
2022-07-01 11:19:14 -07:00
sbus
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scsi
scsi: hisi_sas: Limit max hw sectors for v3 HW
2022-06-27 22:43:57 -04:00
sh
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siox
…
slimbus
Driver core changes for 5.19-rc1
2022-06-03 11:48:47 -07:00
soc
soc: qcom: smem: use correct format characters
2022-07-04 14:26:51 +02:00
soundwire
soundwire: qcom: adjust autoenumeration timeout
2022-05-09 12:03:14 +05:30
spi
spi: cadence-quadspi: Remove spi_master_put() in probe failure path
2022-07-14 13:26:35 +01:00
spmi
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ssb
ssb: remove unreachable code
2022-05-11 08:29:11 +03:00
staging
staging/wlan-ng: get the correct struct hfa384x in work callback
2022-07-01 09:58:58 +02:00
target
blk-mq: remove the done argument to blk_execute_rq_nowait
2022-05-28 06:15:27 -06:00
tc
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tee
tee: tee_get_drvdata(): fix description of return value
2022-07-08 10:51:24 +02:00
thermal
Thermal control update for 5.19-rc5
2022-07-01 13:00:47 -07:00
thunderbolt
USB / Thunderbolt changes for 5.19-rc1
2022-06-03 11:17:49 -07:00
tty
Merge branch 'rework/kthreads' into for-linus
2022-06-23 19:11:28 +02:00
ufs
scsi: ufs: Fix a race between the interrupt handler and the reset handler
2022-06-16 21:32:09 -04:00
uio
uio: dfl: add HSSI subsystem feature id
2022-05-09 15:42:57 +02:00
usb
usb: chipidea: udc: check request status before setting device address
2022-06-24 13:45:23 +02:00
vdpa
vduse: Tie vduse mgmtdev and its device
2022-06-24 02:49:48 -04:00
vfio
vfio: Move IOMMU_CAP_CACHE_COHERENCY test to after we know we have a group
2022-07-05 16:06:50 -06:00
vhost
vhost-vdpa: call vhost_vdpa_cleanup during the release
2022-06-27 08:05:35 -04:00
video
fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()
2022-07-07 10:52:35 +02:00
virt
Char / Misc / Other smaller driver subsystem updates for 5.19-rc1
2022-06-03 11:36:34 -07:00
virtio
virtio_ring: make vring_create_virtqueue_split prettier
2022-06-27 08:05:35 -04:00
vlynq
…
vme
…
w1
…
watchdog
watchdog: gxp: Add missing MODULE_LICENSE
2022-06-09 12:20:34 +02:00
xen
xen/gntdev: Ignore failure to unmap INVALID_GRANT_HANDLE
2022-07-11 11:39:45 +02:00
zorro
…
Kconfig
SCSI misc on 20220604
2022-06-05 09:25:12 -07:00
Makefile
SCSI misc on 20220604
2022-06-05 09:25:12 -07:00