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Jason A. Donenfeld 197d25e068 arm: use fallback for random_get_entropy() instead of zero 
commit ff8a8f59c9 upstream.

In the event that random_get_entropy() can't access a cycle counter or
similar, falling back to returning 0 is really not the best we can do.
Instead, at least calling random_get_entropy_fallback() would be
preferable, because that always needs to return _something_, even
falling back to jiffies eventually. It's not as though
random_get_entropy_fallback() is super high precision or guaranteed to
be entropic, but basically anything that's not zero all the time is
better than returning zero all the time.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-30 09:29:14 +02:00
..
hardware
ARM: 9049/1: locomo: make locomo bus's remove callback return void
2021-02-01 19:44:30 +00:00
mach
ARM: rpc: use legacy_timer_tick
2020-10-30 21:57:05 +01:00
vdso
vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
2020-08-06 10:57:30 +02:00
xen
xen/arm: introduce XENFEAT_direct_mapped and XENFEAT_not_direct_mapped
2021-04-23 11:33:50 +02:00
arch_gicv3.h
arm: Remove GICv3 vgic compatibility macros
2020-03-24 10:56:05 +00:00
arch_timer.h
clocksource/drivers/arm_arch_timer: Extract elf_hwcap use to arch-helper
2019-06-25 19:49:18 +02:00
archrandom.h
firmware: smccc: Introduce SMCCC TRNG framework
2021-01-21 17:42:46 +00:00
arm-cci.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
asm-offsets.h
…
assembler.h
ARM: fix co-processor register typo
2022-03-11 12:22:35 +01:00
atomic.h
locking/atomic: arm: move to ARCH_ATOMIC
2021-05-26 13:20:50 +02:00
auxvec.h
…
barrier.h
ARM: avoid Cortex-A9 livelock on tight dmb loops
2019-02-01 22:05:50 +00:00
bitops.h
ARM: 8785/1: use compiler built-ins for ffs and fls
2018-07-30 11:45:53 +01:00
bitrev.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bL_switcher.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
bug.h
arm: print alloc free paths for address in registers
2021-05-07 00:26:34 -07:00
bugs.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cache.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
cacheflush.h
mm: remove flush_kernel_dcache_page
2021-09-03 09:58:13 -07:00
cachetype.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
checksum.h
arm: propagate the calling convention changes down to csum_partial_copy_from_user()
2020-08-20 15:45:16 -04:00
clocksource.h
arm: Introduce asm/vdso/clocksource.h
2020-03-21 15:23:54 +01:00
cmpxchg.h
locking/atomic: arm: move to ARCH_ATOMIC
2021-05-26 13:20:50 +02:00
compiler.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cp15.h
arm: vdso: Enable arm to use common headers
2020-03-21 15:24:03 +01:00
cpu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cpufeature.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
cpuidle.h
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2021-06-28 14:04:24 -07:00
cputype.h
Merge branches 'misc', 'sa1100-for-next' and 'spectre' into for-linus
2019-01-02 10:37:05 +00:00
cti.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dcc.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284
2019-06-05 17:36:37 +02:00
delay.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
device.h
arm: Remove dev->archdata.iommu pointer
2020-06-30 11:59:48 +02:00
div64.h
ARM: 9118/1: div64: Remove always-true __div64_const32_is_OK() duplicate
2021-08-20 11:39:28 +01:00
dma-direct.h
ARM/omap1: switch to use dma_direct_set_offset for lbus DMA offsets
2020-09-25 06:15:32 +02:00
dma-iommu.h
dma-mapping: move dma-debug.h to kernel/dma/
2020-10-06 07:07:05 +02:00
dma-mapping.h
dma-mapping: move dma-debug.h to kernel/dma/
2020-10-06 07:07:05 +02:00
dma.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dmi.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
domain.h
ARM: 8908/1: add __always_inline to functions called from __get_user_check()
2019-10-10 22:23:19 +01:00
ecard.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
edac.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
efi.h
efi: Move efifb_setup_from_dmi() prototype from arch headers
2022-01-05 12:42:34 +01:00
elf.h
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux
2020-12-22 13:34:27 -08:00
entry-macro-multi.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
exception.h
ARM: probes: avoid adding kprobes to sensitive kernel-entry/exit code
2017-12-17 22:14:21 +00:00
fb.h
…
fiq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
firmware.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
fixmap.h
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux
2020-12-22 13:34:27 -08:00
floppy.h
floppy: split the base port from the register in I/O accesses
2020-05-12 19:34:52 +03:00
fncpy.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
fpstate.h
ARM: ep93xx: remove MaverickCrunch support
2021-08-04 13:30:04 +02:00
ftrace.h
ARM: 9079/1: ftrace: Add MODULE_PLTS support
2021-06-07 12:56:20 +01:00
futex.h
ARM: futex: Address build warning
2020-05-07 00:41:47 +02:00
glue-cache.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
glue-df.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
glue-pf.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
glue-proc.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
glue.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
gpio.h
ARM: 9103/1: Drop ARCH_NR_GPIOS definition
2021-08-10 12:16:07 +01:00
hardirq.h
ARM: irqstat: Get rid of duplicated declaration
2020-11-23 10:31:05 +01:00
highmem.h
ARM: highmem: Fix cache_is_vivt() reference
2020-12-04 23:35:34 +01:00
hugetlb-3level.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
hugetlb.h
mm/hugetlb: define a generic fallback for arch_clear_hugepage_flags()
2020-06-03 20:09:46 -07:00
hw_breakpoint.h
ARM: 8927/1: ARM/hw_breakpoint: add more ARMv8 debug architecture versions support
2019-11-15 22:21:08 +00:00
hw_irq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hwcap.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hypervisor.h
arm/arm64: Probe for the presence of KVM hypervisor
2021-03-31 09:16:55 +01:00
ide.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
idmap.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
insn.h
ARM: 9078/1: Add warn suppress parameter to arm_gen_branch_link()
2021-06-07 12:56:20 +01:00
io.h
arm[64]/memremap: don't abuse pfn_valid() to ensure presence of linear map
2022-05-18 10:26:56 +02:00
irq_work.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq.h
ARM: irqstat: Get rid of duplicated declaration
2020-11-23 10:31:05 +01:00
irqflags.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
jump_label.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kasan_def.h
ARM: 9015/2: Define the virtual space of KASan's shadow region
2020-10-27 12:11:08 +00:00
kasan.h
ARM: 9016/2: Initialize the mapping of KASan shadow memory
2020-10-27 12:11:10 +00:00
Kbuild
local64.h: make <asm/local64.h> mandatory
2020-12-29 15:36:49 -08:00
kexec-internal.h
ARM: kexec: fix oops after TLB are invalidated
2021-02-05 10:23:29 +00:00
kexec.h
ARM: 9060/1: kexec: Remove unused kexec_reinit callback
2021-03-09 10:25:35 +00:00
kgdb.h
ARM: 8764/1: kgdb: fix NUMREGBYTES so that gdb_regs[] is the correct size
2018-05-19 11:53:46 +01:00
kprobes.h
ARM: 9019/1: kprobes: Avoid fortify_panic() when copying optprobe template
2020-10-27 12:11:51 +00:00
krait-l2-accessors.h
ARM: Add Krait L2 register accessor functions
2018-10-17 13:14:33 -07:00
linkage.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mc146818rtc.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mcpm.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
mcs_spinlock.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
memblock.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
memory.h
ARM: 9104/2: Fix Keystone 2 kernel mapping regression
2021-08-10 12:17:25 +01:00
mmu_context.h
arm: use asm-generic/mmu_context.h for no-op implementations
2020-10-26 16:45:06 +01:00
mmu.h
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
2017-11-16 12:50:35 -08:00
module.h
ARM: 9079/1: ftrace: Add MODULE_PLTS support
2021-06-07 12:56:20 +01:00
module.lds.h
kbuild: preprocess module linker script
2020-09-25 00:36:41 +09:00
mpu.h
ARM: 8757/1: NOMMU: Support PMSAv8 MPU
2018-05-19 11:53:46 +01:00
mtd-xip.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
neon.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
nwflash.h
misc: move FLASH_MINOR into miscdevice.h and fix conflicts
2020-03-18 12:27:04 +01:00
opcodes-sec.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
opcodes-virt.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
opcodes.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
outercache.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
page-nommu.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
page.h
mm/vma: define a default value for VM_DATA_DEFAULT_FLAGS
2020-04-10 15:36:21 -07:00
paravirt.h
x86/paravirt: Switch time pvops functions to use static_call()
2021-03-11 16:17:52 +01:00
patch.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pci.h
ARM: 8911/1: move pcibios_report_status to <asm/pci.h>
2019-10-27 21:14:40 +00:00
percpu.h
ARM: percpu.h: fix build error
2020-07-30 13:01:04 -07:00
perf_event.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pgalloc.h
mm/thp: define default pmd_pgtable()
2021-07-01 11:06:03 -07:00
pgtable-2level-hwdef.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pgtable-2level-types.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
pgtable-2level.h
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux
2020-12-22 13:34:27 -08:00
pgtable-3level-hwdef.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
pgtable-3level-types.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
pgtable-3level.h
mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *
2021-07-08 11:48:22 -07:00
pgtable-hwdef.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pgtable-nommu.h
mm: consolidate pte_index() and pte_offset_*() definitions
2020-06-09 09:39:14 -07:00
pgtable.h
ARM: update __swp_entry_to_pte() to use PTE_TYPE_FAULT
2021-06-07 12:55:30 +01:00
probes.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
proc-fns.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
processor.h
ARM: 9180/1: Thumb2: align ALT_UP() sections in modules sufficiently
2022-02-01 17:26:59 +01:00
procinfo.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
prom.h
ARM: 9011/1: centralize phys-to-virt conversion of DT/ATAGS address
2020-10-27 12:10:59 +00:00
psci.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
ptdump.h
arm: dump: no need to check return value of debugfs_create functions
2019-06-03 15:49:07 +02:00
ptrace.h
ARM: 9113/1: uaccess: remove set_fs() implementation
2021-08-20 11:39:27 +01:00
seccomp.h
arm: Enable seccomp architecture tracking
2020-11-20 11:16:34 -08:00
sections.h
arm: Remove HYP/Stage-2 page-table support
2020-03-24 10:56:05 +00:00
secure_cntvoff.h
ARM: smp: Add initialization of CNTVOFF
2018-05-08 14:50:42 +02:00
set_memory.h
ARM: 9072/1: mm: remove set_kernel_text_r[ow]()
2021-04-18 19:15:11 +01:00
setup.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
shmparam.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
signal.h
signal: clear non-uapi flag bits when passing/returning sa_flags
2020-11-23 10:31:05 -06:00
smp_plat.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smp_scu.h
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2017-11-16 14:05:12 -08:00
smp_twd.h
ARM: 8822/1: smp_twd: Remove legacy TWD registration
2019-02-01 21:44:10 +00:00
smp.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
sparsemem.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
spectre.h
ARM: Spectre-BHB: provide empty stub for non-config
2022-03-16 14:23:42 +01:00
spinlock_types.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
spinlock.h
locking: Fix typos in comments
2021-03-22 02:45:52 +01:00
stackprotector.h
ARM: smp: add support for per-task stack canaries
2018-12-12 13:20:07 -08:00
stacktrace.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
string.h
ARM: 9014/2: Replace string mem* functions for KASan
2020-10-27 12:11:06 +00:00
suspend.h
ARM: 8847/1: pm: fix HYP/SVC mode mismatch when MCPM is used
2019-02-26 11:32:54 +00:00
swab.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
switch_to.h
sched/rt, ARM: Use CONFIG_PREEMPTION
2019-12-08 14:37:32 +01:00
sync_bitops.h
locking/atomic: arm: move to ARCH_ATOMIC
2021-05-26 13:20:50 +02:00
syscall.h
ARM: 9108/1: oabi-compat: rework epoll_wait/epoll_pwait emulation
2021-08-20 11:39:26 +01:00
system_info.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
system_misc.h
ARM: 9096/1: Remove arm_pm_restart()
2021-06-13 18:16:48 +01:00
tcm.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
therm.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
thread_info.h
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
2021-09-09 13:25:49 -07:00
thread_notify.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
timex.h
arm: use fallback for random_get_entropy() instead of zero
2022-05-30 09:29:14 +02:00
tlb.h
mm: account PMD tables like PTE tables
2020-10-13 18:38:31 -07:00
tlbflush.h
mm: update legacy flush_tlb_* to use vma
2021-06-29 10:53:52 -07:00
tls.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
topology.h
arm: disable frequency invariance for CONFIG_BL_SWITCHER
2020-10-08 17:17:27 +02:00
traps.h
arm/asm: add loglvl to c_backtrace()
2020-06-09 09:39:10 -07:00
uaccess-asm.h
ARM: 9113/1: uaccess: remove set_fs() implementation
2021-08-20 11:39:27 +01:00
uaccess.h
ARM: 9179/1: uaccess: avoid alignment faults in copy_[from|to]_kernel_nofault
2022-02-01 17:26:59 +01:00
ucontext.h
ARM: ep93xx: remove MaverickCrunch support
2021-08-04 13:30:04 +02:00
unified.h
ARM: 9116/1: unified: Remove check for gcc < 4
2021-08-20 11:39:28 +01:00
unistd.h
Merge tag 'clone3-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
2019-07-11 10:09:44 -07:00
unwind.h
arm: add loglvl to unwind_backtrace()
2020-06-09 09:39:10 -07:00
uprobes.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
user.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
v7m.h
ARM: 8830/1: NOMMU: Toggle only bits in EXC_RETURN we are really care of
2019-02-01 21:44:19 +00:00
vdso_datapage.h
ARM: 8930/1: Add support for generic vDSO
2019-11-15 22:21:12 +00:00
vdso.h
ARM: 8748/1: mm: Define vdso_start, vdso_end as array
2018-03-24 14:27:49 +00:00
vermagic.h
arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>
2020-04-23 10:50:26 +09:00
vfp.h
ARM: 8991/1: use VFP assembler mnemonics if available
2020-07-21 16:33:39 +01:00
vfpmacros.h
ARM: 8991/1: use VFP assembler mnemonics if available
2020-07-21 16:33:39 +01:00
vga.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
virt.h
arm: Remove the ability to set HYP vectors outside of the decompressor
2020-03-24 10:56:05 +00:00
vmalloc.h
mm/vmalloc: Add empty <asm/vmalloc.h> headers and use them from <linux/vmalloc.h>
2019-12-10 10:12:55 +01:00
vmlinux.lds.h
ARM: Do not use NOCROSSREFS directive with ld.lld
2022-03-11 12:22:35 +01:00
word-at-a-time.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xor.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00