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linux/arch/riscv/kernel
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Dimitri John Ledkov f2928e224d
riscv: set default pm_power_off to NULL 
Set pm_power_off to NULL like on all other architectures, check if it
is set in machine_halt() and machine_power_off() and fallback to
default_power_off if no other power driver got registered.

This brings riscv architecture inline with all other architectures,
and allows to reuse exiting power drivers unmodified.

Kernels without legacy SBI v0.1 extensions (CONFIG_RISCV_SBI_V01 is
not set), do not set pm_power_off to sbi_shutdown(). There is no
support for SBI v0.3 system reset extension either. This prevents
using gpio_poweroff on SiFive HiFive Unmatched.

Tested on SiFive HiFive unmatched, with a dtb specifying gpio-poweroff
node and kernel complied without CONFIG_RISCV_SBI_V01.

BugLink: https://bugs.launchpad.net/bugs/1942806
Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Tested-by: Ron Economos <w6rz@comcast.net>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2021-10-04 14:16:57 -07:00
..
probes
riscv: kprobes: implement the branch instructions
2021-07-21 23:22:34 -07:00
vdso
riscv/vdso: Add support for time namespaces
2021-10-04 14:16:43 -07:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
asm-offsets.c
riscv: Introduce structure that group all variables regarding kernel mapping
2021-07-05 18:04:00 -07:00
cacheinfo.c
drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()
2021-09-01 10:29:10 +02:00
cpu_ops_sbi.c
RISC-V: Support cpu hotplug
2020-03-31 11:28:30 -07:00
cpu_ops_spinwait.c
RISC-V: Add cpu_ops and modify default booting method
2020-03-31 11:25:56 -07:00
cpu_ops.c
treewide: Convert macro and uses of __section(foo) to __section("foo")
2020-10-25 14:51:49 -07:00
cpu-hotplug.c
RISC-V: Support cpu hotplug
2020-03-31 11:28:30 -07:00
cpu.c
RISC-V: Rename and move plic_find_hart_id() to arch directory
2020-06-09 19:11:20 -07:00
cpufeature.c
riscv: Add __init section marker to some functions again
2021-05-29 13:39:27 -07:00
crash_dump.c
RISC-V: Add crash kernel support
2021-04-26 08:25:24 -07:00
crash_save_regs.S
RISC-V: Add kdump support
2021-04-26 08:25:23 -07:00
efi-header.S
RISC-V: Add PE/COFF header for EFI stub
2020-10-02 14:31:16 -07:00
efi.c
RISC-V: Add EFI runtime services
2020-10-02 14:31:28 -07:00
entry.S
riscv: add VMAP_STACK overflow detection
2021-07-06 12:11:38 -07:00
fpu.S
riscv: abstract out CSR names for supervisor vs machine mode
2019-11-05 09:20:42 -08:00
ftrace.c
riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT
2021-01-14 15:09:05 -08:00
head.h
RISC-V: enable XIP
2021-04-26 08:31:28 -07:00
head.S
riscv: Introduce structure that group all variables regarding kernel mapping
2021-07-05 18:04:00 -07:00
image-vars.h
arch/riscv:fix typo in a comment in arch/riscv/kernel/image-vars.h
2021-02-18 23:18:00 -08:00
irq.c
RISC-V: Remove do_IRQ() function
2020-06-09 19:11:24 -07:00
jump_label.c
riscv: Add jump-label implementation
2020-07-30 11:37:43 -07:00
kexec_relocate.S
riscv: Introduce structure that group all variables regarding kernel mapping
2021-07-05 18:04:00 -07:00
kgdb.c
riscv: Fix "no previous prototype" compile warning in kgdb.c file
2020-07-09 20:09:30 -07:00
machine_kexec.c
RISC-V Patches for the 5.14 Merge Window, Part 1
2021-07-09 10:36:29 -07:00
Makefile
riscv: kexec: do not add '-mno-relax' flag if compiler doesn't support it
2021-08-12 07:16:52 -07:00
mcount-dyn.S
riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT
2021-01-14 15:09:05 -08:00
mcount.S
riscv: Workaround mcount name prior to clang-13
2021-04-26 08:25:01 -07:00
module-sections.c
riscv: add missing header file includes
2019-10-28 00:46:01 -07:00
module.c
riscv: module: Create module allocations without exec permissions
2021-04-26 08:25:15 -07:00
patch.c
riscv: Fixup compile error BUILD_BUG_ON failed
2021-01-14 15:09:01 -08:00
perf_callchain.c
riscv: Make stack walk callback consistent with generic code
2020-11-20 18:53:38 -08:00
perf_event.c
riscv: perf_event: Make some funciton static
2020-05-11 13:48:19 -07:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
process.c
riscv: Turn has_fpu into a static key if FPU=y
2021-05-25 22:56:57 -07:00
ptrace.c
riscv: Ensure the value of FP registers in the core dump file is up to date
2021-08-24 20:54:10 -07:00
reset.c
riscv: set default pm_power_off to NULL
2021-10-04 14:16:57 -07:00
riscv_ksyms.c
riscv: provide memmove implementation
2020-12-10 17:27:54 -08:00
sbi.c
RISC-V Patches for the 5.13 Merge Window, Part 1
2021-05-06 09:24:18 -07:00
setup.c
RISC-V Patches for the 5.15 Merge Window, Part 1
2021-09-05 11:31:23 -07:00
signal.c
riscv: Turn has_fpu into a static key if FPU=y
2021-05-25 22:56:57 -07:00
smp.c
RISC-V: Fix error code returned by riscv_hartid_to_cpuid()
2021-05-01 08:53:19 -07:00
smpboot.c
sched/core: Initialize the idle task with preemption disabled
2021-05-12 13:01:45 +02:00
soc.c
riscv: Fix builtin DTB handling
2021-01-07 19:00:50 -08:00
stacktrace.c
riscv: stacktrace: Fix NULL pointer dereference
2021-07-24 12:58:51 -07:00
sys_riscv.c
RISC-V: Don't allow write+exec only page mapping request in mmap
2020-06-18 17:28:53 -07:00
syscall_table.c
riscv/vdso: Refactor asm/vdso.h
2021-10-02 13:42:23 -07:00
time.c
RISC-V Patches for the 5.13 Merge Window, Part 1
2021-05-06 09:24:18 -07:00
traps_misaligned.c
riscv: Unaligned load/store handling for M_MODE
2020-04-03 10:45:33 -07:00
traps.c
trap: cleanup trap_init()
2021-09-08 11:50:27 -07:00
vdso.c
riscv/vdso: Add support for time namespaces
2021-10-04 14:16:43 -07:00
vmlinux-xip.lds.S
riscv: Move EXCEPTION_TABLE to RO_DATA segment
2021-09-10 23:59:48 -07:00
vmlinux.lds.S
riscv: Move EXCEPTION_TABLE to RO_DATA segment
2021-09-10 23:59:48 -07:00