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Andrew Jones ccfe866220 RISC-V: Align SBI probe implementation with spec 
commit 41cad8284d upstream.

sbi_probe_extension() is specified with "Returns 0 if the given SBI
extension ID (EID) is not available, or 1 if it is available unless
defined as any other non-zero value by the implementation."
Additionally, sbiret.value is a long. Fix the implementation to
ensure any nonzero long value is considered a success, rather
than only positive int values.

Fixes: b9dcd9e415 ("RISC-V: Add basic support for SBI v0.2")
Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230427163626.101042-1-ajones@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2023-05-11 23:03:04 +09:00
..
vdso riscv: fix detection of toolchain Zihintpause support 2022-10-27 15:13:06 -07:00
Kbuild RISC-V: Move to queued RW locks 2022-05-11 11:50:10 -07:00
alternative-macros.h riscv: Move alternative length validation into subsection 2022-06-02 15:55:22 -07:00
alternative.h riscv: add memory-type errata for T-Head 2022-05-11 21:36:33 -07:00
asm-extable.h riscv: extable: add a dedicated uaccess handler 2022-01-05 17:53:29 -08:00
asm-offsets.h
…
asm-prototypes.h
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asm.h RISC-V: Fix a race condition during kernel stack overflow 2022-12-01 11:38:39 -08:00
atomic.h riscv: atomic: Add custom conditional atomic operation implementation 2022-05-21 10:31:47 -07:00
barrier.h riscv: introduce nops and __nops macros for NOP sequences 2022-07-21 17:17:29 -07:00
bitops.h include: move find.h from asm_generic to linux 2022-01-15 08:47:31 -08:00
bug.h bug: Use normal relative pointers in 'struct bug_entry' 2022-05-19 23:46:10 +02:00
cache.h riscv: Add support for non-coherent devices using zicbom extension 2022-07-28 15:30:51 -07:00
cacheflush.h RISC-V: Fix compilation without RISCV_ISA_ZICBOM 2022-10-21 11:52:39 +05:30
cacheinfo.h
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clint.h
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clocksource.h
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cmpxchg.h riscv: atomic: Cleanup unnecessary definition 2022-05-21 10:31:45 -07:00
compat.h riscv: compat: Add basic compat data type implementation 2022-04-26 13:36:12 -07:00
cpu_ops.h RISC-V: Declare cpu_ops_spinwait in <asm/cpu_ops.h> 2022-08-11 13:06:47 -07:00
cpu_ops_sbi.h riscv: ensure cpu_ops_sbi is declared 2022-08-11 13:46:51 -07:00
cpuidle.h RISC-V: Enable CPU_IDLE drivers 2022-03-10 09:29:21 -08:00
csr.h RISC-V: Add Sstc extension support 2022-08-11 14:41:52 -07:00
current.h riscv: Rename "sp_in_global" to "current_stack_pointer" 2022-03-30 15:15:27 -07:00
delay.h
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efi.h riscv: Sync efi page table's kernel mappings before switching 2022-11-28 16:36:34 -08:00
elf.h riscv: Add cache information in AUX vector 2022-10-13 11:06:56 -07:00
errata_list.h riscv: implement Zicbom-based CMO instructions + the t-head variant 2022-08-10 20:49:32 -07:00
extable.h riscv: extable: add `type` and `data` fields 2022-01-05 17:52:54 -08:00
fence.h
…
fixmap.h riscv: Move early dtb mapping into the fixmap region 2023-05-01 08:26:28 +09:00
ftrace.h RISC-V: Don't check text_mutex during stop_machine 2023-03-17 08:50:29 +01:00
futex.h riscv: extable: add a dedicated uaccess handler 2022-01-05 17:53:29 -08:00
gdb_xml.h
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gpr-num.h riscv: Add X register names to gpr-nums 2022-10-02 10:17:58 +05:30
hugetlb.h riscv/mm: add arch hook arch_clear_hugepage_flags 2022-12-31 13:32:36 +01:00
hwcap.h RISC-V: Probe Svinval extension form ISA string 2022-10-02 10:18:31 +05:30
image.h
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insn-def.h RISC-V: KVM: Use Svinval for local TLB maintenance when available 2022-10-02 10:18:37 +05:30
io.h RISC-V: Fix MEMREMAP_WB for systems with Svpbmt 2022-12-31 13:32:37 +01:00
irq.h
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irq_work.h riscv: Fix irq_work when SMP is disabled 2022-06-01 21:46:31 -07:00
irqflags.h
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jump_label.h riscv: jump_label: Fixup unaligned arch_static_branch function 2023-03-10 09:34:30 +01:00
kasan.h riscv: Implement sv48 support 2022-01-19 17:54:09 -08:00
kdebug.h
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kexec.h RISC-V: kexec: Fix memory leak of fdt buffer 2023-01-07 11:11:53 +01:00
kfence.h
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kgdb.h
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kprobes.h kprobes: treewide: Make it harder to refer kretprobe_trampoline directly 2021-09-30 21:24:06 -04:00
kvm_host.h RISC-V: KVM: Record number of signal exits as a vCPU stat 2022-10-02 10:19:16 +05:30
kvm_types.h KVM: RISC-V: Use common KVM implementation of MMU memory caches 2022-01-06 14:38:50 +05:30
kvm_vcpu_fp.h RISC-V: KVM: Improve ISA extension by using a bitmap 2022-07-29 17:14:11 +05:30
kvm_vcpu_insn.h RISC-V: KVM: Add extensible CSR emulation framework 2022-07-29 17:14:53 +05:30
kvm_vcpu_sbi.h RISC-V: KVM: Change the SBI specification version to v1.0 2022-10-02 10:18:25 +05:30
kvm_vcpu_timer.h RISC-V: KVM: Fix kvm_riscv_vcpu_timer_pending() for Sstc 2022-10-21 11:52:45 +05:30
linkage.h
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mmio.h
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mmiowb.h
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mmu.h Revert "riscv: mm: notify remote harts about mmu cache updates" 2023-03-22 13:34:00 +01:00
mmu_context.h
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mmzone.h
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module.h
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module.lds.h riscv module: remove (NOLOAD) 2022-03-29 14:31:07 -07:00
numa.h
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page.h arch/*/: remove CONFIG_VIRT_TO_BUS 2022-06-28 13:20:21 +02:00
parse_asm.h riscv: Add header include guards to insn.h 2023-03-17 08:50:21 +01:00
patch.h RISC-V: Don't check text_mutex during stop_machine 2023-03-17 08:50:29 +01:00
pci.h RISC-V Patches for the 5.20 Merge Window, Part 1 2022-08-06 15:04:48 -07:00
perf_event.h RISC-V: Remove the current perf implementation 2022-03-21 14:58:12 -07:00
pgalloc.h riscv: Sync efi page table's kernel mappings before switching 2022-11-28 16:36:34 -08:00
pgtable-32.h riscv: add RISC-V Svpbmt extension support 2022-05-11 21:36:33 -07:00
pgtable-64.h riscv: Fix P4D_SHIFT definition for 3-level page table mode 2022-12-31 13:32:38 +01:00
pgtable-bits.h riscv: add RISC-V Svpbmt extension support 2022-05-11 21:36:33 -07:00
pgtable.h riscv: Move early dtb mapping into the fixmap region 2023-05-01 08:26:28 +09:00
probes.h
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processor.h kernel: exit: cleanup release_thread() 2022-09-11 21:55:07 -07:00
ptdump.h
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ptrace.h
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sbi.h RISC-V: Align SBI probe implementation with spec 2023-05-11 23:03:04 +09:00
seccomp.h
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sections.h
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set_memory.h
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signal.h riscv: signal: fix missing prototype warning 2022-08-18 14:42:52 -07:00
signal32.h riscv: compat: signal: Add rt_frame implementation 2022-05-17 16:37:21 -07:00
smp.h riscv: kexec: Fixup crash_smp_send_stop without multi cores 2022-11-29 21:50:59 -08:00
soc.h
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sparsemem.h riscv: Allow to dynamically define VA_BITS 2022-01-19 17:54:07 -08:00
stackprotector.h
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stacktrace.h
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string.h
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suspend.h RISC-V: Add arch functions for non-retentive suspend entry/exit 2022-03-10 09:29:31 -08:00
switch_to.h riscv: switch has_fpu() to the unified static key mechanism 2022-06-16 10:51:31 -07:00
syscall.h riscv: compat: syscall: Add compat_sys_call_table implementation 2022-04-26 13:36:25 -07:00
thread_info.h RISC-V: add a spin_shadow_stack declaration 2023-03-10 09:34:29 +01:00
timex.h riscv: use fallback for random_get_entropy() instead of zero 2022-05-13 23:59:23 +02:00
tlb.h
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tlbflush.h riscv: mm: Fix incorrect ASID argument when flushing TLB 2023-03-30 12:49:28 +02:00
uaccess.h riscv: uaccess: fix type of 0 variable on error in get_user() 2023-01-12 12:02:50 +01:00
unistd.h riscv: Wire up memfd_secret in UAPI header 2022-06-01 21:46:36 -07:00
uprobes.h
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vdso.h riscv: compat: vdso: Add COMPAT_VDSO base code implementation 2022-04-26 13:36:53 -07:00
vendorid_list.h riscv: add memory-type errata for T-Head 2022-05-11 21:36:33 -07:00
vermagic.h
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vmalloc.h
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word-at-a-time.h
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xip_fixup.h RISC-V: Split out the XIP fixups into their own file 2022-05-25 14:43:33 -07:00