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riscv: limit sifive errata to CONFIG_64BIT

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There are two errata for this vendor, and they both individually depend on
CONFIG_64BIT already. However, an 32-bit allmodconfig produces this warning
from clang for a condition that can never be true.

arch/riscv/errata/sifive/errata.c:29:14: error: result of comparison of constant 9223372036854775815 with expression of type 'unsigned long' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
   29 |         if (arch_id != 0x8000000000000007 ||
      |             ~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~
arch/riscv/errata/sifive/errata.c:42:14: error: result of comparison of constant 9223372036854775815 with expression of type 'unsigned long' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
   42 |         if (arch_id != 0x8000000000000007 && arch_id != 0x1)
      |             ~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260916083752.47310-1-arnd@kernel.org
Signed-off-by: Paul Walmsley <pjw@kernel.org>
This commit is contained in:
Arnd Bergmann 2026-10-05 19:02:37 -06:00 committed by Paul Walmsley
parent edba6017c1
commit 756724133b
2 changed files with 2 additions and 1 deletions
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2
arch/riscv/Kconfig.errata
View File

@ -46,7 +46,7 @@ config ERRATA_MIPS_P8700_PAUSE_OPCODE
config ERRATA_SIFIVE
bool "SiFive errata"
depends on RISCV_ALTERNATIVE
depends on RISCV_ALTERNATIVE && 64BIT
help
All SiFive errata Kconfig depend on this Kconfig. Disabling
this Kconfig will disable all SiFive errata. Please say "Y"

1
arch/riscv/Kconfig.socs
View File

@ -34,6 +34,7 @@ config ARCH_RENESAS
config ARCH_SIFIVE
bool "SiFive SoCs"
select ERRATA_SIFIVE
depends on 64BIT
help
This enables support for SiFive SoC platform hardware.