From 756724133bd3b89e097c92110221b44cafe0d06a Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Mon, 5 Oct 2026 19:02:37 -0600 Subject: [PATCH] riscv: limit sifive errata to CONFIG_64BIT 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 Link: https://patch.msgid.link/20260916083752.47310-1-arnd@kernel.org Signed-off-by: Paul Walmsley --- arch/riscv/Kconfig.errata | 2 +- arch/riscv/Kconfig.socs | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig.errata b/arch/riscv/Kconfig.errata index 3c945d086c7d..38ade0ea4e9c 100644 --- a/arch/riscv/Kconfig.errata +++ b/arch/riscv/Kconfig.errata @@ -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" diff --git a/arch/riscv/Kconfig.socs b/arch/riscv/Kconfig.socs index 429e07589306..cecbce0c4983 100644 --- a/arch/riscv/Kconfig.socs +++ b/arch/riscv/Kconfig.socs @@ -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.