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authorAndrew Jones2022-12-01 12:37:50 +0100
committerPalmer Dabbelt2022-12-12 22:21:25 -0800
commite923f4625ed3ad7656c3f9f086c898798bafbbc5 (patch)
tree74a38b5b6659e88c3e8402a180b117ec8afead9f /arch/riscv
parentc3ec1e8964fb0ca00c79936160a027bd8b47e140 (diff)
riscv: Apply a static assert to riscv_isa_ext_id
Add a static assert to ensure a RISCV_ISA_EXT_* enum is never created with a value >= RISCV_ISA_EXT_MAX. We can do this by putting RISCV_ISA_EXT_ID_MAX to more work. Before it was redundant with RISCV_ISA_EXT_MAX and hence only used to document the limit. Now it grows with the enum and is used to check the limit. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20221201113750.18021-1-ajones@ventanamicro.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/include/asm/hwcap.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index b22525290073..86328e3acb02 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -59,8 +59,9 @@ enum riscv_isa_ext_id {
RISCV_ISA_EXT_ZIHINTPAUSE,
RISCV_ISA_EXT_SSTC,
RISCV_ISA_EXT_SVINVAL,
- RISCV_ISA_EXT_ID_MAX = RISCV_ISA_EXT_MAX,
+ RISCV_ISA_EXT_ID_MAX
};
+static_assert(RISCV_ISA_EXT_ID_MAX <= RISCV_ISA_EXT_MAX);
/*
* This enum represents the logical ID for each RISC-V ISA extension static