Messages in this thread Patch in this message |  | | From | Stephen Zhang <> | Subject | [PATCH v4] MIPS: adding a safety check for cpu_has_fpu | Date | Mon, 2 May 2022 11:20:02 +0800 |
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From: Shida Zhang <zhangshida@kylinos.cn>
There is a chance 'cpu_has_fpu' would still be overridden when the CONFIG_MIPS_FP_SUPPORT configuration option has been disabled. So add a safety check for 'cpu_has_fpu'.
Suggested-by: Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by: Shida Zhang <zhangshida@kylinos.cn> --- Changelog in v1 -> v2: - Choose to redefine cpu_has_fpu to solve the problem silently.
Changelog in v2 -> v3: - Choose to point out the error instead.
Changelog in v3 -> v4: - Make the check work for 'nofpu' option.
arch/mips/include/asm/cpu-features.h | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h index de8cb2ccb781..c0983130a44c 100644 --- a/arch/mips/include/asm/cpu-features.h +++ b/arch/mips/include/asm/cpu-features.h @@ -133,6 +133,9 @@ # define raw_cpu_has_fpu 0 # endif #else +# if cpu_has_fpu +# error "Forcing `cpu_has_fpu' to non-zero is not supported" +# endif # define raw_cpu_has_fpu cpu_has_fpu #endif #ifndef cpu_has_32fpr -- 2.30.2
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