| Message ID | 20220322152906.112164-1-nathan@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | KVM: x86: Fix clang -Wimplicit-fallthrough in do_host_cpuid() | expand |
Queued, thanks. Paolo
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 58b0b4e0263c..a3c87d2882ad 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -735,6 +735,7 @@ static struct kvm_cpuid_entry2 *do_host_cpuid(struct kvm_cpuid_array *array, if (function > READ_ONCE(max_cpuid_80000000)) return entry; } + break; default: break;
Clang warns: arch/x86/kvm/cpuid.c:739:2: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough] default: ^ arch/x86/kvm/cpuid.c:739:2: note: insert 'break;' to avoid fall-through default: ^ break; 1 error generated. Clang is a little more pedantic than GCC, which does not warn when falling through to a case that is just break or return. Clang's version is more in line with the kernel's own stance in deprecated.rst, which states that all switch/case blocks must end in either break, fallthrough, continue, goto, or return. Add the missing break to silence the warning. Fixes: f144c49e8c39 ("KVM: x86: synthesize CPUID leaf 0x80000021h if useful") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Nathan Chancellor <nathan@kernel.org> --- arch/x86/kvm/cpuid.c | 1 + 1 file changed, 1 insertion(+) base-commit: c9b8fecddb5bb4b67e351bbaeaa648a6f7456912