From: Stefan Agner stefan@agner.ch
[ Upstream commit c785896b21dd8e156326ff660050b0074d3431df ]
The table id (second) argument to MODULE_DEVICE_TABLE is often referenced otherwise. This is not the case for CPU features. This leads to warnings when building the kernel with Clang: arch/arm/crypto/aes-ce-glue.c:450:1: warning: variable 'cpu_feature_match_AES' is not needed and will not be emitted [-Wunneeded-internal-declaration] module_cpu_feature_match(AES, aes_init); ^
Avoid warnings by using __maybe_unused, similar to commit 1f318a8bafcf ("modules: mark __inittest/__exittest as __maybe_unused").
Fixes: 67bad2fdb754 ("cpu: add generic support for CPU feature based module autoloading") Signed-off-by: Stefan Agner stefan@agner.ch Acked-by: Ard Biesheuvel ard.biesheuvel@linaro.org Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/cpufeature.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/cpufeature.h b/include/linux/cpufeature.h index 986c06c88d814..84d3c81b59781 100644 --- a/include/linux/cpufeature.h +++ b/include/linux/cpufeature.h @@ -45,7 +45,7 @@ * 'asm/cpufeature.h' of your favorite architecture. */ #define module_cpu_feature_match(x, __initfunc) \ -static struct cpu_feature const cpu_feature_match_ ## x[] = \ +static struct cpu_feature const __maybe_unused cpu_feature_match_ ## x[] = \ { { .feature = cpu_feature(x) }, { } }; \ MODULE_DEVICE_TABLE(cpu, cpu_feature_match_ ## x); \ \