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crypto: arm/crc32 - avoid warning when compiling with Clang 

The table id (second) argument to MODULE_DEVICE_TABLE is often
referenced otherwise. This is not the case for CPU features. This
leads to a warning when building the kernel with Clang:
  arch/arm/crypto/crc32-ce-glue.c:239:33: warning: variable
    'crc32_cpu_feature' is not needed and will not be emitted
    [-Wunneeded-internal-declaration]
  static const struct cpu_feature crc32_cpu_feature[] = {
                                  ^

Avoid warnings by using __maybe_unused, similar to commit 1f318a8baf
("modules: mark __inittest/__exittest as __maybe_unused").

Fixes: 2a9faf8b7e ("crypto: arm/crc32 - enable module autoloading based on CPU feature bits")
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>
This commit is contained in:
Stefan Agner 2018-09-15 21:38:25 -07:00 committed by Herbert Xu
parent c785896b21
commit cd560235d8
1 changed files with 1 additions and 1 deletions
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2
arch/arm/crypto/crc32-ce-glue.c
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@ -236,7 +236,7 @@ static void __exit crc32_pmull_mod_exit(void)
ARRAY_SIZE(crc32_pmull_algs));
}
static const struct cpu_feature crc32_cpu_feature[] = {
static const struct cpu_feature __maybe_unused crc32_cpu_feature[] = {
{ cpu_feature(CRC32) }, { cpu_feature(PMULL) }, { }
};
MODULE_DEVICE_TABLE(cpu, crc32_cpu_feature);