crypto: arm64 - Fix unused variable compilation warnings of cpu_feature

The cpu feature defined by MODULE_DEVICE_TABLE is only referenced when compiling as a module, and the warning of unused variable will be encountered when compiling with intree. The warning can be removed by adding the __maybe_unused flag. Fixes: 03c9a33 ("crypto: arm64/ghash - add NEON accelerated fallback for 64-bit PMULL") Fixes: ae1b83c ("crypto: arm64/sm4 - add CE implementation for GCM mode") Reported-by: kernel test robot <[email protected]> Signed-off-by: Tianjia Zhang <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
niw · Nov 18, 2022 · 824db5c · 824db5c
1 parent 4f1c596
commit 824db5c
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/arch/arm64/crypto/ghash-ce-glue.c b/arch/arm64/crypto/ghash-ce-glue.c
@@ -508,7 +508,7 @@ static void __exit ghash_ce_mod_exit(void)
 		crypto_unregister_shash(&ghash_alg);
 }
 
-static const struct cpu_feature ghash_cpu_feature[] = {
+static const struct cpu_feature __maybe_unused ghash_cpu_feature[] = {
 	{ cpu_feature(PMULL) }, { }
 };
 MODULE_DEVICE_TABLE(cpu, ghash_cpu_feature);

diff --git a/arch/arm64/crypto/sm4-ce-gcm-glue.c b/arch/arm64/crypto/sm4-ce-gcm-glue.c
@@ -271,7 +271,7 @@ static void __exit sm4_ce_gcm_exit(void)
 	crypto_unregister_aead(&sm4_gcm_alg);
 }
 
-static const struct cpu_feature sm4_ce_gcm_cpu_feature[] = {
+static const struct cpu_feature __maybe_unused sm4_ce_gcm_cpu_feature[] = {
 	{ cpu_feature(PMULL) },
 	{}
 };