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| author |  Jason A. Donenfeld <Jason@zx2c4.com>
| 2019-11-25 11:31:12 +0100 |
|---|---|---|
| committer |  Herbert Xu <herbert@gondor.apana.org.au>
| 2019-11-27 13:08:49 +0800 |
| commit | 8394bfec51e0e565556101bcc4e2fe7551104cd8 (patch) | |
| tree | f6500eacc0aa2e818f39286ee59f3e106a4b6578 /arch/x86/crypto/poly1305_glue.c | |
| parent | crypto: vmx - Avoid weird build failures (diff) | |
| download | linux-8394bfec51e0e565556101bcc4e2fe7551104cd8.tar.gz linux-8394bfec51e0e565556101bcc4e2fe7551104cd8.tar.bz2 linux-8394bfec51e0e565556101bcc4e2fe7551104cd8.zip | |
crypto: arch - conditionalize crypto api in arch glue for lib code
For glue code that's used by Zinc, the actual Crypto API functions might
not necessarily exist, and don't need to exist either. Before this
patch, there are valid build configurations that lead to a unbuildable
kernel. This fixes it to conditionalize those symbols on the existence
of the proper config entry.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto/poly1305_glue.c')
| -rw-r--r-- | arch/x86/crypto/poly1305_glue.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/crypto/poly1305_glue.c b/arch/x86/crypto/poly1305_glue.c index 370cd88068ec..0cc4537e6617 100644 --- a/arch/x86/crypto/poly1305_glue.c +++ b/arch/x86/crypto/poly1305_glue.c @@ -224,12 +224,13 @@ static int __init poly1305_simd_mod_init(void) cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL)) static_branch_enable(&poly1305_use_avx2); - return crypto_register_shash(&alg); + return IS_REACHABLE(CONFIG_CRYPTO_HASH) ? crypto_register_shash(&alg) : 0; } static void __exit poly1305_simd_mod_exit(void) { - crypto_unregister_shash(&alg); + if (IS_REACHABLE(CONFIG_CRYPTO_HASH)) + crypto_unregister_shash(&alg); } module_init(poly1305_simd_mod_init); |