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crypto: arch - conditionalize crypto api in arch glue for lib code

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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>
This commit is contained in:
Jason A. Donenfeld
2019-11-25 11:31:12 +01:00
committed by Herbert Xu
parent 4ee812f614
commit 8394bfec51
11 changed files with 53 additions and 32 deletions
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9
arch/arm/crypto/poly1305-glue.c
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@@ -249,16 +249,19 @@ static int __init arm_poly1305_mod_init(void)
if (IS_ENABLED(CONFIG_KERNEL_MODE_NEON) &&
(elf_hwcap & HWCAP_NEON))
static_branch_enable(&have_neon);
else
else if (IS_REACHABLE(CONFIG_CRYPTO_HASH))
/* register only the first entry */
return crypto_register_shash(&arm_poly1305_algs[0]);
return crypto_register_shashes(arm_poly1305_algs,
ARRAY_SIZE(arm_poly1305_algs));
return IS_REACHABLE(CONFIG_CRYPTO_HASH) ?
crypto_register_shashes(arm_poly1305_algs,
ARRAY_SIZE(arm_poly1305_algs)) : 0;
}
static void __exit arm_poly1305_mod_exit(void)
{
if (!IS_REACHABLE(CONFIG_CRYPTO_HASH))
return;
if (!static_branch_likely(&have_neon)) {
crypto_unregister_shash(&arm_poly1305_algs[0]);
return;