crypto: geniv - Remove unused spinlock from struct aead_geniv_ctx

The spin lock in geniv hasn't been used in over 10 years.  Remove it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Author: herbertx

crypto/geniv.c

@@ -112,8 +112,6 @@ int aead_init_geniv(struct crypto_aead *aead)
 	struct crypto_aead *child;
 	int err;
 
-	spin_lock_init(&ctx->lock);
-
 	err = crypto_stdrng_get_bytes(ctx->salt, crypto_aead_ivsize(aead));
 	if (err)
 		goto out;

include/crypto/internal/geniv.h

@@ -9,11 +9,9 @@
 #define _CRYPTO_INTERNAL_GENIV_H
 
 #include <crypto/internal/aead.h>
-#include <linux/spinlock.h>
 #include <linux/types.h>
 
 struct aead_geniv_ctx {
-	spinlock_t lock;
 	struct crypto_aead *child;
 	u8 salt[] __attribute__ ((aligned(__alignof__(u32))));
 };