[RFC PATCH 10/21] crypto: 842 - drop obsolete 'comp' implementation

[Ard Biesheuvel]

The 'comp' API is obsolete and will be removed, so remove this comp
implementation.

Signed-off-by: Ard Biesheuvel <a...@kernel.org>
---
 crypto/842.c | 63 +-------------------
 1 file changed, 1 insertion(+), 62 deletions(-)

diff --git a/crypto/842.c b/crypto/842.c
index e59e54d769609ba6..5001d88cf727f74e 100644
--- a/crypto/842.c
+++ b/crypto/842.c
@@ -39,38 +39,11 @@ static void *crypto842_alloc_ctx(struct crypto_scomp *tfm)
        return ctx;
 }
 
-static int crypto842_init(struct crypto_tfm *tfm)
-{
-       struct crypto842_ctx *ctx = crypto_tfm_ctx(tfm);
-
-       ctx->wmem = crypto842_alloc_ctx(NULL);
-       if (IS_ERR(ctx->wmem))
-               return -ENOMEM;
-
-       return 0;
-}
-
 static void crypto842_free_ctx(struct crypto_scomp *tfm, void *ctx)
 {
        kfree(ctx);
 }
 
-static void crypto842_exit(struct crypto_tfm *tfm)
-{
-       struct crypto842_ctx *ctx = crypto_tfm_ctx(tfm);
-
-       crypto842_free_ctx(NULL, ctx->wmem);
-}
-
-static int crypto842_compress(struct crypto_tfm *tfm,
-                             const u8 *src, unsigned int slen,
-                             u8 *dst, unsigned int *dlen)
-{
-       struct crypto842_ctx *ctx = crypto_tfm_ctx(tfm);
-
-       return sw842_compress(src, slen, dst, dlen, ctx->wmem);
-}
-
 static int crypto842_scompress(struct crypto_scomp *tfm,
                               const u8 *src, unsigned int slen,
                               u8 *dst, unsigned int *dlen, void *ctx)
@@ -78,13 +51,6 @@ static int crypto842_scompress(struct crypto_scomp *tfm,
        return sw842_compress(src, slen, dst, dlen, ctx);
 }
 
-static int crypto842_decompress(struct crypto_tfm *tfm,
-                               const u8 *src, unsigned int slen,
-                               u8 *dst, unsigned int *dlen)
-{
-       return sw842_decompress(src, slen, dst, dlen);
-}
-
 static int crypto842_sdecompress(struct crypto_scomp *tfm,
                                 const u8 *src, unsigned int slen,
                                 u8 *dst, unsigned int *dlen, void *ctx)
@@ -92,20 +58,6 @@ static int crypto842_sdecompress(struct crypto_scomp *tfm,
        return sw842_decompress(src, slen, dst, dlen);
 }
 
-static struct crypto_alg alg = {
-       .cra_name               = "842",
-       .cra_driver_name        = "842-generic",
-       .cra_priority           = 100,
-       .cra_flags              = CRYPTO_ALG_TYPE_COMPRESS,
-       .cra_ctxsize            = sizeof(struct crypto842_ctx),
-       .cra_module             = THIS_MODULE,
-       .cra_init               = crypto842_init,
-       .cra_exit               = crypto842_exit,
-       .cra_u                  = { .compress = {
-       .coa_compress           = crypto842_compress,
-       .coa_decompress         = crypto842_decompress } }
-};
-
 static struct scomp_alg scomp = {
        .alloc_ctx              = crypto842_alloc_ctx,
        .free_ctx               = crypto842_free_ctx,
@@ -121,25 +73,12 @@ static struct scomp_alg scomp = {
 
 static int __init crypto842_mod_init(void)
 {
-       int ret;
-
-       ret = crypto_register_alg(&alg);
-       if (ret)
-               return ret;
-
-       ret = crypto_register_scomp(&scomp);
-       if (ret) {
-               crypto_unregister_alg(&alg);
-               return ret;
-       }
-
-       return ret;
+       return crypto_register_scomp(&scomp);
 }
 subsys_initcall(crypto842_mod_init);
 
 static void __exit crypto842_mod_exit(void)
 {
-       crypto_unregister_alg(&alg);
        crypto_unregister_scomp(&scomp);
 }
 module_exit(crypto842_mod_exit);
-- 
2.39.2