Subject: [RFC PATCH 17/21] crypto: cavium/zip - drop obsolete 'comp' implementation

From: Ard Biesheuvel <[email-masked]>
Date: Tue, 18 Jul 2023 14:58:43 +0200

The 'comp' API is obsolete and will be removed, so remove this comp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

Signed-off-by: Ard Biesheuvel <[email-masked]>
---
 drivers/crypto/cavium/zip/zip_crypto.c | 40 ----------------
 drivers/crypto/cavium/zip/zip_crypto.h | 10 ----
 drivers/crypto/cavium/zip/zip_main.c   | 50 +-------------------
 3 files changed, 1 insertion(+), 99 deletions(-)

diff --git a/drivers/crypto/cavium/zip/zip_crypto.c b/drivers/crypto/cavium/zip/zip_crypto.c
index 1046a746d36f551c..5edad3b1d1dc8398 100644
--- a/drivers/crypto/cavium/zip/zip_crypto.c
+++ b/drivers/crypto/cavium/zip/zip_crypto.c
@@ -195,46 +195,6 @@ static int zip_decompress(const u8 *src, unsigned int slen,
 	return ret;
 }
 
-/* Legacy Compress framework start */
-int zip_alloc_comp_ctx_deflate(struct crypto_tfm *tfm)
-{
-	struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm);
-
-	return zip_ctx_init(zip_ctx, 0);
-}
-
-int zip_alloc_comp_ctx_lzs(struct crypto_tfm *tfm)
-{
-	struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm);
-
-	return zip_ctx_init(zip_ctx, 1);
-}
-
-void zip_free_comp_ctx(struct crypto_tfm *tfm)
-{
-	struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm);
-
-	zip_ctx_exit(zip_ctx);
-}
-
-int  zip_comp_compress(struct crypto_tfm *tfm,
-		       const u8 *src, unsigned int slen,
-		       u8 *dst, unsigned int *dlen)
-{
-	struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm);
-
-	return zip_compress(src, slen, dst, dlen, zip_ctx);
-}
-
-int  zip_comp_decompress(struct crypto_tfm *tfm,
-			 const u8 *src, unsigned int slen,
-			 u8 *dst, unsigned int *dlen)
-{
-	struct zip_kernel_ctx *zip_ctx = crypto_tfm_ctx(tfm);
-
-	return zip_decompress(src, slen, dst, dlen, zip_ctx);
-} /* Legacy compress framework end */
-
 /* SCOMP framework start */
 void *zip_alloc_scomp_ctx_deflate(struct crypto_scomp *tfm)
 {
diff --git a/drivers/crypto/cavium/zip/zip_crypto.h b/drivers/crypto/cavium/zip/zip_crypto.h
index b59ddfcacd34447e..a1ae3825fb65c3b6 100644
--- a/drivers/crypto/cavium/zip/zip_crypto.h
+++ b/drivers/crypto/cavium/zip/zip_crypto.h
@@ -57,16 +57,6 @@ struct zip_kernel_ctx {
 	struct zip_operation zip_decomp;
 };
 
-int  zip_alloc_comp_ctx_deflate(struct crypto_tfm *tfm);
-int  zip_alloc_comp_ctx_lzs(struct crypto_tfm *tfm);
-void zip_free_comp_ctx(struct crypto_tfm *tfm);
-int  zip_comp_compress(struct crypto_tfm *tfm,
-		       const u8 *src, unsigned int slen,
-		       u8 *dst, unsigned int *dlen);
-int  zip_comp_decompress(struct crypto_tfm *tfm,
-			 const u8 *src, unsigned int slen,
-			 u8 *dst, unsigned int *dlen);
-
 void *zip_alloc_scomp_ctx_deflate(struct crypto_scomp *tfm);
 void *zip_alloc_scomp_ctx_lzs(struct crypto_scomp *tfm);
 void  zip_free_scomp_ctx(struct crypto_scomp *tfm, void *zip_ctx);
diff --git a/drivers/crypto/cavium/zip/zip_main.c b/drivers/crypto/cavium/zip/zip_main.c
index dc5b7bf7e1fd9867..abd58de4343ddd8e 100644
--- a/drivers/crypto/cavium/zip/zip_main.c
+++ b/drivers/crypto/cavium/zip/zip_main.c
@@ -371,36 +371,6 @@ static struct pci_driver zip_driver = {
 
 /* Kernel Crypto Subsystem Interface */
 
-static struct crypto_alg zip_comp_deflate = {
-	.cra_name		= "deflate",
-	.cra_driver_name	= "deflate-cavium",
-	.cra_flags		= CRYPTO_ALG_TYPE_COMPRESS,
-	.cra_ctxsize		= sizeof(struct zip_kernel_ctx),
-	.cra_priority           = 300,
-	.cra_module		= THIS_MODULE,
-	.cra_init		= zip_alloc_comp_ctx_deflate,
-	.cra_exit		= zip_free_comp_ctx,
-	.cra_u			= { .compress = {
-		.coa_compress	= zip_comp_compress,
-		.coa_decompress	= zip_comp_decompress
-		 } }
-};
-
-static struct crypto_alg zip_comp_lzs = {
-	.cra_name		= "lzs",
-	.cra_driver_name	= "lzs-cavium",
-	.cra_flags		= CRYPTO_ALG_TYPE_COMPRESS,
-	.cra_ctxsize		= sizeof(struct zip_kernel_ctx),
-	.cra_priority           = 300,
-	.cra_module		= THIS_MODULE,
-	.cra_init		= zip_alloc_comp_ctx_lzs,
-	.cra_exit		= zip_free_comp_ctx,
-	.cra_u			= { .compress = {
-		.coa_compress	= zip_comp_compress,
-		.coa_decompress	= zip_comp_decompress
-		 } }
-};
-
 static struct scomp_alg zip_scomp_deflate = {
 	.alloc_ctx		= zip_alloc_scomp_ctx_deflate,
 	.free_ctx		= zip_free_scomp_ctx,
@@ -431,22 +401,10 @@ static int zip_register_compression_device(void)
 {
 	int ret;
 
-	ret = crypto_register_alg(&zip_comp_deflate);
-	if (ret < 0) {
-		zip_err("Deflate algorithm registration failed\n");
-		return ret;
-	}
-
-	ret = crypto_register_alg(&zip_comp_lzs);
-	if (ret < 0) {
-		zip_err("LZS algorithm registration failed\n");
-		goto err_unregister_alg_deflate;
-	}
-
 	ret = crypto_register_scomp(&zip_scomp_deflate);
 	if (ret < 0) {
 		zip_err("Deflate scomp algorithm registration failed\n");
-		goto err_unregister_alg_lzs;
+		return ret;
 	}
 
 	ret = crypto_register_scomp(&zip_scomp_lzs);
@@ -459,18 +417,12 @@ static int zip_register_compression_device(void)
 
 err_unregister_scomp_deflate:
 	crypto_unregister_scomp(&zip_scomp_deflate);
-err_unregister_alg_lzs:
-	crypto_unregister_alg(&zip_comp_lzs);
-err_unregister_alg_deflate:
-	crypto_unregister_alg(&zip_comp_deflate);
 
 	return ret;
 }
 
 static void zip_unregister_compression_device(void)
 {
-	crypto_unregister_alg(&zip_comp_deflate);
-	crypto_unregister_alg(&zip_comp_lzs);
 	crypto_unregister_scomp(&zip_scomp_deflate);
 	crypto_unregister_scomp(&zip_scomp_lzs);
 }
-- 
2.39.2