From: Joonsoo Kim Subject: [PATCH v3 2/9] crypto/lzo: support decompress_noctx Date: Fri, 18 Sep 2015 14:19:17 +0900 Message-ID: <1442553564-3476-3-git-send-email-iamjoonsoo.kim@lge.com> References: <1442553564-3476-1-git-send-email-iamjoonsoo.kim@lge.com> Cc: Minchan Kim , Nitin Gupta , Sergey Senozhatsky , linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, Herbert Xu , "David S. Miller" , Stephan Mueller , Joonsoo Kim To: Andrew Morton Return-path: In-Reply-To: <1442553564-3476-1-git-send-email-iamjoonsoo.kim@lge.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org lzo's decompression doesn't requires any scratch buffer so it doesn't need tfm context. Hence, it can support crypto compression noctx API and this patch implements it. Signed-off-by: Joonsoo Kim --- crypto/lzo.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/crypto/lzo.c b/crypto/lzo.c index ec0f7b3..3cc0ce7 100644 --- a/crypto/lzo.c +++ b/crypto/lzo.c @@ -80,6 +80,12 @@ static int lzo_decompress(struct crypto_tfm *tfm, const u8 *src, } +static int lzo_decompress_noctx(const u8 *src, unsigned int slen, + u8 *dst, unsigned int *dlen) +{ + return lzo_decompress(NULL, src, slen, dst, dlen); +} + static struct crypto_alg alg = { .cra_name = "lzo", .cra_flags = CRYPTO_ALG_TYPE_COMPRESS, @@ -90,7 +96,7 @@ static struct crypto_alg alg = { .cra_u = { .compress = { .coa_compress = lzo_compress, .coa_decompress = lzo_decompress, - .coa_decompress_noctx = NULL } } + .coa_decompress_noctx = lzo_decompress_noctx } } }; static int __init lzo_mod_init(void) -- 1.9.1