linux-kernel - [PATCH v3 5/9] crypto/842: support decompress

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Message-Id: <1442553564-3476-6-git-send-email-iamjoonsoo.kim@lge.com>
Date:	Fri, 18 Sep 2015 14:19:20 +0900
From:	Joonsoo Kim <js1304@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Minchan Kim <minchan@...nel.org>, Nitin Gupta <ngupta@...are.org>,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Stephan Mueller <smueller@...onox.de>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH v3 5/9] crypto/842: support decompress_noctx

842'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 <iamjoonsoo.kim@....com>
---
 crypto/842.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/crypto/842.c b/crypto/842.c
index 1b6cdab..a933f71 100644
--- a/crypto/842.c
+++ b/crypto/842.c
@@ -52,6 +52,12 @@ static int crypto842_decompress(struct crypto_tfm *tfm,
 	return sw842_decompress(src, slen, dst, dlen);
 }
 
+static int crypto842_decompress_noctx(const u8 *src, unsigned int slen,
+				      u8 *dst, unsigned int *dlen)
+{
+	return sw842_decompress(src, slen, dst, dlen);
+}
+
 static struct crypto_alg alg = {
 	.cra_name		= "842",
 	.cra_driver_name	= "842-generic",
@@ -62,7 +68,7 @@ static struct crypto_alg alg = {
 	.cra_u			= { .compress = {
 	.coa_compress		= crypto842_compress,
 	.coa_decompress		= crypto842_decompress,
-	.coa_decompress_noctx	= NULL } }
+	.coa_decompress_noctx	= crypto842_decompress_noctx } }
 };
 
 static int __init crypto842_mod_init(void)
-- 
1.9.1

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