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[v3,4/9] crypto/lz4hc: support decompress_noctx

Message ID 1442553564-3476-5-git-send-email-iamjoonsoo.kim@lge.com (mailing list archive)
State Changes Requested
Delegated to: Herbert Xu
Headers show

Commit Message

Joonsoo Kim Sept. 18, 2015, 5:19 a.m. UTC 
lz4hc'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@lge.com>
---
 crypto/lz4hc.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
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Patch

diff --git a/crypto/lz4hc.c b/crypto/lz4hc.c
index 0cb38a7..0797065 100644
--- a/crypto/lz4hc.c
+++ b/crypto/lz4hc.c
@@ -76,6 +76,12 @@  static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
 	return err;
 }
 
+static int lz4hc_decompress_noctx(const u8 *src, unsigned int slen,
+				  u8 *dst, unsigned int *dlen)
+{
+	return lz4hc_decompress_crypto(NULL, src, slen, dst, dlen);
+}
+
 static struct crypto_alg alg_lz4hc = {
 	.cra_name		= "lz4hc",
 	.cra_flags		= CRYPTO_ALG_TYPE_COMPRESS,
@@ -87,7 +93,7 @@  static struct crypto_alg alg_lz4hc = {
 	.cra_u			= { .compress = {
 	.coa_compress		= lz4hc_compress_crypto,
 	.coa_decompress		= lz4hc_decompress_crypto,
-	.coa_decompress_noctx	= NULL } }
+	.coa_decompress_noctx	= lz4hc_decompress_noctx } }
 };
 
 static int __init lz4hc_mod_init(void)