crypto: lz4 - fixed decompress function to return error code

Decompress function in LZ4 library is supposed to return an error code or
negative result. But, it returns -1 when any error is detected. Return
error code when the library returns negative value.

Signed-off-by: Myungho Jung <mhjungk@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/lz4.c b/crypto/lz4.c
index 71eff9b01b12..2ce2660d3519 100644
--- a/crypto/lz4.c
+++ b/crypto/lz4.c
@@ -97,7 +97,7 @@ static int __lz4_decompress_crypto(const u8 *src, unsigned int slen,
         int out_len = LZ4_decompress_safe(src, dst, slen, *dlen);
 
         if (out_len < 0)
-                return out_len;
+                return -EINVAL;
 
         *dlen = out_len;
         return 0;