crypto: compress - Return produced bytes in crypto_{,de}compress_{update,final}

If crypto_{,de}compress_{update,final}() succeed, return the actual number of
bytes produced instead of zero, so their users don't have to calculate that
theirselves.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 12 insertions, 12 deletions

diff --git a/crypto/zlib.c b/crypto/zlib.c
index 33609bab614e..c3015733c990 100644
--- a/crypto/zlib.c
+++ b/crypto/zlib.c
@@ -165,15 +165,15 @@ static int zlib_compress_update(struct crypto_pcomp *tfm,
                 return -EINVAL;
         }
 
+        ret = req->avail_out - stream->avail_out;
         pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
                  stream->avail_in, stream->avail_out,
-                 req->avail_in - stream->avail_in,
-                 req->avail_out - stream->avail_out);
+                 req->avail_in - stream->avail_in, ret);
         req->next_in = stream->next_in;
         req->avail_in = stream->avail_in;
         req->next_out = stream->next_out;
         req->avail_out = stream->avail_out;
-        return 0;
+        return ret;
 }
 
 static int zlib_compress_final(struct crypto_pcomp *tfm,
@@ -195,15 +195,15 @@ static int zlib_compress_final(struct crypto_pcomp *tfm,
                 return -EINVAL;
         }
 
+        ret = req->avail_out - stream->avail_out;
         pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
                  stream->avail_in, stream->avail_out,
-                 req->avail_in - stream->avail_in,
-                 req->avail_out - stream->avail_out);
+                 req->avail_in - stream->avail_in, ret);
         req->next_in = stream->next_in;
         req->avail_in = stream->avail_in;
         req->next_out = stream->next_out;
         req->avail_out = stream->avail_out;
-        return 0;
+        return ret;
 }
 
 
@@ -280,15 +280,15 @@ static int zlib_decompress_update(struct crypto_pcomp *tfm,
                 return -EINVAL;
         }
 
+        ret = req->avail_out - stream->avail_out;
         pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
                  stream->avail_in, stream->avail_out,
-                 req->avail_in - stream->avail_in,
-                 req->avail_out - stream->avail_out);
+                 req->avail_in - stream->avail_in, ret);
         req->next_in = stream->next_in;
         req->avail_in = stream->avail_in;
         req->next_out = stream->next_out;
         req->avail_out = stream->avail_out;
-        return 0;
+        return ret;
 }
 
 static int zlib_decompress_final(struct crypto_pcomp *tfm,
@@ -328,15 +328,15 @@ static int zlib_decompress_final(struct crypto_pcomp *tfm,
                 return -EINVAL;
         }
 
+        ret = req->avail_out - stream->avail_out;
         pr_debug("avail_in %u, avail_out %u (consumed %u, produced %u)\n",
                  stream->avail_in, stream->avail_out,
-                 req->avail_in - stream->avail_in,
-                 req->avail_out - stream->avail_out);
+                 req->avail_in - stream->avail_in, ret);
         req->next_in = stream->next_in;
         req->avail_in = stream->avail_in;
         req->next_out = stream->next_out;
         req->avail_out = stream->avail_out;
-        return 0;
+        return ret;
 }