eCryptfs: release mutex on hash error path

[linux-2.6-omap-h63xx.git] / fs / ecryptfs / crypto.c

diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index 9ea4769fbb668bee43ef8caf27894ae4ebdf55c7..bbed2fd40fdcd59d125e269afde868880c495724 100644 (file)
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -115,11 +115,29 @@ static int ecryptfs_calculate_md5(char *dst,
                }
                crypt_stat->hash_tfm = desc.tfm;
        }
-       crypto_hash_init(&desc);
-       crypto_hash_update(&desc, &sg, len);
-       crypto_hash_final(&desc, dst);
-       mutex_unlock(&crypt_stat->cs_hash_tfm_mutex);
+       rc = crypto_hash_init(&desc);
+       if (rc) {
+               printk(KERN_ERR
+                      "%s: Error initializing crypto hash; rc = [%d]\n",
+                      __FUNCTION__, rc);
+               goto out;
+       }
+       rc = crypto_hash_update(&desc, &sg, len);
+       if (rc) {
+               printk(KERN_ERR
+                      "%s: Error updating crypto hash; rc = [%d]\n",
+                      __FUNCTION__, rc);
+               goto out;
+       }
+       rc = crypto_hash_final(&desc, dst);
+       if (rc) {
+               printk(KERN_ERR
+                      "%s: Error finalizing crypto hash; rc = [%d]\n",
+                      __FUNCTION__, rc);
+               goto out;
+       }
 out:
+       mutex_unlock(&crypt_stat->cs_hash_tfm_mutex);
        return rc;
 }