match_string() returns the index of an array for a matching string,
which can be used intead of open coded variant.

Cc: Mimi Zohar <zo...@linux.vnet.ibm.com>
Cc: Dmitry Kasatkin <dmitry.kasat...@gmail.com>
Cc: James Morris <jmor...@namei.org>
Cc: "Serge E. Hallyn" <se...@hallyn.com>
Cc: linux-integr...@vger.kernel.org
Cc: linux-security-mod...@vger.kernel.org
Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
 security/integrity/ima/ima_main.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/security/integrity/ima/ima_main.c 
b/security/integrity/ima/ima_main.c
index 74d0bd7..f807093 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -61,14 +61,11 @@ static int __init hash_setup(char *str)
                goto out;
        }
 
-       for (i = 0; i < HASH_ALGO__LAST; i++) {
-               if (strcmp(str, hash_algo_name[i]) == 0) {
-                       ima_hash_algo = i;
-                       break;
-               }
-       }
-       if (i == HASH_ALGO__LAST)
+       i = match_string(hash_algo_name, HASH_ALGO__LAST, str);
+       if (i < 0)
                return 1;
+
+       ima_hash_algo = i;
 out:
        hash_setup_done = 1;
        return 1;
-- 
1.7.12.4

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