iwlwifi: mvm: use match_string() helper

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

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
index de40752..3b6b3d8 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
@@ -666,16 +666,11 @@ iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf,
        };
        int ret, bt_force_ant_mode;
 
-       for (bt_force_ant_mode = 0;
-            bt_force_ant_mode < ARRAY_SIZE(modes_str);
-            bt_force_ant_mode++) {
-               if (!strcmp(buf, modes_str[bt_force_ant_mode]))
-                       break;
-       }
-
-       if (bt_force_ant_mode >= ARRAY_SIZE(modes_str))
-               return -EINVAL;
+       ret = match_string(modes_str, ARRAY_SIZE(modes_str), buf);
+       if (ret < 0)
+               return ret;
 
+       bt_force_ant_mode = ret;
        ret = 0;
        mutex_lock(&mvm->mutex);
        if (mvm->bt_force_ant_mode == bt_force_ant_mode)