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

Cc: Bartlomiej Zolnierkiewicz <b.zolnier...@samsung.com>
Cc: Tejun Heo <t...@kernel.org>
Cc: linux-...@vger.kernel.org
Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
 drivers/ata/pata_hpt37x.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index 3ba843f..ef8aaeb 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -224,17 +224,14 @@ static int hpt_dma_blacklisted(const struct ata_device 
*dev, char *modestr,
                               const char * const list[])
 {
        unsigned char model_num[ATA_ID_PROD_LEN + 1];
-       int i = 0;
+       int i;
 
        ata_id_c_string(dev->id, model_num, ATA_ID_PROD, sizeof(model_num));
 
-       while (list[i] != NULL) {
-               if (!strcmp(list[i], model_num)) {
-                       pr_warn("%s is not supported for %s\n",
-                               modestr, list[i]);
-                       return 1;
-               }
-               i++;
+       i = match_string(list, -1, model_num);
+       if (i >= 0) {
+               pr_warn("%s is not supported for %s\n", modestr, list[i]);
+               return 1;
        }
        return 0;
 }
-- 
1.7.12.4

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