Hi,

On May 21 2018 20:58, Yisheng Xie wrote:
match_string() returns the index of an array for a matching string,
which can be used intead of open coded variant.

Cc: Clemens Ladisch <clem...@ladisch.de>
Cc: Jaroslav Kysela <pe...@perex.cz>
Cc: Takashi Iwai <ti...@suse.com>
Cc: alsa-de...@alsa-project.org
Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
  sound/firewire/oxfw/oxfw.c | 8 +-------
  1 file changed, 1 insertion(+), 7 deletions(-)

Reviewed-by: Takashi Sakamoto <o-taka...@sakamocchi.jp>

For my information, use_match_string() helper was firstly introduced to
v4.6 kernel by a commit 56b060814e2d ('lib/string: introduce match_string() helper').

diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index 413ab63..1e5b2c8 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -49,7 +49,6 @@ static bool detect_loud_models(struct fw_unit *unit)
                "Tapco LINK.firewire 4x6",
                "U.420"};
        char model[32];
-       unsigned int i;
        int err;
err = fw_csr_string(unit->directory, CSR_MODEL,
@@ -57,12 +56,7 @@ static bool detect_loud_models(struct fw_unit *unit)
        if (err < 0)
                return false;
- for (i = 0; i < ARRAY_SIZE(models); i++) {
-               if (strcmp(models[i], model) == 0)
-                       break;
-       }
-
-       return (i < ARRAY_SIZE(models));
+       return match_string(models, ARRAY_SIZE(models), model) >= 0;
  }
static int name_card(struct snd_oxfw *oxfw)

Thanks

Takashi Sakamoto

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