[PATCH v1] catpt: Switch to use list_entry_is_head() helper

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

Since we got list_entry_is_head() helper in the generic header,
we may switch catpt to use it. It removes the need in additional variable.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 sound/soc/intel/catpt/pcm.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/sound/soc/intel/catpt/pcm.c b/sound/soc/intel/catpt/pcm.c
index e5d54bb1c42a..1c7260db3238 100644
--- a/sound/soc/intel/catpt/pcm.c
+++ b/sound/soc/intel/catpt/pcm.c
@@ -331,10 +331,10 @@ static int catpt_dai_apply_usettings(struct snd_soc_dai *dai,
 {
 	struct catpt_dev *cdev = dev_get_drvdata(dai->dev);
 	struct snd_soc_component *component = dai->component;
-	struct snd_kcontrol *pos, *kctl = NULL;
 	const char *name;
 	int ret;
 	u32 id = stream->info.stream_hw_id;
+	struct snd_kcontrol *pos;
 
 	/* only selected streams have individual controls */
 	switch (id) {
@@ -356,17 +356,15 @@ static int catpt_dai_apply_usettings(struct snd_soc_dai *dai,
 
 	list_for_each_entry(pos, &component->card->snd_card->controls, list) {
 		if (pos->private_data == component &&
-		    !strncmp(name, pos->id.name, sizeof(pos->id.name))) {
-			kctl = pos;
+		    !strncmp(name, pos->id.name, sizeof(pos->id.name)))
 			break;
-		}
 	}
-	if (!kctl)
+	if (list_entry_is_head(pos, &component->card->snd_card->controls, list))
 		return -ENOENT;
 
 	if (stream->template->type != CATPT_STRM_TYPE_LOOPBACK)
-		return catpt_set_dspvol(cdev, id, (long *)kctl->private_value);
-	ret = catpt_ipc_mute_loopback(cdev, id, *(bool *)kctl->private_value);
+		return catpt_set_dspvol(cdev, id, (long *)pos->private_value);
+	ret = catpt_ipc_mute_loopback(cdev, id, *(bool *)pos->private_value);
 	if (ret)
 		return CATPT_IPC_ERROR(ret);
 	return 0;
-- 
2.29.2