[alsa-devel] [PATCH v2 8/9] ALSA: line6: Cleanup initialization

[Andrej Krutak]

Only determine control port properties if the devices needs it.
Only initialize PCM for POD HD devices that support it.
No POD HD seems to support MIDI, thus drop the initialization.

Signed-off-by: Andrej Krutak <dev at andree.sk>
---
 sound/usb/line6/driver.c |  3 +--
 sound/usb/line6/podhd.c  | 19 ++++++++-----------
 2 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c
index 853a143..8a71d45 100644
--- a/sound/usb/line6/driver.c
+++ b/sound/usb/line6/driver.c
@@ -612,9 +612,8 @@ int line6_probe(struct usb_interface *interface,
 		goto error;
 	}
 
-	line6_get_interval(line6);
-
 	if (properties->capabilities & LINE6_CAP_CONTROL) {
+		line6_get_interval(line6);
 		ret = line6_init_cap_control(line6);
 		if (ret < 0)
 			goto error;
diff --git a/sound/usb/line6/podhd.c b/sound/usb/line6/podhd.c
index 8246ea5..193eb29 100644
--- a/sound/usb/line6/podhd.c
+++ b/sound/usb/line6/podhd.c
@@ -314,17 +314,14 @@ static int podhd_init(struct usb_line6 *line6,
 			return err;
 	}
 
-	/* initialize MIDI subsystem: */
-	err = line6_init_midi(line6);
-	if (err < 0)
-		return err;
-
-	/* initialize PCM subsystem: */
-	err = line6_init_pcm(line6,
-		(id->driver_info == LINE6_PODX3) ? &podx3_pcm_properties :
-		&podhd_pcm_properties);
-	if (err < 0)
-		return err;
+	if (pod->line6.properties->capabilities & LINE6_CAP_PCM) {
+		/* initialize PCM subsystem: */
+		err = line6_init_pcm(line6,
+			(id->driver_info == LINE6_PODX3) ? &podx3_pcm_properties :
+			&podhd_pcm_properties);
+		if (err < 0)
+			return err;
+	}
 
 	if (!(pod->line6.properties->capabilities & LINE6_CAP_CONTROL)) {
 		/* register USB audio system directly */
-- 
1.9.1