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Commit 076639f6 authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
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[ALSA] usb-audio: allow low speed MIDI devices 



Allow low speed MIDI devices because newer devices from ESI do not
support full speed.

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent a6a712ae

sound/usb/usbaudio.c

+9 −2
Original line number Diff line number Diff line
@@ -2840,6 +2840,10 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) 
			/* skip non-supported classes */

			continue;

		}

		if (snd_usb_get_speed(dev) == USB_SPEED_LOW) {

			snd_printk(KERN_ERR "low speed audio streaming not supported\n");

			continue;

		}

		if (! parse_audio_endpoints(chip, j)) {

			usb_set_interface(dev, j, 0); /* reset the current interface */

			usb_driver_claim_interface(&usb_audio_driver, iface, (void *)-1L);
@@ -3382,7 +3386,8 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx, 


	*rchip = NULL;



	if (snd_usb_get_speed(dev) != USB_SPEED_FULL &&

	if (snd_usb_get_speed(dev) != USB_SPEED_LOW &&

	    snd_usb_get_speed(dev) != USB_SPEED_FULL &&

	    snd_usb_get_speed(dev) != USB_SPEED_HIGH) {

		snd_printk(KERN_ERR "unknown device speed %d\n", snd_usb_get_speed(dev));

		return -ENXIO;
@@ -3456,7 +3461,9 @@ static int snd_usb_audio_create(struct usb_device *dev, int idx, 
		usb_make_path(dev, card->longname + len, sizeof(card->longname) - len);



	strlcat(card->longname,

		snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" : ", high speed",

		snd_usb_get_speed(dev) == USB_SPEED_LOW ? ", low speed" :

		snd_usb_get_speed(dev) == USB_SPEED_FULL ? ", full speed" :

		", high speed",

		sizeof(card->longname));



	snd_usb_audio_create_proc(chip);