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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: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
hifive-unleashed-5.1
Clemens Ladisch 2007-08-21 08:56:54 +02:00 committed by Jaroslav Kysela
parent a6a712aeb1
commit 076639f6ac
1 changed files with 9 additions and 2 deletions
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11
sound/usb/usbaudio.c
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@ -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);