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Diffstat (limited to 'sound/usb/stream.c')
-rw-r--r--sound/usb/stream.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/sound/usb/stream.c b/sound/usb/stream.c
index 7db2f8958e79..c4339f97226b 100644
--- a/sound/usb/stream.c
+++ b/sound/usb/stream.c
@@ -493,10 +493,10 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
altsd = get_iface_desc(alts);
protocol = altsd->bInterfaceProtocol;
/* skip invalid one */
- if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
+ if (((altsd->bInterfaceClass != USB_CLASS_AUDIO ||
+ (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING &&
+ altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC)) &&
altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
- (altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING &&
- altsd->bInterfaceSubClass != USB_SUBCLASS_VENDOR_SPEC) ||
altsd->bNumEndpoints < 1 ||
le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize) == 0)
continue;
@@ -512,6 +512,15 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
if (snd_usb_apply_interface_quirk(chip, iface_no, altno))
continue;
+ /*
+ * Roland audio streaming interfaces are marked with protocols
+ * 0/1/2, but are UAC 1 compatible.
+ */
+ if (USB_ID_VENDOR(chip->usb_id) == 0x0582 &&
+ altsd->bInterfaceClass == USB_CLASS_VENDOR_SPEC &&
+ protocol <= 2)
+ protocol = UAC_VERSION_1;
+
chconfig = 0;
/* get audio formats */
switch (protocol) {
@@ -635,6 +644,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;
fp->ep_attr = get_endpoint(alts, 0)->bmAttributes;
fp->datainterval = snd_usb_parse_datainterval(chip, alts);
+ fp->protocol = protocol;
fp->maxpacksize = le16_to_cpu(get_endpoint(alts, 0)->wMaxPacketSize);
fp->channels = num_channels;
if (snd_usb_get_speed(dev) == USB_SPEED_HIGH)
@@ -676,7 +686,7 @@ int snd_usb_parse_audio_interface(struct snd_usb_audio *chip, int iface_no)
}
/* ok, let's parse further... */
- if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream, alts) < 0) {
+ if (snd_usb_parse_audio_format(chip, fp, format, fmt, stream) < 0) {
kfree(fp->rate_table);
kfree(fp->chmap);
kfree(fp);