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authorH. Peter Anvin <hpa@zytor.com>2009-06-02 00:13:02 +0200
committerH. Peter Anvin <hpa@zytor.com>2009-06-02 00:25:31 +0200
commit48b1fddbb100a64f3983ca9768b8ea629a09aa20 (patch)
tree7cf552c623cb0aa0dd945df55b7eaf5a0697e277 /sound/usb/usbmidi.c
parentx86, mce: drop "extern" from function prototypes in asm/mce.h (diff)
parentMerge branch 'x86/cpufeature' into irq/numa (diff)
downloadlinux-48b1fddbb100a64f3983ca9768b8ea629a09aa20.tar.xz
linux-48b1fddbb100a64f3983ca9768b8ea629a09aa20.zip
Merge branch 'irq/numa' into x86/mce3
Merge reason: arch/x86/kernel/irqinit_{32,64}.c unified in irq/numa and modified in x86/mce3; this merge resolves the conflict. Conflicts: arch/x86/kernel/irqinit.c Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'sound/usb/usbmidi.c')
-rw-r--r--sound/usb/usbmidi.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index 26bad373fe65..2fb35cc22a30 100644
--- a/sound/usb/usbmidi.c
+++ b/sound/usb/usbmidi.c
@@ -1778,8 +1778,18 @@ int snd_usb_create_midi_interface(struct snd_usb_audio* chip,
umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
break;
- case QUIRK_MIDI_RAW:
+ case QUIRK_MIDI_FASTLANE:
umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
+ /*
+ * Interface 1 contains isochronous endpoints, but with the same
+ * numbers as in interface 0. Since it is interface 1 that the
+ * USB core has most recently seen, these descriptors are now
+ * associated with the endpoint numbers. This will foul up our
+ * attempts to submit bulk/interrupt URBs to the endpoints in
+ * interface 0, so we have to make sure that the USB core looks
+ * again at interface 0 by calling usb_set_interface() on it.
+ */
+ usb_set_interface(umidi->chip->dev, 0, 0);
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
break;
case QUIRK_MIDI_EMAGIC: