[PATCH v2 3/5] USB: gadget: f_midi: setup SuperSpeed Plus descriptors

From: Greg Kroah-Hartman
Date: Fri Nov 27 2020 - 09:06:23 EST


From: Will McVicker <willmcvicker@xxxxxxxxxx>

Needed for SuperSpeed Plus support for f_midi. This allows the
gadget to work properly without crashing at SuperSpeed rates.

Cc: Felipe Balbi <balbi@xxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Will McVicker <willmcvicker@xxxxxxxxxx>
Reviewed-by: Peter Chen <peter.chen@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/gadget/function/f_midi.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index 85cb15734aa8..974a2d931c3b 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -1048,6 +1048,12 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
f->ss_descriptors = usb_copy_descriptors(midi_function);
if (!f->ss_descriptors)
goto fail_f_midi;
+
+ if (gadget_is_superspeed_plus(c->cdev->gadget)) {
+ f->ssp_descriptors = usb_copy_descriptors(midi_function);
+ if (!f->ssp_descriptors)
+ goto fail_f_midi;
+ }
}

kfree(midi_function);
--
2.29.2