[PATCH 5.10 08/40] USB: gadget: f_midi: setup SuperSpeed Plus descriptors

Greg Kroah-Hartman
2020-12-23T15:36:19Z

From: Will McVicker <willmcvicker@google.com>

commit 457a902ba1a73b7720666b21ca038cd19764db18 upstream.

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

Cc: Felipe Balbi <balbi@kernel.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Will McVicker <willmcvicker@google.com>
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Link: https://lore.kernel.org/r/20201127140559.381351-4-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/usb/gadget/function/f_midi.c | 6 ++++++
1 file changed, 6 insertions(+)

--- 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_config
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);