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

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Message-Id: <20201127140559.381351-4-gregkh@linuxfoundation.org>
Date:   Fri, 27 Nov 2020 15:05:57 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     balbi@...nel.org
Cc:     peter.chen@....com, willmcvicker@...gle.com,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable <stable@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH v2 3/5] USB: gadget: f_midi: setup SuperSpeed Plus descriptors

From: Will McVicker <willmcvicker@...gle.com>

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

Cc: Felipe Balbi <balbi@...nel.org>
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Will McVicker <willmcvicker@...gle.com>
Reviewed-by: Peter Chen <peter.chen@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 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