Patch "ACM gadget: fix endianness in notifications" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

ACM gadget: fix endianness in notifications

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
acm-gadget-fix-endianness-in-notifications.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Oliver Neukum <[email protected]>
Date: Tue, 14 Mar 2017 12:09:56 +0100
Subject: ACM gadget: fix endianness in notifications
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From: Oliver Neukum <[email protected]>

commit cdd7928df0d2efaa3270d711963773a08a4cc8ab upstream.

The gadget code exports the bitfield for serial status changes over the wire in its internal endianness. The fix is to convert to little endian before sending it over the wire.

---
 drivers/usb/gadget/function/f_acm.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

@@ -535,13 +535,15 @@ static int acm_notify_serial_state(struc
 {
 	struct usb_composite_dev *cdev = acm->port.func.config->cdev;
 	int			status;
+	__le16			serial_state;
 
 	spin_lock(&acm->lock);
 	if (acm->notify_req) {
 		dev_dbg(&cdev->gadget->dev, "acm ttyGS%d serial state %04x\n",
 			acm->port_num, acm->serial_state);
+		serial_state = cpu_to_le16(acm->serial_state);
 		status = acm_cdc_notify(acm, USB_CDC_NOTIFY_SERIAL_STATE,
-				0, &acm->serial_state, sizeof(acm->serial_state));
+				0, &serial_state, sizeof(acm->serial_state));
 	} else {
 		acm->pending = true;
 		status = 0;

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/acm-gadget-fix-endianness-in-notifications.patch