Patch "USB: cdc-acm: fix TIOCMIWAIT" has been added to the 4.8-stable tree

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

USB: cdc-acm: fix TIOCMIWAIT

to the 4.8-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:
usb-cdc-acm-fix-tiocmiwait.patch
and it can be found in the queue-4.8 subdirectory.

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

From: Johan Hovold <[email protected]>
Date: Tue, 8 Nov 2016 13:10:57 +0100
Subject: USB: cdc-acm: fix TIOCMIWAIT

From: Johan Hovold <[email protected]>

commit 18266403f3fe507f0246faa1d5432333a2f139ca upstream.

The TIOCMIWAIT implementation would return -EINVAL if any of the three supported signals were included in the mask.

Instead of returning an error in case TIOCM_CTS is included, simply drop the mask check completely, which is in accordance with how other drivers implement this ioctl.

---
 drivers/usb/class/cdc-acm.c |    2 --
 1 file changed, 2 deletions(-)

@@ -946,8 +946,6 @@ static int wait_serial_change(struct acm
 	DECLARE_WAITQUEUE(wait, current);
 	struct async_icount old, new;
 
-	if (arg & (TIOCM_DSR | TIOCM_RI | TIOCM_CD))
-		return -EINVAL;
 	do {
 		spin_lock_irq(&acm->read_lock);
 		old = acm->oldcount;

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

queue-4.8/usb-cdc-acm-fix-tiocmiwait.patch