patch "USB: serial: ark3116: fix register-accessor error handling" added to usb-testing

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

USB: serial: ark3116: fix register-accessor error handling

to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-testing branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open.

If you have any questions about this process, please let me know.

From: Johan Hovold <[email protected]>
Date: Thu, 12 Jan 2017 14:56:09 +0100
Subject: USB: serial: ark3116: fix register-accessor error handling

The current implementation failed to detect short transfers, something which could lead to bits of the uninitialised heap transfer buffer leaking to user space.

new ark3116 driver.")

and add close and release functions.")

---
 drivers/usb/serial/ark3116.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

index 1532cde8a437..7812052dc700 100644
@@ -99,10 +99,17 @@ static int ark3116_read_reg(struct usb_serial *serial,
 				 usb_rcvctrlpipe(serial->dev, 0),
 				 0xfe, 0xc0, 0, reg,
 				 buf, 1, ARK_TIMEOUT);
-	if (result < 0)
+	if (result < 1) {
+		dev_err(&serial->interface->dev,
+				"failed to read register %u: %d\n",
+				reg, result);
+		if (result >= 0)
+			result = -EIO;
+
 		return result;
-	else
-		return buf[0];
+	}
+
+	return buf[0];
 }
 
 static inline int calc_divisor(int bps)

2.11.1