This is a note to let you know that I've just added the patch titled
USB: serial: quatech2: fix control-request directions
to the 4.19-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-serial-quatech2-fix-control-request-directions.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From eb8dbe80326c3d44c1e38ee4f40e0d8d3e06f2d0 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Mon, 24 May 2021 11:17:05 +0200
Subject: USB: serial: quatech2: fix control-request directions
From: Johan Hovold <johan@xxxxxxxxxx>
commit eb8dbe80326c3d44c1e38ee4f40e0d8d3e06f2d0 upstream.
The direction of the pipe argument must match the request-type direction
bit or control requests may fail depending on the host-controller-driver
implementation.
Fix the three requests which erroneously used usb_rcvctrlpipe().
Fixes: f7a33e608d9a ("USB: serial: add quatech2 usb to serial driver")
Cc: stable@xxxxxxxxxxxxxxx # 3.5
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/serial/quatech2.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -416,7 +416,7 @@ static void qt2_close(struct usb_serial_
/* flush the port transmit buffer */
i = usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
+ usb_sndctrlpipe(serial->dev, 0),
QT2_FLUSH_DEVICE, 0x40, 1,
port_priv->device_port, NULL, 0, QT2_USB_TIMEOUT);
@@ -426,7 +426,7 @@ static void qt2_close(struct usb_serial_
/* flush the port receive buffer */
i = usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
+ usb_sndctrlpipe(serial->dev, 0),
QT2_FLUSH_DEVICE, 0x40, 0,
port_priv->device_port, NULL, 0, QT2_USB_TIMEOUT);
@@ -693,7 +693,7 @@ static int qt2_attach(struct usb_serial
int status;
/* power on unit */
- status = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ status = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
0xc2, 0x40, 0x8000, 0, NULL, 0,
QT2_USB_TIMEOUT);
if (status < 0) {
Patches currently in stable-queue which might be from johan@xxxxxxxxxx are
queue-4.19/usb-serial-quatech2-fix-control-request-directions.patch
queue-4.19/usb-serial-ftdi_sio-add-novatech-orionmx-product-id.patch
queue-4.19/usb-serial-omninet-add-device-id-for-zyxel-omni-56k-plus.patch
queue-4.19/usb-serial-cp210x-fix-alternate-function-for-cp2102n-qfn20.patch
