USB: serial: ch341: fix resume after reset
Fix reset-resume handling which failed to resubmit the read and interrupt URBs, thereby leaving a port that was open before suspend in a broken state until closed and reopened. Fixes:1ded7ea47b
("USB: ch341 serial: fix port number changed after resume") Fixes:2bfd1c96a9
("USB: serial: ch341: remove reset_resume callback") Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
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@ -582,14 +582,23 @@ static int ch341_tiocmget(struct tty_struct *tty)
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static int ch341_reset_resume(struct usb_serial *serial)
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{
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struct ch341_private *priv;
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priv = usb_get_serial_port_data(serial->port[0]);
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struct usb_serial_port *port = serial->port[0];
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struct ch341_private *priv = usb_get_serial_port_data(port);
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int ret;
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/* reconfigure ch341 serial port after bus-reset */
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ch341_configure(serial->dev, priv);
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return 0;
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if (tty_port_initialized(&port->port)) {
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ret = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
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if (ret) {
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dev_err(&port->dev, "failed to submit interrupt urb: %d\n",
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ret);
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return ret;
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}
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}
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return usb_serial_generic_resume(serial);
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}
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static struct usb_serial_driver ch341_device = {
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