Merge tag 'usb-serial-5.11-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for 5.11-rc3

Here's a fix for a DMA-from-stack issue in iuu_phoenix and a couple of
new modem device ids.

All have been in linux-next with no reported issues.

* tag 'usb-serial-5.11-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
  USB: serial: iuu_phoenix: fix DMA from stack
  USB: serial: option: add LongSung M5710 module support
  USB: serial: option: add Quectel EM160R-GL

Author: gregkh

drivers/usb/serial/iuu_phoenix.c

@@ -532,36 +532,46 @@ static int iuu_uart_flush(struct usb_serial_port *port)
 	struct device *dev = &port->dev;
 	int i;
 	int status;
-	u8 rxcmd = IUU_UART_RX;
+	u8 *rxcmd;
 	struct iuu_private *priv = usb_get_serial_port_data(port);
 
 	if (iuu_led(port, 0xF000, 0, 0, 0xFF) < 0)
 		return -EIO;
 
+	rxcmd = kmalloc(1, GFP_KERNEL);
+	if (!rxcmd)
+		return -ENOMEM;
+
+	rxcmd[0] = IUU_UART_RX;
+
 	for (i = 0; i < 2; i++) {
-		status = bulk_immediate(port, &rxcmd, 1);
+		status = bulk_immediate(port, rxcmd, 1);
 		if (status != IUU_OPERATION_OK) {
 			dev_dbg(dev, "%s - uart_flush_write error\n", __func__);
-			return status;
+			goto out_free;
 		}
 
 		status = read_immediate(port, &priv->len, 1);
 		if (status != IUU_OPERATION_OK) {
 			dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
-			return status;
+			goto out_free;
 		}
 
 		if (priv->len > 0) {
 			dev_dbg(dev, "%s - uart_flush datalen is : %i\n", __func__, priv->len);
 			status = read_immediate(port, priv->buf, priv->len);
 			if (status != IUU_OPERATION_OK) {
 				dev_dbg(dev, "%s - uart_flush_read error\n", __func__);
-				return status;
+				goto out_free;
 			}
 		}
 	}
 	dev_dbg(dev, "%s - uart_flush_read OK!\n", __func__);
 	iuu_led(port, 0, 0xF000, 0, 0xFF);
+
+out_free:
+	kfree(rxcmd);
+
 	return status;
 }
 

drivers/usb/serial/option.c

@@ -1117,6 +1117,8 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EM12, 0xff, 0xff, 0xff),
 	  .driver_info = RSVD(1) | RSVD(2) | RSVD(3) | RSVD(4) | NUMEP2 },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_EM12, 0xff, 0, 0) },
+	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, 0x0620, 0xff, 0xff, 0x30) },	/* EM160R-GL */
+	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, 0x0620, 0xff, 0, 0) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0xff, 0x30) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0, 0) },
 	{ USB_DEVICE_AND_INTERFACE_INFO(QUECTEL_VENDOR_ID, QUECTEL_PRODUCT_RM500Q, 0xff, 0xff, 0x10),
@@ -2057,6 +2059,7 @@ static const struct usb_device_id option_ids[] = {
 	{ USB_DEVICE_INTERFACE_CLASS(0x2cb7, 0x0105, 0xff),			/* Fibocom NL678 series */
 	  .driver_info = RSVD(6) },
 	{ USB_DEVICE_INTERFACE_CLASS(0x2cb7, 0x01a0, 0xff) },			/* Fibocom NL668-AM/NL652-EU (laptop MBIM) */
+	{ USB_DEVICE_INTERFACE_CLASS(0x2df3, 0x9d03, 0xff) },			/* LongSung M5710 */
 	{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1404, 0xff) },			/* GosunCn GM500 RNDIS */
 	{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1405, 0xff) },			/* GosunCn GM500 MBIM */
 	{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1406, 0xff) },			/* GosunCn GM500 ECM/NCM */