2 files changed, 26 insertions, 8 deletions

diff --git a/drivers/usb/serial/metro-usb.c b/drivers/usb/serial/metro-usb.c
index 81423f7361db..d47eb06fe463 100644
--- a/drivers/usb/serial/metro-usb.c
+++ b/drivers/usb/serial/metro-usb.c
@@ -222,14 +222,6 @@ static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port)
         metro_priv->throttled = 0;
         spin_unlock_irqrestore(&metro_priv->lock, flags);
 
-        /*
-         * Force low_latency on so that our tty_push actually forces the data
-         * through, otherwise it is scheduled, and with high data rates (like
-         * with OHCI) data can get lost.
-         */
-        if (tty)
-                tty->low_latency = 1;
-
         /* Clear the urb pipe. */
         usb_clear_halt(serial->dev, port->interrupt_in_urb->pipe);
 
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index adf8ce72be50..417ab1b0aa30 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -497,6 +497,15 @@ static void option_instat_callback(struct urb *urb);
 
 /* MediaTek products */
 #define MEDIATEK_VENDOR_ID                      0x0e8d
+#define MEDIATEK_PRODUCT_DC_1COM                0x00a0
+#define MEDIATEK_PRODUCT_DC_4COM                0x00a5
+#define MEDIATEK_PRODUCT_DC_5COM                0x00a4
+#define MEDIATEK_PRODUCT_7208_1COM              0x7101
+#define MEDIATEK_PRODUCT_7208_2COM              0x7102
+#define MEDIATEK_PRODUCT_FP_1COM                0x0003
+#define MEDIATEK_PRODUCT_FP_2COM                0x0023
+#define MEDIATEK_PRODUCT_FPDC_1COM              0x0043
+#define MEDIATEK_PRODUCT_FPDC_2COM              0x0033
 
 /* Cellient products */
 #define CELLIENT_VENDOR_ID                      0x2692
@@ -554,6 +563,10 @@ static const struct option_blacklist_info net_intf1_blacklist = {
         .reserved = BIT(1),
 };
 
+static const struct option_blacklist_info net_intf2_blacklist = {
+        .reserved = BIT(2),
+};
+
 static const struct option_blacklist_info net_intf3_blacklist = {
         .reserved = BIT(3),
 };
@@ -1099,6 +1112,8 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1298, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1299, 0xff, 0xff, 0xff) },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1300, 0xff, 0xff, 0xff) },
+        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x1402, 0xff, 0xff, 0xff),
+                .driver_info = (kernel_ulong_t)&net_intf2_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2002, 0xff,
           0xff, 0xff), .driver_info = (kernel_ulong_t)&zte_k3765_z_blacklist },
         { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x2003, 0xff, 0xff, 0xff) },
@@ -1240,6 +1255,17 @@ static const struct usb_device_id option_ids[] = {
         { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, 0x00a1, 0xff, 0x02, 0x01) },
         { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, 0x00a2, 0xff, 0x00, 0x00) },
         { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, 0x00a2, 0xff, 0x02, 0x01) },        /* MediaTek MT6276M modem & app port */
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_1COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_5COM, 0xff, 0x02, 0x01) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_5COM, 0xff, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_4COM, 0xff, 0x02, 0x01) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_DC_4COM, 0xff, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_7208_1COM, 0x02, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_7208_2COM, 0x02, 0x02, 0x01) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FP_1COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FP_2COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FPDC_1COM, 0x0a, 0x00, 0x00) },
+        { USB_DEVICE_AND_INTERFACE_INFO(MEDIATEK_VENDOR_ID, MEDIATEK_PRODUCT_FPDC_2COM, 0x0a, 0x00, 0x00) },
         { USB_DEVICE(CELLIENT_VENDOR_ID, CELLIENT_PRODUCT_MEN200) },
         { } /* Terminating entry */
 };