From: Dmitry Kunilov <[email protected]>

ZTE AC2726 EVDO modem drops ppp connection every minute when driven by
zte_ev but works fine when driven by option. Move the support for AC2726
back to option driver.

Signed-off-by: Dmitry Kunilov <[email protected]>
---

diff -rupN linux-3.12.2.orig/drivers/usb/serial/option.c 
linux-3.12.2/drivers/usb/serial/option.c
--- linux-3.12.2.orig/drivers/usb/serial/option.c       2013-12-02 
05:13:31.000000000 -0800
+++ linux-3.12.2/drivers/usb/serial/option.c    2013-12-03 11:31:50.000000000 
-0800
@@ -250,6 +250,7 @@ static void option_instat_callback(struc
 #define ZTE_PRODUCT_MF628                      0x0015
 #define ZTE_PRODUCT_MF626                      0x0031
 #define ZTE_PRODUCT_MC2718                     0xffe8
+#define ZTE_PRODUCT_AC2726                     0xfff1
 
 #define BENQ_VENDOR_ID                         0x04a5
 #define BENQ_PRODUCT_H10                       0x4068
@@ -1426,6 +1427,7 @@ static const struct usb_device_id option
        { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x01) },
        { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x02, 0x05) },
        { USB_VENDOR_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff, 0x86, 0x10) },
+       { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 
0xff, 0xff, 0xff) },
 
        { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_H10) },
        { USB_DEVICE(DLINK_VENDOR_ID, DLINK_PRODUCT_DWM_652) },
diff -rupN linux-3.12.2.orig/drivers/usb/serial/zte_ev.c 
linux-3.12.2/drivers/usb/serial/zte_ev.c
--- linux-3.12.2.orig/drivers/usb/serial/zte_ev.c       2013-12-02 
05:13:31.000000000 -0800
+++ linux-3.12.2/drivers/usb/serial/zte_ev.c    2013-12-03 11:32:48.187279171 
-0800
@@ -281,8 +281,7 @@ static const struct usb_device_id id_tab
        { USB_DEVICE(0x19d2, 0xfffd) },
        { USB_DEVICE(0x19d2, 0xfffc) },
        { USB_DEVICE(0x19d2, 0xfffb) },
-       /* AC2726, AC8710_V3 */
-       { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfff1, 0xff, 0xff, 0xff) },
+       /* AC8710_V3 */
        { USB_DEVICE(0x19d2, 0xfff6) },
        { USB_DEVICE(0x19d2, 0xfff7) },
        { USB_DEVICE(0x19d2, 0xfff8) },
--
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