Revert "USB: option,zte_ev: move most ZTE CDMA devices to zte_ev"

This reverts commit 73228a0538a7 ("USB: option,zte_ev: move most ZTE
CDMA devices to zte_ev").

Move the IDs of the devices that were previously driven by the option
driver back to that driver.

As several users have reported, the zte_ev driver is causing random
disconnects as well as reconnect failures.

A closer analysis of the zte_ev setup code reveals that it consists of
standard CDC requests (SET/GET_LINE_CODING and SET_CONTROL_LINE_STATE)
but unfortunately fails to get some of those right. In particular, as
reported by Liu Lei, it fails to lower DTR/RTS on close. It also appears
that the control requests lack the interface argument.

Note that the zte_ev driver is based on code (once) distributed by ZTE
that still appears to originally have been reverse-engineered and bolted
onto the generic driver.

Since line control is already handled properly by the option driver, and
the SET/GET_LINE_CODING requests appears to be redundant (amounts to a
SET 9600 8N1), this is a first step in ultimately removing the redundant
zte_ev driver.

Note that AC2726 had already been moved back to option, and that some
IDs were in the device table of both drivers prior to the commit being
reverted.

Reported-by: Lei Liu <liu.lei78@zte.com.cn>
Cc: <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 408aad1..54a8120 100644 (file)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -275,8 +275,12 @@ static void option_instat_callback(struct urb *urb);
 #define ZTE_PRODUCT_MF622                      0x0001
 #define ZTE_PRODUCT_MF628                      0x0015
 #define ZTE_PRODUCT_MF626                      0x0031
-#define ZTE_PRODUCT_MC2718                     0xffe8
 #define ZTE_PRODUCT_AC2726                     0xfff1
+#define ZTE_PRODUCT_CDMA_TECH                  0xfffe
+#define ZTE_PRODUCT_AC8710T                    0xffff
+#define ZTE_PRODUCT_MC2718                     0xffe8
+#define ZTE_PRODUCT_AD3812                     0xffeb
+#define ZTE_PRODUCT_MC2716                     0xffed
 
 #define BENQ_VENDOR_ID                         0x04a5
 #define BENQ_PRODUCT_H10                       0x4068
@@ -531,10 +535,18 @@ static const struct option_blacklist_info zte_k3765_z_blacklist = {
        .reserved = BIT(4),
 };
 
+static const struct option_blacklist_info zte_ad3812_z_blacklist = {
+       .sendsetup = BIT(0) | BIT(1) | BIT(2),
+};
+
 static const struct option_blacklist_info zte_mc2718_z_blacklist = {
        .sendsetup = BIT(1) | BIT(2) | BIT(3) | BIT(4),
 };
 
+static const struct option_blacklist_info zte_mc2716_z_blacklist = {
+       .sendsetup = BIT(1) | BIT(2) | BIT(3),
+};
+
 static const struct option_blacklist_info huawei_cdc12_blacklist = {
        .reserved = BIT(1) | BIT(2),
 };
@@ -1074,6 +1086,7 @@ static const struct usb_device_id option_ids[] = {
        { USB_DEVICE_INTERFACE_CLASS(BANDRICH_VENDOR_ID, BANDRICH_PRODUCT_1012, 0xff) },
        { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC650) },
        { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_PRODUCT_KPC680) },
+       { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6000)}, /* ZTE AC8700 */
        { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x6613)}, /* Onda H600/ZTE MF330 */
        { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x0023)}, /* ONYX 3G device */
        { USB_DEVICE(QUALCOMM_VENDOR_ID, 0x9000)}, /* SIMCom SIM5218 */
@@ -1548,13 +1561,18 @@ static const struct usb_device_id option_ids[] = {
        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff93, 0xff, 0xff, 0xff) },
        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0xff94, 0xff, 0xff, 0xff) },
 
-       /* NOTE: most ZTE CDMA devices should be driven by zte_ev, not option */
+       { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_CDMA_TECH, 0xff, 0xff, 0xff) },
+       { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC2726, 0xff, 0xff, 0xff) },
+       { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AC8710T, 0xff, 0xff, 0xff) },
        { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2718, 0xff, 0xff, 0xff),
         .driver_info = (kernel_ulong_t)&zte_mc2718_z_blacklist },
+       { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_AD3812, 0xff, 0xff, 0xff),
+        .driver_info = (kernel_ulong_t)&zte_ad3812_z_blacklist },
+       { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, ZTE_PRODUCT_MC2716, 0xff, 0xff, 0xff),
+        .driver_info = (kernel_ulong_t)&zte_mc2716_z_blacklist },
        { 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 --git a/drivers/usb/serial/zte_ev.c b/drivers/usb/serial/zte_ev.c
index e40ab73..4ecff9c 100644 (file)
--- a/drivers/usb/serial/zte_ev.c
+++ b/drivers/usb/serial/zte_ev.c
@@ -272,27 +272,9 @@ static void zte_ev_usb_serial_close(struct usb_serial_port *port)
 }
 
 static const struct usb_device_id id_table[] = {
-       /* AC8710, AC8710T */
-       { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffff, 0xff, 0xff, 0xff) },
-        /* AC8700 */
-       { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xfffe, 0xff, 0xff, 0xff) },
        /* MG880 */
        { USB_DEVICE(0x19d2, 0xfffd) },
-       { USB_DEVICE(0x19d2, 0xfffc) },
-       { USB_DEVICE(0x19d2, 0xfffb) },
-       /* AC8710_V3 */
-       { USB_DEVICE(0x19d2, 0xfff6) },
-       { USB_DEVICE(0x19d2, 0xfff7) },
-       { USB_DEVICE(0x19d2, 0xfff8) },
-       { USB_DEVICE(0x19d2, 0xfff9) },
-       { USB_DEVICE(0x19d2, 0xffee) },
-       /* AC2716, MC2716 */
-       { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffed, 0xff, 0xff, 0xff) },
-       /* AD3812 */
-       { USB_DEVICE_AND_INTERFACE_INFO(0x19d2, 0xffeb, 0xff, 0xff, 0xff) },
-       { USB_DEVICE(0x19d2, 0xffec) },
        { USB_DEVICE(0x05C6, 0x3197) },
-       { USB_DEVICE(0x05C6, 0x6000) },
        { USB_DEVICE(0x05C6, 0x9008) },
        { },
 };