USB: serial: option.c: Add 4G W14 stick to blacklist for option_send_setup

The 4G XS Stick W14 seems to not understand RTS/DTR setting in
option_send_setup causing long timeouts on any open() which disturbs a
lot of well-known userspace applications like minicom or ModemManager.

Therefore, we enable OPTION_BLACKLIST_SENDSETUP blacklisting for it.

Signed-off-by: Gernot Hillier <gernot@hillier.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 85e5fc0..51b0beb 100644 (file)
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -359,6 +359,13 @@ struct option_blacklist_info {
        enum option_blacklist_reason reason;
 };
 
+static const u8 four_g_w14_no_sendsetup[] = { 0, 1 };
+static const struct option_blacklist_info four_g_w14_blacklist = {
+       .infolen = ARRAY_SIZE(four_g_w14_no_sendsetup),
+       .ifaceinfo = four_g_w14_no_sendsetup,
+       .reason = OPTION_BLACKLIST_SENDSETUP
+};
+
 static const struct usb_device_id option_ids[] = {
        { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
        { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
@@ -659,7 +666,9 @@ static const struct usb_device_id option_ids[] = {
        { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_X060S) },
        { USB_DEVICE(AIRPLUS_VENDOR_ID, AIRPLUS_PRODUCT_MCD650) },
        { USB_DEVICE(TLAYTECH_VENDOR_ID, TLAYTECH_PRODUCT_TEU800) },
-       { USB_DEVICE(FOUR_G_SYSTEMS_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W14) },
+       { USB_DEVICE(FOUR_G_SYSTEMS_VENDOR_ID, FOUR_G_SYSTEMS_PRODUCT_W14),
+         .driver_info = (kernel_ulong_t)&four_g_w14_blacklist
+       },
        { USB_DEVICE(HAIER_VENDOR_ID, HAIER_PRODUCT_CE100) },
        { } /* Terminating entry */
 };