diff options
Diffstat (limited to 'drivers/usb/serial/option.c')
| -rw-r--r-- | drivers/usb/serial/option.c | 71 |
1 files changed, 63 insertions, 8 deletions
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 6e94a6711f08..847b805d63a3 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -336,15 +336,42 @@ static int option_resume(struct usb_serial *serial); #define AIRPLUS_VENDOR_ID 0x1011 #define AIRPLUS_PRODUCT_MCD650 0x3198 +/* Longcheer/Longsung vendor ID; makes whitelabel devices that + * many other vendors like 4G Systems, Alcatel, ChinaBird, + * Mobidata, etc sell under their own brand names. + */ +#define LONGCHEER_VENDOR_ID 0x1c9e + /* 4G Systems products */ -#define FOUR_G_SYSTEMS_VENDOR_ID 0x1c9e +/* This is the 4G XS Stick W14 a.k.a. Mobilcom Debitel Surf-Stick * + * It seems to contain a Qualcomm QSC6240/6290 chipset */ #define FOUR_G_SYSTEMS_PRODUCT_W14 0x9603 /* Haier products */ #define HAIER_VENDOR_ID 0x201e #define HAIER_PRODUCT_CE100 0x2009 -static struct usb_device_id option_ids[] = { +/* some devices interfaces need special handling due to a number of reasons */ +enum option_blacklist_reason { + OPTION_BLACKLIST_NONE = 0, + OPTION_BLACKLIST_SENDSETUP = 1, + OPTION_BLACKLIST_RESERVED_IF = 2 +}; + +struct option_blacklist_info { + const u32 infolen; /* number of interface numbers on blacklist */ + const u8 *ifaceinfo; /* pointer to the array holding the numbers */ + 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) }, { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) }, @@ -644,7 +671,9 @@ static 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(LONGCHEER_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 */ }; @@ -709,6 +738,7 @@ struct option_intf_private { spinlock_t susp_lock; unsigned int suspended:1; int in_flight; + struct option_blacklist_info *blacklist_info; }; struct option_port_private { @@ -778,9 +808,27 @@ static int option_probe(struct usb_serial *serial, if (!data) return -ENOMEM; spin_lock_init(&data->susp_lock); + data->blacklist_info = (struct option_blacklist_info*) id->driver_info; return 0; } +static enum option_blacklist_reason is_blacklisted(const u8 ifnum, + const struct option_blacklist_info *blacklist) +{ + const u8 *info; + int i; + + if (blacklist) { + info = blacklist->ifaceinfo; + + for (i = 0; i < blacklist->infolen; i++) { + if (info[i] == ifnum) + return blacklist->reason; + } + } + return OPTION_BLACKLIST_NONE; +} + static void option_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { @@ -921,7 +969,6 @@ static void option_indat_callback(struct urb *urb) } else { tty = tty_port_tty_get(&port->port); if (urb->actual_length) { - tty_buffer_request_room(tty, urb->actual_length); tty_insert_flip_string(tty, data, urb->actual_length); tty_flip_buffer_push(tty); } else @@ -929,9 +976,9 @@ static void option_indat_callback(struct urb *urb) tty_kref_put(tty); /* Resubmit urb so we continue receiving */ - if (port->port.count && status != -ESHUTDOWN) { + if (status != -ESHUTDOWN) { err = usb_submit_urb(urb, GFP_ATOMIC); - if (err) + if (err && err != -EPERM) printk(KERN_ERR "%s: resubmit read urb failed. " "(%d)", __func__, err); else @@ -985,7 +1032,7 @@ static void option_instat_callback(struct urb *urb) (struct usb_ctrlrequest *)urb->transfer_buffer; if (!req_pkt) { - dbg("%s: NULL req_pkt\n", __func__); + dbg("%s: NULL req_pkt", __func__); return; } if ((req_pkt->bRequestType == 0xA1) && @@ -1211,11 +1258,19 @@ static void option_setup_urbs(struct usb_serial *serial) static int option_send_setup(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; + struct option_intf_private *intfdata = + (struct option_intf_private *) serial->private; struct option_port_private *portdata; int ifNum = serial->interface->cur_altsetting->desc.bInterfaceNumber; int val = 0; dbg("%s", __func__); + if (is_blacklisted(ifNum, intfdata->blacklist_info) == + OPTION_BLACKLIST_SENDSETUP) { + dbg("No send_setup on blacklisted interface #%d\n", ifNum); + return -EIO; + } + portdata = usb_get_serial_port_data(port); if (portdata->dtr_state) @@ -1401,7 +1456,7 @@ static int option_resume(struct usb_serial *serial) for (i = 0; i < serial->num_ports; i++) { port = serial->port[i]; if (!port->interrupt_in_urb) { - dbg("%s: No interrupt URB for port %d\n", __func__, i); + dbg("%s: No interrupt URB for port %d", __func__, i); continue; } err = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO); |