projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge tag 'fscache-fixes-20140917' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6-block.git] / drivers / usb / serial / sierra.c
CommitLineData
69de51fd 1/*
033a3fb9
KL		 2 USB Driver for Sierra Wireless
3
40d2ff32
EP		 4 Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>,
5
6 Copyright (C) 2008, 2009 Elina Pasheva, Matthew Safar, Rory Filer
7 <linux@sierrawireless.com>
033a3fb9
KL		 8
9 IMPORTANT DISCLAIMER: This driver is not commercially supported by
10 Sierra Wireless. Use at your own risk.
11
12 This driver is free software; you can redistribute it and/or modify
13 it under the terms of Version 2 of the GNU General Public License as
14 published by the Free Software Foundation.
15
16 Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
17 Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
033a3fb9 18*/
3a2b808e
EP		 19/* Uncomment to log function calls */
20/* #define DEBUG */
bcbec053 21
40d2ff32 22#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
033a3fb9 23#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
69de51fd
KL		 24
25#include <linux/kernel.h>
033a3fb9
KL		 26#include <linux/jiffies.h>
27#include <linux/errno.h>
69de51fd 28#include <linux/tty.h>
5a0e3ad6 29#include <linux/slab.h>
033a3fb9 30#include <linux/tty_flip.h>
69de51fd
KL		 31#include <linux/module.h>
32#include <linux/usb.h>
a969888c 33#include <linux/usb/serial.h>
69de51fd 34
228426ed
KL		 35#define SWIMS_USB_REQUEST_SetPower 0x00
36#define SWIMS_USB_REQUEST_SetNmea 0x07
112225b1 37
3a2b808e
EP		 38#define N_IN_URB_HM 8
39#define N_OUT_URB_HM 64
40#define N_IN_URB 4
41#define N_OUT_URB 4
112225b1
KL		 42#define IN_BUFLEN 4096
43
40d2ff32
EP		 44#define MAX_TRANSFER (PAGE_SIZE - 512)
45/* MAX_TRANSFER is chosen so that the VM is not stressed by
46 allocations > PAGE_SIZE and the number of packets in a page
47 is an integer 512 is the largest possible packet on EHCI */
48
90ab5ee9 49static bool nmea;
112225b1 50
4db2299d
EP		 51/* Used in interface blacklisting */
52struct sierra_iface_info {
53 const u32 infolen; /* number of interface numbers on blacklist */
54 const u8 *ifaceinfo; /* pointer to the array holding the numbers */
55};
56
e6929a90
ON		 57struct sierra_intf_private {
58 spinlock_t susp_lock;
59 unsigned int suspended:1;
60 int in_flight;
80cc0fcb 61 unsigned int open_ports;
e6929a90
ON		 62};
63
82a24e68 64static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
112225b1 65{
64318a52 66 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
228426ed 67 SWIMS_USB_REQUEST_SetPower, /* __u8 request */
f3564de4 68 USB_TYPE_VENDOR, /* __u8 request type */
228426ed
KL		 69 swiState, /* __u16 value */
70 0, /* __u16 index */
71 NULL, /* void *data */
72 0, /* __u16 size */
73 USB_CTRL_SET_TIMEOUT); /* int timeout */
112225b1
KL		 74}
75
228426ed 76static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
112225b1 77{
64318a52 78 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
228426ed 79 SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
f3564de4 80 USB_TYPE_VENDOR, /* __u8 request type */
228426ed
KL		 81 enable, /* __u16 value */
82 0x0000, /* __u16 index */
83 NULL, /* void *data */
84 0, /* __u16 size */
85 USB_CTRL_SET_TIMEOUT); /* int timeout */
228426ed
KL		 86}
87
88static int sierra_calc_num_ports(struct usb_serial *serial)
89{
9636b683
EP		 90 int num_ports = 0;
91 u8 ifnum, numendpoints;
228426ed 92
9636b683
EP		 93 ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
94 numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
228426ed 95
9636b683
EP		 96 /* Dummy interface present on some SKUs should be ignored */
97 if (ifnum == 0x99)
98 num_ports = 0;
99 else if (numendpoints <= 3)
100 num_ports = 1;
101 else
102 num_ports = (numendpoints-1)/2;
103 return num_ports;
228426ed
KL		 104}
105
4db2299d
EP		 106static int is_blacklisted(const u8 ifnum,
107 const struct sierra_iface_info *blacklist)
108{
109 const u8 *info;
110 int i;
111
112 if (blacklist) {
113 info = blacklist->ifaceinfo;
114
115 for (i = 0; i < blacklist->infolen; i++) {
116 if (info[i] == ifnum)
117 return 1;
118 }
119 }
120 return 0;
121}
122
3a2b808e
EP		 123static int is_himemory(const u8 ifnum,
124 const struct sierra_iface_info *himemorylist)
125{
126 const u8 *info;
127 int i;
128
129 if (himemorylist) {
130 info = himemorylist->ifaceinfo;
131
132 for (i=0; i < himemorylist->infolen; i++) {
133 if (info[i] == ifnum)
134 return 1;
135 }
136 }
137 return 0;
138}
139
7106967e
KL		 140static int sierra_calc_interface(struct usb_serial *serial)
141{
4e0fee82
KL		 142 int interface;
143 struct usb_interface *p_interface;
144 struct usb_host_interface *p_host_interface;
7106967e 145
4e0fee82
KL		 146 /* Get the interface structure pointer from the serial struct */
147 p_interface = serial->interface;
7106967e 148
4e0fee82
KL		 149 /* Get a pointer to the host interface structure */
150 p_host_interface = p_interface->cur_altsetting;
7106967e 151
4e0fee82
KL		 152 /* read the interface descriptor for this active altsetting
153 * to find out the interface number we are on
154 */
155 interface = p_host_interface->desc.bInterfaceNumber;
7106967e 156
4e0fee82 157 return interface;
7106967e
KL		 158}
159
228426ed
KL		 160static int sierra_probe(struct usb_serial *serial,
161 const struct usb_device_id *id)
162{
163 int result = 0;
112225b1 164 struct usb_device *udev;
228426ed 165 u8 ifnum;
112225b1 166
228426ed 167 udev = serial->dev;
e3173b22 168 ifnum = sierra_calc_interface(serial);
64318a52 169
e3173b22
KL		 170 /*
171 * If this interface supports more than 1 alternate
172 * select the 2nd one
173 */
174 if (serial->interface->num_altsetting == 2) {
175 dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
176 ifnum);
177 /* We know the alternate setting is 1 for the MC8785 */
178 usb_set_interface(udev, ifnum, 1);
179 }
7106967e 180
4db2299d
EP		 181 /* ifnum could have changed - by calling usb_set_interface */
182 ifnum = sierra_calc_interface(serial);
183
184 if (is_blacklisted(ifnum,
185 (struct sierra_iface_info *)id->driver_info)) {
186 dev_dbg(&serial->dev->dev,
187 "Ignoring blacklisted interface #%d\n", ifnum);
188 return -ENODEV;
189 }
190
228426ed 191 return result;
112225b1 192}
033a3fb9 193
3a2b808e
EP		 194/* interfaces with higher memory requirements */
195static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
196static const struct sierra_iface_info typeA_interface_list = {
197 .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
198 .ifaceinfo = hi_memory_typeA_ifaces,
199};
200
201static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
202static const struct sierra_iface_info typeB_interface_list = {
203 .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
204 .ifaceinfo = hi_memory_typeB_ifaces,
205};
206
207/* 'blacklist' of interfaces not served by this driver */
749541d1 208static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 };
4db2299d
EP		 209static const struct sierra_iface_info direct_ip_interface_blacklist = {
210 .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces),
211 .ifaceinfo = direct_ip_non_serial_ifaces,
212};
213
7d40d7e8 214static const struct usb_device_id id_table[] = {
c5f3d87d
EP		 215 { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
216 { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
cfbaa393 217 { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
c5f3d87d
EP		 218 { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
219
e43062dd 220 { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
69de51fd 221 { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
e43062dd 222 { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
69de51fd 223 { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
b9e13ac3 224 { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
c5f3d87d
EP		 225 { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
226 { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
227 { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
69de51fd 228 { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
e43062dd 229 { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
c5f3d87d 230 { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
9454c46a 231 { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
9d72c81d 232 { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U */
c5f3d87d 233 /* Sierra Wireless C597 */
4e0fee82 234 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
c5f3d87d 235 /* Sierra Wireless T598 */
e3173b22 236 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
c5f3d87d
EP		 237 { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
238 { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
239 { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
240 { USB_DEVICE(0x1199, 0x0029) }, /* Sierra Wireless Device */
9454c46a 241
69de51fd
KL		 242 { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
243 { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
c5f3d87d
EP		 244 { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
245 { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
246 { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
247 { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
9454c46a 248 { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
c5f3d87d 249 { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
7f170a63 250 { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
c5f3d87d 251 { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
69de51fd 252 { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
7106967e 253 { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
c5f3d87d 254 { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
4e0fee82
KL		 255 { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
256 { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
c5f3d87d
EP		 257 { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
258 { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
259 { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
260 { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
b77a5c70 261 { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
e3173b22 262 { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
4db2299d
EP		 263 /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
264 { USB_DEVICE(0x1199, 0x683C) },
265 { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
266 /* Sierra Wireless MC8790, MC8791, MC8792 */
267 { USB_DEVICE(0x1199, 0x683E) },
9454c46a
KL		 268 { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
269 { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
270 { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
271 { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
6835b32c 272 { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
62aad3ab 273 { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
e3173b22
KL		 274 { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
275 { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
276 /* Sierra Wireless C885 */
277 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
c5f3d87d 278 /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
e3173b22 279 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
c5f3d87d 280 /* Sierra Wireless C22/C33 */
73b2c205 281 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
c5f3d87d 282 /* Sierra Wireless HSPA Non-Composite Device */
e3173b22 283 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
c5f3d87d 284 { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
049255f5
BM		 285 /* Sierra Wireless Direct IP modems */
286 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF),
4db2299d 287 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
19a3dd15 288 },
5b3da692
BM		 289 { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF),
290 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
291 },
19a3dd15
TC		 292 /* AT&T Direct IP LTE modems */
293 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
294 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
4db2299d 295 },
049255f5
BM		 296 /* Airprime/Sierra Wireless Direct IP modems */
297 { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF),
e1dc5157
JT		 298 .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
299 },
4db2299d 300
033a3fb9
KL		 301 { }
302};
964ee1de 303MODULE_DEVICE_TABLE(usb, id_table);
033a3fb9 304
033a3fb9 305
033a3fb9 306struct sierra_port_private {
17c23274
GKH		 307 spinlock_t lock; /* lock the structure */
308 int outstanding_urbs; /* number of out urbs in flight */
e6929a90
ON		 309 struct usb_anchor active;
310 struct usb_anchor delayed;
17c23274 311
3a2b808e
EP		 312 int num_out_urbs;
313 int num_in_urbs;
4f4f9c53 314 /* Input endpoints and buffers for this port */
3a2b808e 315 struct urb *in_urbs[N_IN_URB_HM];
033a3fb9
KL		 316
317 /* Settings for the port */
318 int rts_state; /* Handshaking pins (outputs) */
319 int dtr_state;
320 int cts_state; /* Handshaking pins (inputs) */
321 int dsr_state;
322 int dcd_state;
323 int ri_state;
033a3fb9
KL		 324};
325
335f8514 326static int sierra_send_setup(struct usb_serial_port *port)
69de51fd 327{
964ee1de
GKH		 328 struct usb_serial *serial = port->serial;
329 struct sierra_port_private *portdata;
228426ed 330 __u16 interface = 0;
335f8514 331 int val = 0;
3c77d513
EP		 332 int do_send = 0;
333 int retval;
033a3fb9 334
964ee1de 335 portdata = usb_get_serial_port_data(port);
033a3fb9 336
335f8514
AC		 337 if (portdata->dtr_state)
338 val |= 0x01;
339 if (portdata->rts_state)
340 val |= 0x02;
341
342 /* If composite device then properly report interface */
00b040de 343 if (serial->num_ports == 1) {
335f8514 344 interface = sierra_calc_interface(serial);
00b040de
AC		 345 /* Control message is sent only to interfaces with
346 * interrupt_in endpoints
347 */
348 if (port->interrupt_in_urb) {
349 /* send control message */
3c77d513 350 do_send = 1;
00b040de
AC		 351 }
352 }
335f8514
AC		 353
354 /* Otherwise the need to do non-composite mapping */
355 else {
356 if (port->bulk_out_endpointAddress == 2)
357 interface = 0;
358 else if (port->bulk_out_endpointAddress == 4)
359 interface = 1;
360 else if (port->bulk_out_endpointAddress == 5)
361 interface = 2;
3c77d513
EP		 362
363 do_send = 1;
00b040de 364 }
3c77d513
EP		 365 if (!do_send)
366 return 0;
367
5b7c1178
ON		 368 retval = usb_autopm_get_interface(serial->interface);
369 if (retval < 0)
370 return retval;
371
d3048898 372 retval = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
3c77d513
EP		 373 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
374 usb_autopm_put_interface(serial->interface);
375
376 return retval;
69de51fd
KL		 377}
378
60b33c13 379static int sierra_tiocmget(struct tty_struct *tty)
033a3fb9 380{
95da310e 381 struct usb_serial_port *port = tty->driver_data;
033a3fb9
KL		 382 unsigned int value;
383 struct sierra_port_private *portdata;
384
385 portdata = usb_get_serial_port_data(port);
386
387 value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
388 ((portdata->dtr_state) ? TIOCM_DTR : 0) |
389 ((portdata->cts_state) ? TIOCM_CTS : 0) |
390 ((portdata->dsr_state) ? TIOCM_DSR : 0) |
391 ((portdata->dcd_state) ? TIOCM_CAR : 0) |
392 ((portdata->ri_state) ? TIOCM_RNG : 0);
393
394 return value;
395}
396
20b9d177 397static int sierra_tiocmset(struct tty_struct *tty,
033a3fb9
KL		 398 unsigned int set, unsigned int clear)
399{
95da310e 400 struct usb_serial_port *port = tty->driver_data;
033a3fb9
KL		 401 struct sierra_port_private *portdata;
402
403 portdata = usb_get_serial_port_data(port);
404
405 if (set & TIOCM_RTS)
406 portdata->rts_state = 1;
407 if (set & TIOCM_DTR)
408 portdata->dtr_state = 1;
409
410 if (clear & TIOCM_RTS)
411 portdata->rts_state = 0;
412 if (clear & TIOCM_DTR)
413 portdata->dtr_state = 0;
335f8514 414 return sierra_send_setup(port);
033a3fb9
KL		 415}
416
b9a44bc1
EP		 417static void sierra_release_urb(struct urb *urb)
418{
b9a44bc1 419 if (urb) {
b9a44bc1
EP		 420 kfree(urb->transfer_buffer);
421 usb_free_urb(urb);
422 }
423}
424
17c23274
GKH		 425static void sierra_outdat_callback(struct urb *urb)
426{
427 struct usb_serial_port *port = urb->context;
428 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
e6929a90 429 struct sierra_intf_private *intfdata;
17c23274 430 int status = urb->status;
17c23274 431
7c80782e 432 intfdata = usb_get_serial_data(port->serial);
17c23274
GKH		 433
434 /* free up the transfer buffer, as usb_free_urb() does not do this */
435 kfree(urb->transfer_buffer);
e6929a90 436 usb_autopm_put_interface_async(port->serial->interface);
17c23274 437 if (status)
7384a922 438 dev_dbg(&port->dev, "%s - nonzero write bulk status "
5d44b361 439 "received: %d\n", __func__, status);
17c23274 440
e6929a90 441 spin_lock(&portdata->lock);
17c23274 442 --portdata->outstanding_urbs;
e6929a90
ON		 443 spin_unlock(&portdata->lock);
444 spin_lock(&intfdata->susp_lock);
445 --intfdata->in_flight;
446 spin_unlock(&intfdata->susp_lock);
17c23274
GKH		 447
448 usb_serial_port_softint(port);
449}
450
033a3fb9 451/* Write */
95da310e
AC		 452static int sierra_write(struct tty_struct *tty, struct usb_serial_port *port,
453 const unsigned char *buf, int count)
033a3fb9 454{
a45a1e07 455 struct sierra_port_private *portdata;
e6929a90 456 struct sierra_intf_private *intfdata;
17c23274
GKH		 457 struct usb_serial *serial = port->serial;
458 unsigned long flags;
459 unsigned char *buffer;
460 struct urb *urb;
40d2ff32
EP		 461 size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
462 int retval = 0;
463
464 /* verify that we actually have some data to write */
465 if (count == 0)
466 return 0;
033a3fb9
KL		 467
468 portdata = usb_get_serial_port_data(port);
7c80782e 469 intfdata = usb_get_serial_data(serial);
033a3fb9 470
0b10395a 471 dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize);
17c23274 472 spin_lock_irqsave(&portdata->lock, flags);
40d2ff32
EP		 473 dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__,
474 portdata->outstanding_urbs);
3a2b808e 475 if (portdata->outstanding_urbs > portdata->num_out_urbs) {
17c23274 476 spin_unlock_irqrestore(&portdata->lock, flags);
7384a922 477 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
17c23274
GKH		 478 return 0;
479 }
480 portdata->outstanding_urbs++;
40d2ff32
EP		 481 dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__,
482 portdata->outstanding_urbs);
17c23274
GKH		 483 spin_unlock_irqrestore(&portdata->lock, flags);
484
e6929a90
ON		 485 retval = usb_autopm_get_interface_async(serial->interface);
486 if (retval < 0) {
487 spin_lock_irqsave(&portdata->lock, flags);
488 portdata->outstanding_urbs--;
489 spin_unlock_irqrestore(&portdata->lock, flags);
490 goto error_simple;
491 }
492
40d2ff32 493 buffer = kmalloc(writesize, GFP_ATOMIC);
17c23274 494 if (!buffer) {
40d2ff32 495 retval = -ENOMEM;
17c23274
GKH		 496 goto error_no_buffer;
497 }
033a3fb9 498
17c23274
GKH		 499 urb = usb_alloc_urb(0, GFP_ATOMIC);
500 if (!urb) {
40d2ff32 501 retval = -ENOMEM;
17c23274
GKH		 502 goto error_no_urb;
503 }
033a3fb9 504
40d2ff32 505 memcpy(buffer, buf, writesize);
033a3fb9 506
59d33f2f 507 usb_serial_debug_data(&port->dev, __func__, writesize, buffer);
17c23274
GKH		 508
509 usb_fill_bulk_urb(urb, serial->dev,
510 usb_sndbulkpipe(serial->dev,
511 port->bulk_out_endpointAddress),
40d2ff32 512 buffer, writesize, sierra_outdat_callback, port);
17c23274 513
238ebd13
EP		 514 /* Handle the need to send a zero length packet */
515 urb->transfer_flags |= URB_ZERO_PACKET;
516
e6929a90
ON		 517 spin_lock_irqsave(&intfdata->susp_lock, flags);
518
519 if (intfdata->suspended) {
520 usb_anchor_urb(urb, &portdata->delayed);
521 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
522 goto skip_power;
523 } else {
524 usb_anchor_urb(urb, &portdata->active);
525 }
17c23274 526 /* send it down the pipe */
40d2ff32
EP		 527 retval = usb_submit_urb(urb, GFP_ATOMIC);
528 if (retval) {
e6929a90
ON		 529 usb_unanchor_urb(urb);
530 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
17c23274 531 dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
40d2ff32 532 "with status = %d\n", __func__, retval);
17c23274 533 goto error;
e6929a90
ON		 534 } else {
535 intfdata->in_flight++;
536 spin_unlock_irqrestore(&intfdata->susp_lock, flags);
033a3fb9
KL		 537 }
538
e6929a90 539skip_power:
17c23274
GKH		 540 /* we are done with this urb, so let the host driver
541 * really free it when it is finished with it */
542 usb_free_urb(urb);
543
40d2ff32 544 return writesize;
17c23274
GKH		 545error:
546 usb_free_urb(urb);
547error_no_urb:
548 kfree(buffer);
549error_no_buffer:
550 spin_lock_irqsave(&portdata->lock, flags);
551 --portdata->outstanding_urbs;
40d2ff32
EP		 552 dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__,
553 portdata->outstanding_urbs);
17c23274 554 spin_unlock_irqrestore(&portdata->lock, flags);
e6929a90
ON		 555 usb_autopm_put_interface_async(serial->interface);
556error_simple:
40d2ff32 557 return retval;
033a3fb9
KL		 558}
559
560static void sierra_indat_callback(struct urb *urb)
561{
562 int err;
563 int endpoint;
564 struct usb_serial_port *port;
033a3fb9 565 unsigned char *data = urb->transfer_buffer;
17dd2215 566 int status = urb->status;
033a3fb9 567
033a3fb9 568 endpoint = usb_pipeendpoint(urb->pipe);
b0cda8c5
EP		 569 port = urb->context;
570
17dd2215 571 if (status) {
7384a922 572 dev_dbg(&port->dev, "%s: nonzero status: %d on"
5d44b361 573 " endpoint %02x\n", __func__, status, endpoint);
033a3fb9 574 } else {
033a3fb9 575 if (urb->actual_length) {
2e124b4a
JS		 576 tty_insert_flip_string(&port->port, data,
577 urb->actual_length);
578 tty_flip_buffer_push(&port->port);
579
580 usb_serial_debug_data(&port->dev, __func__,
581 urb->actual_length, data);
b0cda8c5 582 } else {
7384a922 583 dev_dbg(&port->dev, "%s: empty read urb"
5d44b361 584 " received\n", __func__);
033a3fb9
KL		 585 }
586 }
b0cda8c5
EP		 587
588 /* Resubmit urb so we continue receiving */
1f87158e 589 if (status != -ESHUTDOWN && status != -EPERM) {
e6929a90 590 usb_mark_last_busy(port->serial->dev);
b0cda8c5 591 err = usb_submit_urb(urb, GFP_ATOMIC);
1f87158e 592 if (err && err != -EPERM)
b0cda8c5
EP		 593 dev_err(&port->dev, "resubmit read urb failed."
594 "(%d)\n", err);
595 }
033a3fb9
KL		 596}
597
033a3fb9
KL		 598static void sierra_instat_callback(struct urb *urb)
599{
600 int err;
17dd2215 601 int status = urb->status;
cdc97792 602 struct usb_serial_port *port = urb->context;
033a3fb9
KL		 603 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
604 struct usb_serial *serial = port->serial;
605
5d44b361 606 dev_dbg(&port->dev, "%s: urb %p port %p has data %p\n", __func__,
7384a922 607 urb, port, portdata);
033a3fb9 608
17dd2215 609 if (status == 0) {
033a3fb9
KL		 610 struct usb_ctrlrequest *req_pkt =
611 (struct usb_ctrlrequest *)urb->transfer_buffer;
612
613 if (!req_pkt) {
7384a922
KL		 614 dev_dbg(&port->dev, "%s: NULL req_pkt\n",
615 __func__);
033a3fb9
KL		 616 return;
617 }
618 if ((req_pkt->bRequestType == 0xA1) &&
619 (req_pkt->bRequest == 0x20)) {
620 int old_dcd_state;
621 unsigned char signals = *((unsigned char *)
622 urb->transfer_buffer +
623 sizeof(struct usb_ctrlrequest));
624
5d44b361 625 dev_dbg(&port->dev, "%s: signal x%x\n", __func__,
7384a922 626 signals);
033a3fb9
KL		 627
628 old_dcd_state = portdata->dcd_state;
629 portdata->cts_state = 1;
630 portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
631 portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
632 portdata->ri_state = ((signals & 0x08) ? 1 : 0);
633
aa27a094
JS		 634 if (old_dcd_state && !portdata->dcd_state)
635 tty_port_tty_hangup(&port->port, true);
033a3fb9 636 } else {
5d44b361 637 dev_dbg(&port->dev, "%s: type %x req %x\n",
7384a922
KL		 638 __func__, req_pkt->bRequestType,
639 req_pkt->bRequest);
033a3fb9
KL		 640 }
641 } else
5d44b361 642 dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
033a3fb9
KL		 643
644 /* Resubmit urb so we continue receiving IRQ data */
1f87158e 645 if (status != -ESHUTDOWN && status != -ENOENT) {
e6929a90 646 usb_mark_last_busy(serial->dev);
033a3fb9 647 err = usb_submit_urb(urb, GFP_ATOMIC);
1f87158e 648 if (err && err != -EPERM)
c76a23da
EP		 649 dev_err(&port->dev, "%s: resubmit intr urb "
650 "failed. (%d)\n", __func__, err);
033a3fb9
KL		 651 }
652}
653
95da310e 654static int sierra_write_room(struct tty_struct *tty)
033a3fb9 655{
95da310e 656 struct usb_serial_port *port = tty->driver_data;
17c23274
GKH		 657 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
658 unsigned long flags;
033a3fb9 659
17c23274
GKH		 660 /* try to give a good number back based on if we have any free urbs at
661 * this point in time */
662 spin_lock_irqsave(&portdata->lock, flags);
3a2b808e 663 if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) {
17c23274 664 spin_unlock_irqrestore(&portdata->lock, flags);
7384a922 665 dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
17c23274 666 return 0;
033a3fb9 667 }
17c23274 668 spin_unlock_irqrestore(&portdata->lock, flags);
033a3fb9 669
17c23274 670 return 2048;
033a3fb9
KL		 671}
672
93670599
JH		 673static int sierra_chars_in_buffer(struct tty_struct *tty)
674{
675 struct usb_serial_port *port = tty->driver_data;
676 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
677 unsigned long flags;
678 int chars;
679
680 /* NOTE: This overcounts somewhat. */
681 spin_lock_irqsave(&portdata->lock, flags);
682 chars = portdata->outstanding_urbs * MAX_TRANSFER;
683 spin_unlock_irqrestore(&portdata->lock, flags);
684
685 dev_dbg(&port->dev, "%s - %d\n", __func__, chars);
686
687 return chars;
688}
689
b9a44bc1 690static void sierra_stop_rx_urbs(struct usb_serial_port *port)
033a3fb9 691{
9e85c5f6 692 int i;
b9a44bc1 693 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
033a3fb9 694
3a2b808e 695 for (i = 0; i < portdata->num_in_urbs; i++)
b9a44bc1 696 usb_kill_urb(portdata->in_urbs[i]);
033a3fb9 697
b9a44bc1
EP		 698 usb_kill_urb(port->interrupt_in_urb);
699}
033a3fb9 700
b9a44bc1
EP		 701static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
702{
703 int ok_cnt;
704 int err = -EINVAL;
705 int i;
706 struct urb *urb;
707 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
033a3fb9 708
b9a44bc1 709 ok_cnt = 0;
3a2b808e 710 for (i = 0; i < portdata->num_in_urbs; i++) {
033a3fb9 711 urb = portdata->in_urbs[i];
9e85c5f6 712 if (!urb)
033a3fb9 713 continue;
b9a44bc1
EP		 714 err = usb_submit_urb(urb, mem_flags);
715 if (err) {
716 dev_err(&port->dev, "%s: submit urb failed: %d\n",
717 __func__, err);
718 } else {
719 ok_cnt++;
033a3fb9 720 }
b9a44bc1 721 }
033a3fb9 722
b9a44bc1
EP		 723 if (ok_cnt && port->interrupt_in_urb) {
724 err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
725 if (err) {
726 dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
727 __func__, err);
033a3fb9
KL		 728 }
729 }
730
b9a44bc1
EP		 731 if (ok_cnt > 0) /* at least one rx urb submitted */
732 return 0;
733 else
734 return err;
735}
736
737static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
738 int dir, void *ctx, int len,
739 gfp_t mem_flags,
740 usb_complete_t callback)
741{
742 struct urb *urb;
743 u8 *buf;
744
b9a44bc1 745 urb = usb_alloc_urb(0, mem_flags);
10c642d0 746 if (!urb)
b9a44bc1 747 return NULL;
b9a44bc1
EP		 748
749 buf = kmalloc(len, mem_flags);
750 if (buf) {
751 /* Fill URB using supplied data */
752 usb_fill_bulk_urb(urb, serial->dev,
753 usb_sndbulkpipe(serial->dev, endpoint) | dir,
754 buf, len, callback, ctx);
755
b9a44bc1
EP		 756 dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
757 dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
758 } else {
b9a44bc1
EP		 759 sierra_release_urb(urb);
760 urb = NULL;
761 }
762
763 return urb;
033a3fb9
KL		 764}
765
b9a44bc1 766static void sierra_close(struct usb_serial_port *port)
033a3fb9 767{
b9a44bc1 768 int i;
033a3fb9
KL		 769 struct usb_serial *serial = port->serial;
770 struct sierra_port_private *portdata;
7c80782e 771 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
014333f7 772 struct urb *urb;
e6929a90 773
033a3fb9 774 portdata = usb_get_serial_port_data(port);
b9a44bc1 775
c2e45d70
JH		 776 /*
777 * Need to take susp_lock to make sure port is not already being
778 * resumed, but no need to hold it due to ASYNC_INITIALIZED.
779 */
9c210bfa 780 spin_lock_irq(&intfdata->susp_lock);
80cc0fcb
JH		 781 if (--intfdata->open_ports == 0)
782 serial->interface->needs_remote_wakeup = 0;
9c210bfa
JH		 783 spin_unlock_irq(&intfdata->susp_lock);
784
014333f7
JH		 785 for (;;) {
786 urb = usb_get_from_anchor(&portdata->delayed);
787 if (!urb)
788 break;
789 kfree(urb->transfer_buffer);
790 usb_free_urb(urb);
791 usb_autopm_put_interface_async(serial->interface);
792 spin_lock(&portdata->lock);
793 portdata->outstanding_urbs--;
794 spin_unlock(&portdata->lock);
795 }
796
9c210bfa 797 sierra_stop_rx_urbs(port);
c9d838a8
JH		 798 usb_kill_anchored_urbs(&portdata->active);
799
9c210bfa
JH		 800 for (i = 0; i < portdata->num_in_urbs; i++) {
801 sierra_release_urb(portdata->in_urbs[i]);
802 portdata->in_urbs[i] = NULL;
335f8514 803 }
0287d5c5
JH		 804
805 usb_autopm_get_interface_no_resume(serial->interface);
335f8514
AC		 806}
807
a509a7e4 808static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
335f8514 809{
b9a44bc1
EP		 810 struct sierra_port_private *portdata;
811 struct usb_serial *serial = port->serial;
7c80782e 812 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
335f8514 813 int i;
b9a44bc1
EP		 814 int err;
815 int endpoint;
816 struct urb *urb;
817
818 portdata = usb_get_serial_port_data(port);
819
b9a44bc1 820 endpoint = port->bulk_in_endpointAddress;
3a2b808e 821 for (i = 0; i < portdata->num_in_urbs; i++) {
b9a44bc1
EP		 822 urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
823 IN_BUFLEN, GFP_KERNEL,
824 sierra_indat_callback);
825 portdata->in_urbs[i] = urb;
826 }
827 /* clear halt condition */
828 usb_clear_halt(serial->dev,
829 usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
830
831 err = sierra_submit_rx_urbs(port, GFP_KERNEL);
353fe198
JH		 832 if (err)
833 goto err_submit;
834
e6929a90 835 spin_lock_irq(&intfdata->susp_lock);
80cc0fcb
JH		 836 if (++intfdata->open_ports == 1)
837 serial->interface->needs_remote_wakeup = 1;
e6929a90
ON		 838 spin_unlock_irq(&intfdata->susp_lock);
839 usb_autopm_put_interface(serial->interface);
840
b9a44bc1 841 return 0;
353fe198
JH		 842
843err_submit:
844 sierra_stop_rx_urbs(port);
845
846 for (i = 0; i < portdata->num_in_urbs; i++) {
847 sierra_release_urb(portdata->in_urbs[i]);
848 portdata->in_urbs[i] = NULL;
849 }
850
851 return err;
b9a44bc1
EP		 852}
853
854
855static void sierra_dtr_rts(struct usb_serial_port *port, int on)
856{
335f8514 857 struct sierra_port_private *portdata;
033a3fb9 858
335f8514 859 portdata = usb_get_serial_port_data(port);
b9a44bc1
EP		 860 portdata->rts_state = on;
861 portdata->dtr_state = on;
335f8514 862
b2ca6990 863 sierra_send_setup(port);
033a3fb9
KL		 864}
865
033a3fb9
KL		 866static int sierra_startup(struct usb_serial *serial)
867{
084817d7 868 struct sierra_intf_private *intfdata;
033a3fb9 869
084817d7
JH		 870 intfdata = kzalloc(sizeof(*intfdata), GFP_KERNEL);
871 if (!intfdata)
872 return -ENOMEM;
873
874 spin_lock_init(&intfdata->susp_lock);
875
876 usb_set_serial_data(serial, intfdata);
877
228426ed 878 /* Set Device mode to D0 */
112225b1
KL		 879 sierra_set_power_state(serial->dev, 0x0000);
880
228426ed
KL		 881 /* Check NMEA and set */
882 if (nmea)
883 sierra_vsc_set_nmea(serial->dev, 1);
884
f525c05b
JH		 885 return 0;
886}
887
888static void sierra_release(struct usb_serial *serial)
889{
890 struct sierra_intf_private *intfdata;
891
892 intfdata = usb_get_serial_data(serial);
893 kfree(intfdata);
894}
895
896static int sierra_port_probe(struct usb_serial_port *port)
897{
898 struct usb_serial *serial = port->serial;
899 struct sierra_port_private *portdata;
900 const struct sierra_iface_info *himemoryp;
901 u8 ifnum;
902
903 portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
904 if (!portdata)
905 return -ENOMEM;
906
907 spin_lock_init(&portdata->lock);
908 init_usb_anchor(&portdata->active);
909 init_usb_anchor(&portdata->delayed);
910
911 /* Assume low memory requirements */
912 portdata->num_out_urbs = N_OUT_URB;
913 portdata->num_in_urbs = N_IN_URB;
914
915 /* Determine actual memory requirements */
916 if (serial->num_ports == 1) {
917 /* Get interface number for composite device */
918 ifnum = sierra_calc_interface(serial);
919 himemoryp = &typeB_interface_list;
920 } else {
921 /* This is really the usb-serial port number of the interface
922 * rather than the interface number.
923 */
1143832e 924 ifnum = port->port_number;
f525c05b 925 himemoryp = &typeA_interface_list;
033a3fb9
KL		 926 }
927
f525c05b
JH		 928 if (is_himemory(ifnum, himemoryp)) {
929 portdata->num_out_urbs = N_OUT_URB_HM;
930 portdata->num_in_urbs = N_IN_URB_HM;
7e41f9bc
JH		 931 }
932
f525c05b
JH		 933 dev_dbg(&port->dev,
934 "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
935 ifnum, portdata->num_in_urbs, portdata->num_out_urbs);
936
937 usb_set_serial_port_data(port, portdata);
938
939 return 0;
033a3fb9
KL		 940}
941
f525c05b 942static int sierra_port_remove(struct usb_serial_port *port)
033a3fb9 943{
033a3fb9
KL		 944 struct sierra_port_private *portdata;
945
f525c05b 946 portdata = usb_get_serial_port_data(port);
8452727d 947 usb_set_serial_port_data(port, NULL);
f525c05b
JH		 948 kfree(portdata);
949
950 return 0;
033a3fb9
KL		 951}
952
cd604513 953#ifdef CONFIG_PM
e6929a90
ON		 954static void stop_read_write_urbs(struct usb_serial *serial)
955{
b64dc0a5 956 int i;
e6929a90
ON		 957 struct usb_serial_port *port;
958 struct sierra_port_private *portdata;
959
960 /* Stop reading/writing urbs */
961 for (i = 0; i < serial->num_ports; ++i) {
962 port = serial->port[i];
963 portdata = usb_get_serial_port_data(port);
8452727d
JH		 964 if (!portdata)
965 continue;
b64dc0a5 966 sierra_stop_rx_urbs(port);
e6929a90
ON		 967 usb_kill_anchored_urbs(&portdata->active);
968 }
969}
970
971static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
972{
7d8825be 973 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
e6929a90 974
7d8825be 975 spin_lock_irq(&intfdata->susp_lock);
5b1b0b81 976 if (PMSG_IS_AUTO(message)) {
7d8825be 977 if (intfdata->in_flight) {
e6929a90
ON		 978 spin_unlock_irq(&intfdata->susp_lock);
979 return -EBUSY;
e6929a90
ON		 980 }
981 }
7d8825be
JH		 982 intfdata->suspended = 1;
983 spin_unlock_irq(&intfdata->susp_lock);
984
e6929a90
ON		 985 stop_read_write_urbs(serial);
986
987 return 0;
988}
989
71c149b9
JH		 990/* Caller must hold susp_lock. */
991static int sierra_submit_delayed_urbs(struct usb_serial_port *port)
992{
993 struct sierra_port_private *portdata = usb_get_serial_port_data(port);
994 struct sierra_intf_private *intfdata;
995 struct urb *urb;
996 int ec = 0;
997 int err;
998
999 intfdata = usb_get_serial_data(port->serial);
1000
1001 for (;;) {
1002 urb = usb_get_from_anchor(&portdata->delayed);
1003 if (!urb)
1004 break;
1005
1006 usb_anchor_urb(urb, &portdata->active);
1007 intfdata->in_flight++;
1008 err = usb_submit_urb(urb, GFP_ATOMIC);
1009 if (err) {
1010 dev_err(&port->dev, "%s - submit urb failed: %d",
1011 __func__, err);
1012 ec++;
1013 intfdata->in_flight--;
1014 usb_unanchor_urb(urb);
1015 kfree(urb->transfer_buffer);
1016 usb_free_urb(urb);
1017
1018 spin_lock(&portdata->lock);
1019 portdata->outstanding_urbs--;
1020 spin_unlock(&portdata->lock);
1021 }
1022 }
1023
1024 if (ec)
1025 return -EIO;
1026
1027 return 0;
1028}
1029
e6929a90
ON		 1030static int sierra_resume(struct usb_serial *serial)
1031{
1032 struct usb_serial_port *port;
7c80782e 1033 struct sierra_intf_private *intfdata = usb_get_serial_data(serial);
e6929a90
ON		 1034 int ec = 0;
1035 int i, err;
1036
1037 spin_lock_irq(&intfdata->susp_lock);
1038 for (i = 0; i < serial->num_ports; i++) {
1039 port = serial->port[i];
e6929a90 1040
c2e45d70 1041 if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags))
8452727d
JH		 1042 continue;
1043
71c149b9
JH		 1044 err = sierra_submit_delayed_urbs(port);
1045 if (err)
1046 ec++;
e6929a90 1047
a283d080
JH		 1048 err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
1049 if (err)
1050 ec++;
e6929a90
ON		 1051 }
1052 intfdata->suspended = 0;
1053 spin_unlock_irq(&intfdata->susp_lock);
1054
1055 return ec ? -EIO : 0;
1056}
7650cd96 1057
cd604513
AM		 1058#else
1059#define sierra_suspend NULL
1060#define sierra_resume NULL
1061#endif
e6929a90 1062
228426ed 1063static struct usb_serial_driver sierra_device = {
964ee1de
GKH		 1064 .driver = {
1065 .owner = THIS_MODULE,
4e0fee82 1066 .name = "sierra",
964ee1de 1067 },
228426ed
KL		 1068 .description = "Sierra USB modem",
1069 .id_table = id_table,
228426ed
KL		 1070 .calc_num_ports = sierra_calc_num_ports,
1071 .probe = sierra_probe,
964ee1de
GKH		 1072 .open = sierra_open,
1073 .close = sierra_close,
335f8514 1074 .dtr_rts = sierra_dtr_rts,
964ee1de
GKH		 1075 .write = sierra_write,
1076 .write_room = sierra_write_room,
93670599 1077 .chars_in_buffer = sierra_chars_in_buffer,
964ee1de
GKH		 1078 .tiocmget = sierra_tiocmget,
1079 .tiocmset = sierra_tiocmset,
1080 .attach = sierra_startup,
7bae0a07 1081 .release = sierra_release,
f525c05b
JH		 1082 .port_probe = sierra_port_probe,
1083 .port_remove = sierra_port_remove,
e6929a90
ON		 1084 .suspend = sierra_suspend,
1085 .resume = sierra_resume,
964ee1de
GKH		 1086 .read_int_callback = sierra_instat_callback,
1087};
1088
d860322f
AS		 1089static struct usb_serial_driver * const serial_drivers[] = {
1090 &sierra_device, NULL
1091};
1092
68e24113 1093module_usb_serial_driver(serial_drivers, id_table);
964ee1de 1094
033a3fb9
KL		 1095MODULE_AUTHOR(DRIVER_AUTHOR);
1096MODULE_DESCRIPTION(DRIVER_DESC);
69de51fd 1097MODULE_LICENSE("GPL");
033a3fb9 1098
4e0fee82 1099module_param(nmea, bool, S_IRUGO | S_IWUSR);
228426ed 1100MODULE_PARM_DESC(nmea, "NMEA streaming");
Linux 6.x block layer and io_uring tree(s)