btmrvl_main.c 15 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
/**
 * Marvell Bluetooth driver
 *
 * Copyright (C) 2009, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 **/

21 22
#include <linux/module.h>

23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>

#include "btmrvl_drv.h"

#define VERSION "1.0"

/*
 * This function is called by interface specific interrupt handler.
 * It updates Power Save & Host Sleep states, and wakes up the main
 * thread.
 */
void btmrvl_interrupt(struct btmrvl_private *priv)
{
	priv->adapter->ps_state = PS_AWAKE;

	priv->adapter->wakeup_tries = 0;

	priv->adapter->int_count++;

	wake_up_interruptible(&priv->main_thread.wait_q);
}
EXPORT_SYMBOL_GPL(btmrvl_interrupt);

47
bool btmrvl_check_evtpkt(struct btmrvl_private *priv, struct sk_buff *skb)
48
{
49
	struct hci_event_hdr *hdr = (void *) skb->data;
50 51

	if (hdr->evt == HCI_EV_CMD_COMPLETE) {
52 53 54
		struct hci_ev_cmd_complete *ec;
		u16 opcode, ocf, ogf;

55
		ec = (void *) (skb->data + HCI_EVENT_HDR_SIZE);
56 57
		opcode = __le16_to_cpu(ec->opcode);
		ocf = hci_opcode_ocf(opcode);
58 59
		ogf = hci_opcode_ogf(opcode);

60 61
		if (ocf == BT_CMD_MODULE_CFG_REQ &&
					priv->btmrvl_dev.sendcmdflag) {
62 63 64 65
			priv->btmrvl_dev.sendcmdflag = false;
			priv->adapter->cmd_complete = true;
			wake_up_interruptible(&priv->adapter->cmd_wait_q);
		}
66 67

		if (ogf == OGF) {
68 69
			BT_DBG("vendor event skipped: ogf 0x%4.4x ocf 0x%4.4x",
			       ogf, ocf);
70 71 72
			kfree_skb(skb);
			return false;
		}
73
	}
74 75

	return true;
76 77 78 79 80 81 82
}
EXPORT_SYMBOL_GPL(btmrvl_check_evtpkt);

int btmrvl_process_event(struct btmrvl_private *priv, struct sk_buff *skb)
{
	struct btmrvl_adapter *adapter = priv->adapter;
	struct btmrvl_event *event;
83
	int ret = 0;
84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108

	event = (struct btmrvl_event *) skb->data;
	if (event->ec != 0xff) {
		BT_DBG("Not Marvell Event=%x", event->ec);
		ret = -EINVAL;
		goto exit;
	}

	switch (event->data[0]) {
	case BT_CMD_AUTO_SLEEP_MODE:
		if (!event->data[2]) {
			if (event->data[1] == BT_PS_ENABLE)
				adapter->psmode = 1;
			else
				adapter->psmode = 0;
			BT_DBG("PS Mode:%s",
				(adapter->psmode) ? "Enable" : "Disable");
		} else {
			BT_DBG("PS Mode command failed");
		}
		break;

	case BT_CMD_HOST_SLEEP_CONFIG:
		if (!event->data[3])
			BT_DBG("gpio=%x, gap=%x", event->data[1],
109
							event->data[2]);
110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126
		else
			BT_DBG("HSCFG command failed");
		break;

	case BT_CMD_HOST_SLEEP_ENABLE:
		if (!event->data[1]) {
			adapter->hs_state = HS_ACTIVATED;
			if (adapter->psmode)
				adapter->ps_state = PS_SLEEP;
			wake_up_interruptible(&adapter->cmd_wait_q);
			BT_DBG("HS ACTIVATED!");
		} else {
			BT_DBG("HS Enable failed");
		}
		break;

	case BT_CMD_MODULE_CFG_REQ:
127 128
		if (priv->btmrvl_dev.sendcmdflag &&
				event->data[1] == MODULE_BRINGUP_REQ) {
129 130 131 132
			BT_DBG("EVENT:%s",
				((event->data[2] == MODULE_BROUGHT_UP) ||
				(event->data[2] == MODULE_ALREADY_UP)) ?
				"Bring-up succeed" : "Bring-up failed");
133

134 135
			if (event->length > 3 && event->data[3])
				priv->btmrvl_dev.dev_type = HCI_AMP;
136 137 138 139
			else
				priv->btmrvl_dev.dev_type = HCI_BREDR;

			BT_DBG("dev_type: %d", priv->btmrvl_dev.dev_type);
140 141
		} else if (priv->btmrvl_dev.sendcmdflag &&
				event->data[1] == MODULE_SHUTDOWN_REQ) {
142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172
			BT_DBG("EVENT:%s", (event->data[2]) ?
				"Shutdown failed" : "Shutdown succeed");
		} else {
			BT_DBG("BT_CMD_MODULE_CFG_REQ resp for APP");
			ret = -EINVAL;
		}
		break;

	case BT_EVENT_POWER_STATE:
		if (event->data[1] == BT_PS_SLEEP)
			adapter->ps_state = PS_SLEEP;
		BT_DBG("EVENT:%s",
			(adapter->ps_state) ? "PS_SLEEP" : "PS_AWAKE");
		break;

	default:
		BT_DBG("Unknown Event=%d", event->data[0]);
		ret = -EINVAL;
		break;
	}

exit:
	if (!ret)
		kfree_skb(skb);

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_process_event);

int btmrvl_send_module_cfg_cmd(struct btmrvl_private *priv, int subcmd)
{
173
	struct sk_buff *skb;
174
	struct btmrvl_cmd *cmd;
175
	int ret = 0;
176 177 178 179

	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	if (skb == NULL) {
		BT_ERR("No free skb");
180
		return -ENOMEM;
181 182
	}

183
	cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
184
	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_MODULE_CFG_REQ));
185 186 187 188 189
	cmd->length = 1;
	cmd->data[0] = subcmd;

	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

190
	skb->dev = (void *) priv->btmrvl_dev.hcidev;
191 192 193 194 195 196 197 198 199 200
	skb_queue_head(&priv->adapter->tx_queue, skb);

	priv->btmrvl_dev.sendcmdflag = true;

	priv->adapter->cmd_complete = false;

	BT_DBG("Queue module cfg Command");

	wake_up_interruptible(&priv->main_thread.wait_q);

201 202 203
	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
				priv->adapter->cmd_complete,
				msecs_to_jiffies(WAIT_UNTIL_CMD_RESP))) {
204 205
		ret = -ETIMEDOUT;
		BT_ERR("module_cfg_cmd(%x): timeout: %d",
206
					subcmd, priv->btmrvl_dev.sendcmdflag);
207 208 209 210 211 212 213 214
	}

	BT_DBG("module cfg Command done");

	return ret;
}
EXPORT_SYMBOL_GPL(btmrvl_send_module_cfg_cmd);

215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244
int btmrvl_send_hscfg_cmd(struct btmrvl_private *priv)
{
	struct sk_buff *skb;
	struct btmrvl_cmd *cmd;

	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	if (!skb) {
		BT_ERR("No free skb");
		return -ENOMEM;
	}

	cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
						   BT_CMD_HOST_SLEEP_CONFIG));
	cmd->length = 2;
	cmd->data[0] = (priv->btmrvl_dev.gpio_gap & 0xff00) >> 8;
	cmd->data[1] = (u8) (priv->btmrvl_dev.gpio_gap & 0x00ff);

	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

	skb->dev = (void *) priv->btmrvl_dev.hcidev;
	skb_queue_head(&priv->adapter->tx_queue, skb);

	BT_DBG("Queue HSCFG Command, gpio=0x%x, gap=0x%x", cmd->data[0],
	       cmd->data[1]);

	return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_send_hscfg_cmd);

245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276
int btmrvl_enable_ps(struct btmrvl_private *priv)
{
	struct sk_buff *skb;
	struct btmrvl_cmd *cmd;

	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	if (skb == NULL) {
		BT_ERR("No free skb");
		return -ENOMEM;
	}

	cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF,
					BT_CMD_AUTO_SLEEP_MODE));
	cmd->length = 1;

	if (priv->btmrvl_dev.psmode)
		cmd->data[0] = BT_PS_ENABLE;
	else
		cmd->data[0] = BT_PS_DISABLE;

	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

	skb->dev = (void *) priv->btmrvl_dev.hcidev;
	skb_queue_head(&priv->adapter->tx_queue, skb);

	BT_DBG("Queue PSMODE Command:%d", cmd->data[0]);

	return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_enable_ps);

277
int btmrvl_enable_hs(struct btmrvl_private *priv)
278
{
279
	struct sk_buff *skb;
280
	struct btmrvl_cmd *cmd;
281
	int ret = 0;
282 283 284 285

	skb = bt_skb_alloc(sizeof(*cmd), GFP_ATOMIC);
	if (skb == NULL) {
		BT_ERR("No free skb");
286
		return -ENOMEM;
287 288
	}

289
	cmd = (struct btmrvl_cmd *) skb_put(skb, sizeof(*cmd));
290
	cmd->ocf_ogf = cpu_to_le16(hci_opcode_pack(OGF, BT_CMD_HOST_SLEEP_ENABLE));
291 292 293 294
	cmd->length = 0;

	bt_cb(skb)->pkt_type = MRVL_VENDOR_PKT;

295
	skb->dev = (void *) priv->btmrvl_dev.hcidev;
296 297 298 299 300 301
	skb_queue_head(&priv->adapter->tx_queue, skb);

	BT_DBG("Queue hs enable Command");

	wake_up_interruptible(&priv->main_thread.wait_q);

302
	if (!wait_event_interruptible_timeout(priv->adapter->cmd_wait_q,
303 304 305
			priv->adapter->hs_state,
			msecs_to_jiffies(WAIT_UNTIL_HS_STATE_CHANGED))) {
		ret = -ETIMEDOUT;
306 307 308
		BT_ERR("timeout: %d, %d,%d", priv->adapter->hs_state,
						priv->adapter->ps_state,
						priv->adapter->wakeup_tries);
309 310 311 312
	}

	return ret;
}
313
EXPORT_SYMBOL_GPL(btmrvl_enable_hs);
314 315 316

int btmrvl_prepare_command(struct btmrvl_private *priv)
{
317
	int ret = 0;
318 319 320

	if (priv->btmrvl_dev.hscfgcmd) {
		priv->btmrvl_dev.hscfgcmd = 0;
321
		btmrvl_send_hscfg_cmd(priv);
322 323 324 325
	}

	if (priv->btmrvl_dev.pscmd) {
		priv->btmrvl_dev.pscmd = 0;
326
		btmrvl_enable_ps(priv);
327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344
	}

	if (priv->btmrvl_dev.hscmd) {
		priv->btmrvl_dev.hscmd = 0;

		if (priv->btmrvl_dev.hsmode) {
			ret = btmrvl_enable_hs(priv);
		} else {
			ret = priv->hw_wakeup_firmware(priv);
			priv->adapter->hs_state = HS_DEACTIVATED;
		}
	}

	return ret;
}

static int btmrvl_tx_pkt(struct btmrvl_private *priv, struct sk_buff *skb)
{
345
	int ret = 0;
346

347
	if (!skb || !skb->data)
348 349 350 351
		return -EINVAL;

	if (!skb->len || ((skb->len + BTM_HEADER_LEN) > BTM_UPLD_SIZE)) {
		BT_ERR("Tx Error: Bad skb length %d : %d",
352
						skb->len, BTM_UPLD_SIZE);
353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405
		return -EINVAL;
	}

	if (skb_headroom(skb) < BTM_HEADER_LEN) {
		struct sk_buff *tmp = skb;

		skb = skb_realloc_headroom(skb, BTM_HEADER_LEN);
		if (!skb) {
			BT_ERR("Tx Error: realloc_headroom failed %d",
				BTM_HEADER_LEN);
			skb = tmp;
			return -EINVAL;
		}

		kfree_skb(tmp);
	}

	skb_push(skb, BTM_HEADER_LEN);

	/* header type: byte[3]
	 * HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor
	 * header length: byte[2][1][0]
	 */

	skb->data[0] = (skb->len & 0x0000ff);
	skb->data[1] = (skb->len & 0x00ff00) >> 8;
	skb->data[2] = (skb->len & 0xff0000) >> 16;
	skb->data[3] = bt_cb(skb)->pkt_type;

	if (priv->hw_host_to_card)
		ret = priv->hw_host_to_card(priv, skb->data, skb->len);

	return ret;
}

static void btmrvl_init_adapter(struct btmrvl_private *priv)
{
	skb_queue_head_init(&priv->adapter->tx_queue);

	priv->adapter->ps_state = PS_AWAKE;

	init_waitqueue_head(&priv->adapter->cmd_wait_q);
}

static void btmrvl_free_adapter(struct btmrvl_private *priv)
{
	skb_queue_purge(&priv->adapter->tx_queue);

	kfree(priv->adapter);

	priv->adapter = NULL;
}

406 407
static int btmrvl_ioctl(struct hci_dev *hdev,
				unsigned int cmd, unsigned long arg)
408 409 410 411 412 413
{
	return -ENOIOCTLCMD;
}

static int btmrvl_send_frame(struct sk_buff *skb)
{
414
	struct hci_dev *hdev = (struct hci_dev *) skb->dev;
415 416
	struct btmrvl_private *priv = NULL;

417
	BT_DBG("type=%d, len=%d", skb->pkt_type, skb->len);
418

419
	if (!hdev) {
420 421 422 423
		BT_ERR("Frame for unknown HCI device");
		return -ENODEV;
	}

424 425
	priv = hci_get_drvdata(hdev);

426 427 428
	if (!test_bit(HCI_RUNNING, &hdev->flags)) {
		BT_ERR("Failed testing HCI_RUNING, flags=%lx", hdev->flags);
		print_hex_dump_bytes("data: ", DUMP_PREFIX_OFFSET,
429
							skb->data, skb->len);
430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455
		return -EBUSY;
	}

	switch (bt_cb(skb)->pkt_type) {
	case HCI_COMMAND_PKT:
		hdev->stat.cmd_tx++;
		break;

	case HCI_ACLDATA_PKT:
		hdev->stat.acl_tx++;
		break;

	case HCI_SCODATA_PKT:
		hdev->stat.sco_tx++;
		break;
	}

	skb_queue_tail(&priv->adapter->tx_queue, skb);

	wake_up_interruptible(&priv->main_thread.wait_q);

	return 0;
}

static int btmrvl_flush(struct hci_dev *hdev)
{
456
	struct btmrvl_private *priv = hci_get_drvdata(hdev);
457 458 459 460 461 462 463 464

	skb_queue_purge(&priv->adapter->tx_queue);

	return 0;
}

static int btmrvl_close(struct hci_dev *hdev)
{
465
	struct btmrvl_private *priv = hci_get_drvdata(hdev);
466

467
	if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500
		return 0;

	skb_queue_purge(&priv->adapter->tx_queue);

	return 0;
}

static int btmrvl_open(struct hci_dev *hdev)
{
	set_bit(HCI_RUNNING, &hdev->flags);

	return 0;
}

/*
 * This function handles the event generated by firmware, rx data
 * received from firmware, and tx data sent from kernel.
 */
static int btmrvl_service_main_thread(void *data)
{
	struct btmrvl_thread *thread = data;
	struct btmrvl_private *priv = thread->priv;
	struct btmrvl_adapter *adapter = priv->adapter;
	wait_queue_t wait;
	struct sk_buff *skb;
	ulong flags;

	init_waitqueue_entry(&wait, current);

	for (;;) {
		add_wait_queue(&thread->wait_q, &wait);

		set_current_state(TASK_INTERRUPTIBLE);
501 502 503 504
		if (kthread_should_stop()) {
			BT_DBG("main_thread: break from main thread");
			break;
		}
505 506

		if (adapter->wakeup_tries ||
507 508 509
				((!adapter->int_count) &&
				(!priv->btmrvl_dev.tx_dnld_rdy ||
				skb_queue_empty(&adapter->tx_queue)))) {
510 511 512 513 514 515 516 517 518 519 520 521 522
			BT_DBG("main_thread is sleeping...");
			schedule();
		}

		set_current_state(TASK_RUNNING);

		remove_wait_queue(&thread->wait_q, &wait);

		BT_DBG("main_thread woke up");

		spin_lock_irqsave(&priv->driver_lock, flags);
		if (adapter->int_count) {
			adapter->int_count = 0;
523 524
			spin_unlock_irqrestore(&priv->driver_lock, flags);
			priv->hw_process_int_status(priv);
525 526
		} else if (adapter->ps_state == PS_SLEEP &&
					!skb_queue_empty(&adapter->tx_queue)) {
527 528 529 530
			spin_unlock_irqrestore(&priv->driver_lock, flags);
			adapter->wakeup_tries++;
			priv->hw_wakeup_firmware(priv);
			continue;
531 532
		} else {
			spin_unlock_irqrestore(&priv->driver_lock, flags);
533 534 535 536 537 538 539 540 541 542 543 544 545
		}

		if (adapter->ps_state == PS_SLEEP)
			continue;

		if (!priv->btmrvl_dev.tx_dnld_rdy)
			continue;

		skb = skb_dequeue(&adapter->tx_queue);
		if (skb) {
			if (btmrvl_tx_pkt(priv, skb))
				priv->btmrvl_dev.hcidev->stat.err_tx++;
			else
546
				priv->btmrvl_dev.hcidev->stat.byte_tx += skb->len;
547 548 549 550 551 552 553 554

			kfree_skb(skb);
		}
	}

	return 0;
}

555
int btmrvl_register_hdev(struct btmrvl_private *priv)
556 557 558 559 560 561 562 563 564 565 566
{
	struct hci_dev *hdev = NULL;
	int ret;

	hdev = hci_alloc_dev();
	if (!hdev) {
		BT_ERR("Can not allocate HCI device");
		goto err_hdev;
	}

	priv->btmrvl_dev.hcidev = hdev;
567
	hci_set_drvdata(hdev, priv);
568

569
	hdev->bus = HCI_SDIO;
570 571 572 573 574 575
	hdev->open = btmrvl_open;
	hdev->close = btmrvl_close;
	hdev->flush = btmrvl_flush;
	hdev->send = btmrvl_send_frame;
	hdev->ioctl = btmrvl_ioctl;

576 577
	btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);

578 579
	hdev->dev_type = priv->btmrvl_dev.dev_type;

580 581 582 583 584 585
	ret = hci_register_dev(hdev);
	if (ret < 0) {
		BT_ERR("Can not register HCI device");
		goto err_hci_register_dev;
	}

586 587 588 589
#ifdef CONFIG_DEBUG_FS
	btmrvl_debugfs_init(hdev);
#endif

590
	return 0;
591 592 593 594 595

err_hci_register_dev:
	hci_free_dev(hdev);

err_hdev:
596 597 598
	/* Stop the thread servicing the interrupts */
	kthread_stop(priv->main_thread.task);

599
	btmrvl_free_adapter(priv);
600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635
	kfree(priv);

	return -ENOMEM;
}
EXPORT_SYMBOL_GPL(btmrvl_register_hdev);

struct btmrvl_private *btmrvl_add_card(void *card)
{
	struct btmrvl_private *priv;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv) {
		BT_ERR("Can not allocate priv");
		goto err_priv;
	}

	priv->adapter = kzalloc(sizeof(*priv->adapter), GFP_KERNEL);
	if (!priv->adapter) {
		BT_ERR("Allocate buffer for btmrvl_adapter failed!");
		goto err_adapter;
	}

	btmrvl_init_adapter(priv);

	BT_DBG("Starting kthread...");
	priv->main_thread.priv = priv;
	spin_lock_init(&priv->driver_lock);

	init_waitqueue_head(&priv->main_thread.wait_q);
	priv->main_thread.task = kthread_run(btmrvl_service_main_thread,
				&priv->main_thread, "btmrvl_main_service");

	priv->btmrvl_dev.card = card;
	priv->btmrvl_dev.tx_dnld_rdy = true;

	return priv;
636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654

err_adapter:
	kfree(priv);

err_priv:
	return NULL;
}
EXPORT_SYMBOL_GPL(btmrvl_add_card);

int btmrvl_remove_card(struct btmrvl_private *priv)
{
	struct hci_dev *hdev;

	hdev = priv->btmrvl_dev.hcidev;

	wake_up_interruptible(&priv->adapter->cmd_wait_q);

	kthread_stop(priv->main_thread.task);

655 656 657 658
#ifdef CONFIG_DEBUG_FS
	btmrvl_debugfs_remove(hdev);
#endif

659 660 661 662 663 664 665 666 667 668 669 670 671 672 673
	hci_unregister_dev(hdev);

	hci_free_dev(hdev);

	priv->btmrvl_dev.hcidev = NULL;

	btmrvl_free_adapter(priv);

	kfree(priv);

	return 0;
}
EXPORT_SYMBOL_GPL(btmrvl_remove_card);

MODULE_AUTHOR("Marvell International Ltd.");
674
MODULE_DESCRIPTION("Marvell Bluetooth driver ver " VERSION);
675 676
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL v2");