C++ set_bit函数代码示例

static void pasemi_free_rx_chan(int chan)
{
	BUG_ON(test_bit(chan, rxch_free));
	set_bit(chan, rxch_free);
}

/*-------------------------------------------------------------------------*/
void usbnet_pause_rx(struct usbnet *dev)
{
	set_bit(EVENT_RX_PAUSED, &dev->flags);

	netif_dbg(dev, rx_status, dev->net, "paused rx queue enabled\n");
}

DLLIMPORT
#endif
int sidp_seq_negotiation_host(struct sidpconn *conn) {
	struct neg_data neg_data;

	/* Check if the connection is initiated */
	if (!test_bit(&conn->status_flags, SIDP_INITIATED_FL))
		return -1;

	/* Check if the connection is authenticated */
	if (!test_bit(&conn->status_flags, SIDP_AUTHENTICATED_FL))
		return -2;

	/* Receive support flags of the remote host */
	if (sidp_seq_negotiation_pkt_recv(conn, &neg_data) < 0)
		return -3;

	neg_data.flags = ntohl(neg_data.flags);

	/* Cross support flags of both end-points */
	neg_data.flags &= conn->support_flags;

	neg_data.flags = htonl(neg_data.flags);

	/* Send data to the remote host */
	if (sidp_seq_negotiation_pkt_send(conn, &neg_data) < 0)
		return -4;

	neg_data.flags = ntohl(neg_data.flags);

	/* Test compression negotiation */
	if (test_bit(&neg_data.flags, SIDP_SUPPORT_COMPRESS_LZO_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_COMPRESS_LZO_FL);
	} else if (test_bit(&neg_data.flags, SIDP_SUPPORT_COMPRESS_FASTLZ_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_COMPRESS_FASTLZ_FL);
	} else if (test_bit(&neg_data.flags, SIDP_SUPPORT_COMPRESS_ZLIB_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_COMPRESS_ZLIB_FL);
	} else {
		return -5;
	}

	/* Test encryption negotiation */
	if (test_bit(&neg_data.flags, SIDP_SUPPORT_CIPHER_XSALSA20_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_CIPHER_XSALSA20_FL);
	} else if (test_bit(&neg_data.flags, SIDP_SUPPORT_CIPHER_CHACHA_AVX_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_CIPHER_CHACHA_AVX_FL);
	} else if (test_bit(&neg_data.flags, SIDP_SUPPORT_CIPHER_CHACHA_AVX2_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_CIPHER_CHACHA_AVX2_FL);
	} else if (test_bit(&neg_data.flags, SIDP_SUPPORT_CIPHER_AES256_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_CIPHER_AES256_FL);
	} else {
		return -6;
	}

	/* Test encapsulation negotiation */
	if (test_bit(&neg_data.flags, SIDP_SUPPORT_ENCAP_DEFAULT_FL)) {
		set_bit(&conn->negotiate_flags, SIDP_NEGOTIATE_ENCAP_DEFAULT_FL);
	} else {
		return -7;
	}

	/* Set status to negotiated */
	set_bit(&conn->status_flags, SIDP_NEGOTIATED_FL);

	return 0;
}

static int ohci_pci_resume (struct usb_hcd *hcd)
{
    set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
    ohci_finish_controller_resume(hcd);
    return 0;
}

static void recover_prep(void *arg)
{
	struct mddev *mddev = arg;
	struct md_cluster_info *cinfo = mddev->cluster_info;
	set_bit(MD_CLUSTER_SUSPEND_READ_BALANCING, &cinfo->state);
}

static int gather_all_resync_info(struct mddev *mddev, int total_slots)
{
	struct md_cluster_info *cinfo = mddev->cluster_info;
	int i, ret = 0;
	struct dlm_lock_resource *bm_lockres;
	struct suspend_info *s;
	char str[64];
	sector_t lo, hi;


	for (i = 0; i < total_slots; i++) {
		memset(str, '\0', 64);
		snprintf(str, 64, "bitmap%04d", i);
		bm_lockres = lockres_init(mddev, str, NULL, 1);
		if (!bm_lockres)
			return -ENOMEM;
		if (i == (cinfo->slot_number - 1)) {
			lockres_free(bm_lockres);
			continue;
		}

		bm_lockres->flags |= DLM_LKF_NOQUEUE;
		ret = dlm_lock_sync(bm_lockres, DLM_LOCK_PW);
		if (ret == -EAGAIN) {
			memset(bm_lockres->lksb.sb_lvbptr, '\0', LVB_SIZE);
			s = read_resync_info(mddev, bm_lockres);
			if (s) {
				pr_info("%s:%d Resync[%llu..%llu] in progress on %d\n",
						__func__, __LINE__,
						(unsigned long long) s->lo,
						(unsigned long long) s->hi, i);
				spin_lock_irq(&cinfo->suspend_lock);
				s->slot = i;
				list_add(&s->list, &cinfo->suspend_list);
				spin_unlock_irq(&cinfo->suspend_lock);
			}
			ret = 0;
			lockres_free(bm_lockres);
			continue;
		}
		if (ret) {
			lockres_free(bm_lockres);
			goto out;
		}

		/* Read the disk bitmap sb and check if it needs recovery */
		ret = bitmap_copy_from_slot(mddev, i, &lo, &hi, false);
		if (ret) {
			pr_warn("md-cluster: Could not gather bitmaps from slot %d", i);
			lockres_free(bm_lockres);
			continue;
		}
		if ((hi > 0) && (lo < mddev->recovery_cp)) {
			set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
			mddev->recovery_cp = lo;
			md_check_recovery(mddev);
		}

		dlm_unlock_sync(bm_lockres);
		lockres_free(bm_lockres);
	}
out:
	return ret;
}

//.........这里部分代码省略.........
		cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 3, s->handle, 4, 1);

		/*
		 * Audio related reset according to
		 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
		 */
		if (atomic_read(&cx->ana_capturing) == 0)
			cx18_vapi(cx, CX18_CPU_SET_MISC_PARAMETERS, 2,
				  s->handle, 12);

		/*
		 * Number of lines for Field 1 & Field 2 according to
		 * Documentation/video4linux/cx2341x/fw-encoder-api.txt
		 * Field 1 is 312 for 625 line systems in BT.656
		 * Field 2 is 313 for 625 line systems in BT.656
		 */
		cx18_vapi(cx, CX18_CPU_SET_CAPTURE_LINE_NO, 3,
			  s->handle, 312, 313);

		if (cx->v4l2_cap & V4L2_CAP_VBI_CAPTURE)
			cx18_vbi_setup(s);

		/*
		 * Select to receive I, P, and B frame index entries, if the
		 * index stream is enabled.  Otherwise disable index entry
		 * generation.
		 */
		s_idx = &cx->streams[CX18_ENC_STREAM_TYPE_IDX];
		cx18_vapi_result(cx, data, CX18_CPU_SET_INDEXTABLE, 2,
				 s->handle, cx18_stream_enabled(s_idx) ? 7 : 0);

		/* Call out to the common CX2341x API setup for user controls */
		cx->cxhdl.priv = s;
		cx2341x_handler_setup(&cx->cxhdl);

		/*
		 * When starting a capture and we're set for radio,
		 * ensure the video is muted, despite the user control.
		 */
		if (!cx->cxhdl.video_mute &&
		    test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
			cx18_vapi(cx, CX18_CPU_SET_VIDEO_MUTE, 2, s->handle,
			  (v4l2_ctrl_g_ctrl(cx->cxhdl.video_mute_yuv) << 8) | 1);

		/* Enable the Video Format Converter for UYVY 4:2:2 support,
		 * rather than the default HM12 Macroblovk 4:2:0 support.
		 */
		if (captype == CAPTURE_CHANNEL_TYPE_YUV) {
			if (s->pixelformat == V4L2_PIX_FMT_UYVY)
				cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
					s->handle, 1);
			else
				/* If in doubt, default to HM12 */
				cx18_vapi(cx, CX18_CPU_SET_VFC_PARAM, 2,
					s->handle, 0);
		}
	}

	if (atomic_read(&cx->tot_capturing) == 0) {
		cx2341x_handler_set_busy(&cx->cxhdl, 1);
		clear_bit(CX18_F_I_EOS, &cx->i_flags);
		cx18_write_reg(cx, 7, CX18_DSP0_INTERRUPT_MASK);
	}

	cx18_vapi(cx, CX18_CPU_DE_SET_MDL_ACK, 3, s->handle,
		(void __iomem *)&cx->scb->cpu_mdl_ack[s->type][0] - cx->enc_mem,
		(void __iomem *)&cx->scb->cpu_mdl_ack[s->type][1] - cx->enc_mem);

	/* Init all the cpu_mdls for this stream */
	cx18_stream_configure_mdls(s);
	_cx18_stream_load_fw_queue(s);

	/* begin_capture */
	if (cx18_vapi(cx, CX18_CPU_CAPTURE_START, 1, s->handle)) {
		CX18_DEBUG_WARN("Error starting capture!\n");
		/* Ensure we're really not capturing before releasing MDLs */
		set_bit(CX18_F_S_STOPPING, &s->s_flags);
		if (s->type == CX18_ENC_STREAM_TYPE_MPG)
			cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 2, s->handle, 1);
		else
			cx18_vapi(cx, CX18_CPU_CAPTURE_STOP, 1, s->handle);
		clear_bit(CX18_F_S_STREAMING, &s->s_flags);
		/* FIXME - CX18_F_S_STREAMOFF as well? */
		cx18_vapi(cx, CX18_CPU_DE_RELEASE_MDL, 1, s->handle);
		cx18_vapi(cx, CX18_DESTROY_TASK, 1, s->handle);
		s->handle = CX18_INVALID_TASK_HANDLE;
		clear_bit(CX18_F_S_STOPPING, &s->s_flags);
		if (atomic_read(&cx->tot_capturing) == 0) {
			set_bit(CX18_F_I_EOS, &cx->i_flags);
			cx18_write_reg(cx, 5, CX18_DSP0_INTERRUPT_MASK);
		}
		return -EINVAL;
	}

	/* you're live! sit back and await interrupts :) */
	if (captype != CAPTURE_CHANNEL_TYPE_TS)
		atomic_inc(&cx->ana_capturing);
	atomic_inc(&cx->tot_capturing);
	return 0;
}

//.........这里部分代码省略.........

	if (iscsi_host_add(shost, NULL))
		goto free_host;

	cls_session = iscsi_session_setup(&iscsi_sw_tcp_transport, shost,
					  cmds_max, 0,
					  sizeof(struct iscsi_tcp_task) +
					  sizeof(struct iscsi_sw_tcp_hdrbuf),
					  initial_cmdsn, 0);
	if (!cls_session)
		goto remove_host;
	session = cls_session->dd_data;
	tcp_sw_host = iscsi_host_priv(shost);
	tcp_sw_host->session = session;

	shost->can_queue = session->scsi_cmds_max;
	if (iscsi_tcp_r2tpool_alloc(session))
		goto remove_session;
	return cls_session;

remove_session:
	iscsi_session_teardown(cls_session);
remove_host:
	iscsi_host_remove(shost);
free_host:
	iscsi_host_free(shost);
	return NULL;
}

static void iscsi_sw_tcp_session_destroy(struct iscsi_cls_session *cls_session)
{
	struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);

	iscsi_tcp_r2tpool_free(cls_session->dd_data);
	iscsi_session_teardown(cls_session);

	iscsi_host_remove(shost);
	iscsi_host_free(shost);
}

static mode_t iscsi_sw_tcp_attr_is_visible(int param_type, int param)
{
	switch (param_type) {
	case ISCSI_HOST_PARAM:
		switch (param) {
		case ISCSI_HOST_PARAM_NETDEV_NAME:
		case ISCSI_HOST_PARAM_HWADDRESS:
		case ISCSI_HOST_PARAM_IPADDRESS:
		case ISCSI_HOST_PARAM_INITIATOR_NAME:
			return S_IRUGO;
		default:
			return 0;
		}
	case ISCSI_PARAM:
		switch (param) {
		case ISCSI_PARAM_MAX_RECV_DLENGTH:
		case ISCSI_PARAM_MAX_XMIT_DLENGTH:
		case ISCSI_PARAM_HDRDGST_EN:
		case ISCSI_PARAM_DATADGST_EN:
		case ISCSI_PARAM_CONN_ADDRESS:
		case ISCSI_PARAM_CONN_PORT:
		case ISCSI_PARAM_EXP_STATSN:
		case ISCSI_PARAM_PERSISTENT_ADDRESS:
		case ISCSI_PARAM_PERSISTENT_PORT:
		case ISCSI_PARAM_PING_TMO:
		case ISCSI_PARAM_RECV_TMO:
		case ISCSI_PARAM_INITIAL_R2T_EN:
		case ISCSI_PARAM_MAX_R2T:
		case ISCSI_PARAM_IMM_DATA_EN:
		case ISCSI_PARAM_FIRST_BURST:
		case ISCSI_PARAM_MAX_BURST:
		case ISCSI_PARAM_PDU_INORDER_EN:
		case ISCSI_PARAM_DATASEQ_INORDER_EN:
		case ISCSI_PARAM_ERL:
		case ISCSI_PARAM_TARGET_NAME:
		case ISCSI_PARAM_TPGT:
		case ISCSI_PARAM_USERNAME:
		case ISCSI_PARAM_PASSWORD:
		case ISCSI_PARAM_USERNAME_IN:
		case ISCSI_PARAM_PASSWORD_IN:
		case ISCSI_PARAM_FAST_ABORT:
		case ISCSI_PARAM_ABORT_TMO:
		case ISCSI_PARAM_LU_RESET_TMO:
		case ISCSI_PARAM_TGT_RESET_TMO:
		case ISCSI_PARAM_IFACE_NAME:
		case ISCSI_PARAM_INITIATOR_NAME:
			return S_IRUGO;
		default:
			return 0;
		}
	}

	return 0;
}

static int iscsi_sw_tcp_slave_alloc(struct scsi_device *sdev)
{
	set_bit(QUEUE_FLAG_BIDI, &sdev->request_queue->queue_flags);
	return 0;
}

//.........这里部分代码省略.........
		queue->buf_dva[index][2] = vb2->plane_addr(vb, 1);
		queue->buf_dva[index][3] = vb2->plane_addr(vb, 3);
	} else {
		for (i = 0; i < vb->num_planes; i++)
			queue->buf_dva[index][i] = vb2->plane_addr(vb, i);
	}

	frame = &framemgr->frame[index];

	/* uninitialized frame need to get info */
	if (frame->memory == FRAME_UNI_MEM)
		goto set_info;

	/* plane count check */
	if (frame->planes != vb->num_planes) {
		err("plane count is changed(%08X != %08X)",
			frame->planes, vb->num_planes);
		ret = -EINVAL;
		goto exit;
	}

	/* plane address check */
	for (i = 0; i < frame->planes; i++) {
		if (frame->dvaddr_buffer[i] != queue->buf_dva[index][i]) {
			err("buffer %d plane %d is changed(%08X != %08X)",
				index, i,
				frame->dvaddr_buffer[i],
				queue->buf_dva[index][i]);
			ret = -EINVAL;
			goto exit;
		}
	}

	goto exit;

set_info:
	if (test_bit(FIMC_IS_QUEUE_BUFFER_PREPARED, &queue->state)) {
		err("already prepared but new index(%d) is came", index);
		ret = -EINVAL;
		goto exit;
	}

	frame->vb = vb;
	frame->planes = vb->num_planes;
	spare = frame->planes - 1;

	for (i = 0; i < frame->planes; i++) {
		frame->dvaddr_buffer[i] = queue->buf_dva[index][i];
#ifdef PRINT_BUFADDR
		info("%04X %d.%d %08X\n", framemgr->id, index, i, frame->dvaddr_buffer[i]);
#endif
	}

	if (framemgr->id & FRAMEMGR_ID_SHOT) {
		ext_size = sizeof(struct camera2_shot_ext) - sizeof(struct camera2_shot);

		/* Create Kvaddr for Metadata */
		queue->buf_kva[index][spare] = vb2->plane_kvaddr(vb, spare);
		if (!queue->buf_kva[index][spare]) {
			err("plane_kvaddr is fail(%08X)", framemgr->id);
			ret = -EINVAL;
			goto exit;
		}

		frame->dvaddr_shot = queue->buf_dva[index][spare] + ext_size;
		frame->kvaddr_shot = queue->buf_kva[index][spare] + ext_size;
		frame->cookie_shot = (u32)vb2_plane_cookie(vb, spare);
		frame->shot = (struct camera2_shot *)frame->kvaddr_shot;
		frame->shot_ext = (struct camera2_shot_ext *)queue->buf_kva[index][spare];
		frame->shot_size = queue->framecfg.size[spare] - ext_size;
#ifdef MEASURE_TIME
		frame->tzone = (struct timeval *)frame->shot_ext->timeZone;
#endif
	} else {
		/* Create Kvaddr for frame sync */
		queue->buf_kva[index][spare] = vb2->plane_kvaddr(vb, spare);
		if (!queue->buf_kva[index][spare]) {
			err("plane_kvaddr is fail(%08X)", framemgr->id);
			ret = -EINVAL;
			goto exit;
		}

		frame->stream = (struct camera2_stream *)queue->buf_kva[index][spare];
		frame->stream->address = queue->buf_kva[index][spare];
		frame->stream_size = queue->framecfg.size[spare];
	}

	frame->memory = FRAME_INI_MEM;

	queue->buf_refcount++;

	if (queue->buf_rdycount == queue->buf_refcount)
		set_bit(FIMC_IS_QUEUE_BUFFER_READY, &queue->state);

	if (queue->buf_maxcount == queue->buf_refcount)
		set_bit(FIMC_IS_QUEUE_BUFFER_PREPARED, &queue->state);

exit:
	return ret;
}

//.........这里部分代码省略.........
                           completion later */
			BUFFER_TRACE(bh, "ph3: file as descriptor");
			journal_file_buffer(descriptor, commit_transaction,
					BJ_LogCtl);
		}

		/* Where is the buffer to be written? */

		err = journal_next_log_block(journal, &blocknr);
		/* If the block mapping failed, just abandon the buffer
		   and repeat this loop: we'll fall into the
		   refile-on-abort condition above. */
		if (err) {
			__journal_abort_hard(journal);
			continue;
		}

		/*
		 * start_this_handle() uses t_outstanding_credits to determine
		 * the free space in the log, but this counter is changed
		 * by journal_next_log_block() also.
		 */
		commit_transaction->t_outstanding_credits--;

		/* Bump b_count to prevent truncate from stumbling over
                   the shadowed buffer!  @@@ This can go if we ever get
                   rid of the BJ_IO/BJ_Shadow pairing of buffers. */
		atomic_inc(&jh2bh(jh)->b_count);

		/* Make a temporary IO buffer with which to write it out
                   (this will requeue both the metadata buffer and the
                   temporary IO buffer). new_bh goes on BJ_IO*/

		set_bit(BH_JWrite, &jh2bh(jh)->b_state);
		/*
		 * akpm: journal_write_metadata_buffer() sets
		 * new_bh->b_transaction to commit_transaction.
		 * We need to clean this up before we release new_bh
		 * (which is of type BJ_IO)
		 */
		JBUFFER_TRACE(jh, "ph3: write metadata");
		flags = journal_write_metadata_buffer(commit_transaction,
						      jh, &new_jh, blocknr);
		set_bit(BH_JWrite, &jh2bh(new_jh)->b_state);
		wbuf[bufs++] = jh2bh(new_jh);

		/* Record the new block's tag in the current descriptor
                   buffer */

		tag_flag = 0;
		if (flags & 1)
			tag_flag |= JFS_FLAG_ESCAPE;
		if (!first_tag)
			tag_flag |= JFS_FLAG_SAME_UUID;

		tag = (journal_block_tag_t *) tagp;
		tag->t_blocknr = cpu_to_be32(jh2bh(jh)->b_blocknr);
		tag->t_flags = cpu_to_be32(tag_flag);
		tagp += sizeof(journal_block_tag_t);
		space_left -= sizeof(journal_block_tag_t);

		if (first_tag) {
			memcpy (tagp, journal->j_uuid, 16);
			tagp += 16;
			space_left -= 16;
			first_tag = 0;

static int tegra_ehci_hub_control(
	struct usb_hcd	*hcd,
	u16		typeReq,
	u16		wValue,
	u16		wIndex,
	char		*buf,
	u16		wLength
)
{
	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
	struct tegra_ehci_hcd *tegra = (struct tegra_ehci_hcd *)ehci->priv;
	u32 __iomem	*status_reg;
	u32		temp;
	unsigned long	flags;
	int		retval = 0;

	status_reg = &ehci->regs->port_status[(wIndex & 0xff) - 1];

	spin_lock_irqsave(&ehci->lock, flags);

	if (typeReq == GetPortStatus) {
		temp = ehci_readl(ehci, status_reg);
		if (tegra->port_resuming && !(temp & PORT_SUSPEND)) {
			/* Resume completed, re-enable disconnect detection */
			tegra->port_resuming = 0;
			tegra_usb_phy_postresume(hcd->usb_phy);
		}
	}

	else if (typeReq == SetPortFeature && wValue == USB_PORT_FEAT_SUSPEND) {
		temp = ehci_readl(ehci, status_reg);
		if ((temp & PORT_PE) == 0 || (temp & PORT_RESET) != 0) {
			retval = -EPIPE;
			goto done;
		}

		temp &= ~(PORT_RWC_BITS | PORT_WKCONN_E);
		temp |= PORT_WKDISC_E | PORT_WKOC_E;
		ehci_writel(ehci, temp | PORT_SUSPEND, status_reg);

		/*
		 * If a transaction is in progress, there may be a delay in
		 * suspending the port. Poll until the port is suspended.
		 */
		if (ehci_handshake(ehci, status_reg, PORT_SUSPEND,
						PORT_SUSPEND, 5000))
			pr_err("%s: timeout waiting for SUSPEND\n", __func__);

		set_bit((wIndex & 0xff) - 1, &ehci->suspended_ports);
		goto done;
	}

	/* For USB1 port we need to issue Port Reset twice internally */
	if (tegra->needs_double_reset &&
	   (typeReq == SetPortFeature && wValue == USB_PORT_FEAT_RESET)) {
		spin_unlock_irqrestore(&ehci->lock, flags);
		return tegra_ehci_internal_port_reset(ehci, status_reg);
	}

	/*
	 * Tegra host controller will time the resume operation to clear the bit
	 * when the port control state switches to HS or FS Idle. This behavior
	 * is different from EHCI where the host controller driver is required
	 * to set this bit to a zero after the resume duration is timed in the
	 * driver.
	 */
	else if (typeReq == ClearPortFeature &&
					wValue == USB_PORT_FEAT_SUSPEND) {
		temp = ehci_readl(ehci, status_reg);
		if ((temp & PORT_RESET) || !(temp & PORT_PE)) {
			retval = -EPIPE;
			goto done;
		}

		if (!(temp & PORT_SUSPEND))
			goto done;

		/* Disable disconnect detection during port resume */
		tegra_usb_phy_preresume(hcd->usb_phy);

		ehci->reset_done[wIndex-1] = jiffies + msecs_to_jiffies(25);

		temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
		/* start resume signalling */
		ehci_writel(ehci, temp | PORT_RESUME, status_reg);
		set_bit(wIndex-1, &ehci->resuming_ports);

		spin_unlock_irqrestore(&ehci->lock, flags);
		msleep(20);
		spin_lock_irqsave(&ehci->lock, flags);

		/* Poll until the controller clears RESUME and SUSPEND */
		if (ehci_handshake(ehci, status_reg, PORT_RESUME, 0, 2000))
			pr_err("%s: timeout waiting for RESUME\n", __func__);
		if (ehci_handshake(ehci, status_reg, PORT_SUSPEND, 0, 2000))
			pr_err("%s: timeout waiting for SUSPEND\n", __func__);

		ehci->reset_done[wIndex-1] = 0;
		clear_bit(wIndex-1, &ehci->resuming_ports);

//.........这里部分代码省略.........

/*
 * remove a file from an AFS filesystem
 */
static int afs_unlink(struct inode *dir, struct dentry *dentry)
{
	struct afs_vnode *dvnode, *vnode;
	struct key *key;
	int ret;

	dvnode = AFS_FS_I(dir);

	_enter("{%x:%u},{%s}",
	       dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name);

	ret = -ENAMETOOLONG;
	if (dentry->d_name.len >= AFSNAMEMAX)
		goto error;

	key = afs_request_key(dvnode->volume->cell);
	if (IS_ERR(key)) {
		ret = PTR_ERR(key);
		goto error;
	}

	if (dentry->d_inode) {
		vnode = AFS_FS_I(dentry->d_inode);

		/* make sure we have a callback promise on the victim */
		ret = afs_validate(vnode, key);
		if (ret < 0)
			goto error;
	}

	ret = afs_vnode_remove(dvnode, key, dentry->d_name.name, false);
	if (ret < 0)
		goto remove_error;

	if (dentry->d_inode) {
		/* if the file wasn't deleted due to excess hard links, the
		 * fileserver will break the callback promise on the file - if
		 * it had one - before it returns to us, and if it was deleted,
		 * it won't
		 *
		 * however, if we didn't have a callback promise outstanding,
		 * or it was outstanding on a different server, then it won't
		 * break it either...
		 */
		vnode = AFS_FS_I(dentry->d_inode);
		if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
			_debug("AFS_VNODE_DELETED");
		if (test_bit(AFS_VNODE_CB_BROKEN, &vnode->flags))
			_debug("AFS_VNODE_CB_BROKEN");
		set_bit(AFS_VNODE_CB_BROKEN, &vnode->flags);
		ret = afs_validate(vnode, key);
		_debug("nlink %d [val %d]", vnode->vfs_inode.i_nlink, ret);
	}

	key_put(key);
	_leave(" = 0");
	return 0;

remove_error:
	key_put(key);
error:
	_leave(" = %d", ret);
	return ret;
}

static int join(struct mddev *mddev, int nodes)
{
	struct md_cluster_info *cinfo;
	int ret, ops_rv;
	char str[64];

	cinfo = kzalloc(sizeof(struct md_cluster_info), GFP_KERNEL);
	if (!cinfo)
		return -ENOMEM;

	INIT_LIST_HEAD(&cinfo->suspend_list);
	spin_lock_init(&cinfo->suspend_lock);
	init_completion(&cinfo->completion);
	set_bit(MD_CLUSTER_BEGIN_JOIN_CLUSTER, &cinfo->state);
	init_waitqueue_head(&cinfo->wait);
	mutex_init(&cinfo->recv_mutex);

	mddev->cluster_info = cinfo;

	memset(str, 0, 64);
	sprintf(str, "%pU", mddev->uuid);
	ret = dlm_new_lockspace(str, mddev->bitmap_info.cluster_name,
				DLM_LSFL_FS, LVB_SIZE,
				&md_ls_ops, mddev, &ops_rv, &cinfo->lockspace);
	if (ret)
		goto err;
	wait_for_completion(&cinfo->completion);
	if (nodes < cinfo->slot_number) {
		pr_err("md-cluster: Slot allotted(%d) is greater than available slots(%d).",
			cinfo->slot_number, nodes);
		ret = -ERANGE;
		goto err;
	}
	/* Initiate the communication resources */
	ret = -ENOMEM;
	cinfo->recv_thread = md_register_thread(recv_daemon, mddev, "cluster_recv");
	if (!cinfo->recv_thread) {
		pr_err("md-cluster: cannot allocate memory for recv_thread!\n");
		goto err;
	}
	cinfo->message_lockres = lockres_init(mddev, "message", NULL, 1);
	if (!cinfo->message_lockres)
		goto err;
	cinfo->token_lockres = lockres_init(mddev, "token", NULL, 0);
	if (!cinfo->token_lockres)
		goto err;
	cinfo->no_new_dev_lockres = lockres_init(mddev, "no-new-dev", NULL, 0);
	if (!cinfo->no_new_dev_lockres)
		goto err;

	ret = dlm_lock_sync(cinfo->token_lockres, DLM_LOCK_EX);
	if (ret) {
		ret = -EAGAIN;
		pr_err("md-cluster: can't join cluster to avoid lock issue\n");
		goto err;
	}
	cinfo->ack_lockres = lockres_init(mddev, "ack", ack_bast, 0);
	if (!cinfo->ack_lockres)
		goto err;
	/* get sync CR lock on ACK. */
	if (dlm_lock_sync(cinfo->ack_lockres, DLM_LOCK_CR))
		pr_err("md-cluster: failed to get a sync CR lock on ACK!(%d)\n",
				ret);
	dlm_unlock_sync(cinfo->token_lockres);
	/* get sync CR lock on no-new-dev. */
	if (dlm_lock_sync(cinfo->no_new_dev_lockres, DLM_LOCK_CR))
		pr_err("md-cluster: failed to get a sync CR lock on no-new-dev!(%d)\n", ret);


	pr_info("md-cluster: Joined cluster %s slot %d\n", str, cinfo->slot_number);
	snprintf(str, 64, "bitmap%04d", cinfo->slot_number - 1);
	cinfo->bitmap_lockres = lockres_init(mddev, str, NULL, 1);
	if (!cinfo->bitmap_lockres)
		goto err;
	if (dlm_lock_sync(cinfo->bitmap_lockres, DLM_LOCK_PW)) {
		pr_err("Failed to get bitmap lock\n");
		ret = -EINVAL;
		goto err;
	}

	cinfo->resync_lockres = lockres_init(mddev, "resync", NULL, 0);
	if (!cinfo->resync_lockres)
		goto err;

	return 0;
err:
	md_unregister_thread(&cinfo->recovery_thread);
	md_unregister_thread(&cinfo->recv_thread);
	lockres_free(cinfo->message_lockres);
	lockres_free(cinfo->token_lockres);
	lockres_free(cinfo->ack_lockres);
	lockres_free(cinfo->no_new_dev_lockres);
	lockres_free(cinfo->resync_lockres);
	lockres_free(cinfo->bitmap_lockres);
	if (cinfo->lockspace)
		dlm_release_lockspace(cinfo->lockspace, 2);
	mddev->cluster_info = NULL;
	kfree(cinfo);
	return ret;
}

/*
 * driver allocation handlers.
 */
int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
{
	int retval = -ENOMEM;

	mutex_init(&rt2x00dev->csr_mutex);

	set_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags);

	/*
	 * Make room for rt2x00_intf inside the per-interface
	 * structure ieee80211_vif.
	 */
	rt2x00dev->hw->vif_data_size = sizeof(struct rt2x00_intf);

	/*
	 * Determine which operating modes are supported, all modes
	 * which require beaconing, depend on the availability of
	 * beacon entries.
	 */
	rt2x00dev->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
	if (rt2x00dev->ops->bcn->entry_num > 0)
		rt2x00dev->hw->wiphy->interface_modes |=
		    BIT(NL80211_IFTYPE_ADHOC) |
		    BIT(NL80211_IFTYPE_AP) |
		    BIT(NL80211_IFTYPE_MESH_POINT) |
		    BIT(NL80211_IFTYPE_WDS);

	/*
	 * Initialize configuration work.
	 */
	INIT_WORK(&rt2x00dev->intf_work, rt2x00lib_intf_scheduled);

	/*
	 * Let the driver probe the device to detect the capabilities.
	 */
	retval = rt2x00dev->ops->lib->probe_hw(rt2x00dev);
	if (retval) {
		ERROR(rt2x00dev, "Failed to allocate device.\n");
		goto exit;
	}

	/*
	 * Allocate queue array.
	 */
	retval = rt2x00queue_allocate(rt2x00dev);
	if (retval)
		goto exit;

	/*
	 * Initialize ieee80211 structure.
	 */
	retval = rt2x00lib_probe_hw(rt2x00dev);
	if (retval) {
		ERROR(rt2x00dev, "Failed to initialize hw.\n");
		goto exit;
	}

	/*
	 * Register extra components.
	 */
	rt2x00link_register(rt2x00dev);
	rt2x00leds_register(rt2x00dev);
	rt2x00debug_register(rt2x00dev);

	return 0;

exit:
	rt2x00lib_remove_dev(rt2x00dev);

	return retval;
}

//.........这里部分代码省略.........
	skb = btbcm_read_verbose_config(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
	kfree_skb(skb);

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
	kfree_skb(skb);

	switch ((rev & 0xf000) >> 12) {
	case 0:
	case 3:
		for (i = 0; bcm_uart_subver_table[i].name; i++) {
			if (subver == bcm_uart_subver_table[i].subver) {
				hw_name = bcm_uart_subver_table[i].name;
				break;
			}
		}

		snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
			 hw_name ? : "BCM");
		break;
	case 1:
	case 2:
		/* Read USB Product Info */
		skb = btbcm_read_usb_product(hdev);
		if (IS_ERR(skb))
			return PTR_ERR(skb);

		vid = get_unaligned_le16(skb->data + 1);
		pid = get_unaligned_le16(skb->data + 3);
		kfree_skb(skb);

		for (i = 0; bcm_usb_subver_table[i].name; i++) {
			if (subver == bcm_usb_subver_table[i].subver) {
				hw_name = bcm_usb_subver_table[i].name;
				break;
			}
		}

		snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
			 hw_name ? : "BCM", vid, pid);
		break;
	default:
		return 0;
	}

	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
		hw_name ? : "BCM", (subver & 0xe000) >> 13,
		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);

	err = request_firmware(&fw, fw_name, &hdev->dev);
	if (err < 0) {
		BT_INFO("%s: BCM: Patch %s not found", hdev->name, fw_name);
		return 0;
	}

	btbcm_patchram(hdev, fw);

	release_firmware(fw);

	/* Reset */
	err = btbcm_reset(hdev);
	if (err)
		return err;

	/* Read Local Version Info */
	skb = btbcm_read_local_version(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	ver = (struct hci_rp_read_local_version *)skb->data;
	rev = le16_to_cpu(ver->hci_rev);
	subver = le16_to_cpu(ver->lmp_subver);
	kfree_skb(skb);

	BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
		hw_name ? : "BCM", (subver & 0xe000) >> 13,
		(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);

	/* Read Local Name */
	skb = btbcm_read_local_name(hdev);
	if (IS_ERR(skb))
		return PTR_ERR(skb);

	BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
	kfree_skb(skb);

	btbcm_check_bdaddr(hdev);

	set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);

	return 0;
}