C++ pr_alert函数代码示例

//.........这里部分代码省略.........

	// (4) Alloc components.
	err = snd_vortex_mixer(chip);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}
	// ADB pcm.
	err = snd_vortex_new_pcm(chip, VORTEX_PCM_ADB, NR_PCM);
	if (err < 0) {
		snd_card_free(card);
		return err;
	}
#ifndef CHIP_AU8820
	// ADB SPDIF
	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_SPDIF, 1)) < 0) {
		snd_card_free(card);
		return err;
	}
	// A3D
	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_A3D, NR_A3D)) < 0) {
		snd_card_free(card);
		return err;
	}
#endif
	/*
	   // ADB I2S
	   if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_I2S, 1)) < 0) {
	   snd_card_free(card);
	   return err;
	   }
	 */
#ifndef CHIP_AU8810
	// WT pcm.
	if ((err = snd_vortex_new_pcm(chip, VORTEX_PCM_WT, NR_WT)) < 0) {
		snd_card_free(card);
		return err;
	}
#endif
	if ((err = snd_vortex_midi(chip)) < 0) {
		snd_card_free(card);
		return err;
	}

	vortex_gameport_register(chip);

#if 0
	if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_VORTEX_SYNTH,
			       sizeof(snd_vortex_synth_arg_t), &wave) < 0
	    || wave == NULL) {
		snd_printk(KERN_ERR "Can't initialize Aureal wavetable synth\n");
	} else {
		snd_vortex_synth_arg_t *arg;

		arg = SNDRV_SEQ_DEVICE_ARGPTR(wave);
		strcpy(wave->name, "Aureal Synth");
		arg->hwptr = vortex;
		arg->index = 1;
		arg->seq_ports = seq_ports[dev];
		arg->max_voices = max_synth_voices[dev];
	}
#endif

	// (5)
	if ((err = pci_read_config_word(pci, PCI_DEVICE_ID,
				  &(chip->device))) < 0) {
		snd_card_free(card);
		return err;
	}	
	if ((err = pci_read_config_word(pci, PCI_VENDOR_ID,
				  &(chip->vendor))) < 0) {
		snd_card_free(card);
		return err;
	}
	chip->rev = pci->revision;
#ifdef CHIP_AU8830
	if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
		pr_alert(
		       "vortex: The revision (%x) of your card has not been seen before.\n",
		       chip->rev);
		pr_alert(
		       "vortex: Please email the results of 'lspci -vv' to [email protected]\n");
		snd_card_free(card);
		err = -ENODEV;
		return err;
	}
#endif

	// (6)
	if ((err = snd_card_register(card)) < 0) {
		snd_card_free(card);
		return err;
	}
	// (7)
	pci_set_drvdata(pci, card);
	dev++;
	vortex_connect_default(chip, 1);
	vortex_enable_int(chip);
	return 0;
}

long diagchar_ioctl(struct file *filp,
			   unsigned int iocmd, unsigned long ioarg)
{
	int i, j, count_entries = 0, temp;
	int success = -1;
	void *temp_buf;

	DIAG_INFO("%s:%s(parent:%s): tgid=%d\n", __func__,
			current->comm, current->parent->comm, current->tgid);

	if (iocmd == DIAG_IOCTL_COMMAND_REG) {
		struct bindpkt_params_per_process *pkt_params =
			 (struct bindpkt_params_per_process *) ioarg;
		mutex_lock(&driver->diagchar_mutex);
		for (i = 0; i < diag_max_reg; i++) {
			if (driver->table[i].process_id == 0) {
				diag_add_reg(i, pkt_params->params,
						&success, &count_entries);
				if (pkt_params->count > count_entries) {
					pkt_params->params++;
				} else {
					mutex_unlock(&driver->diagchar_mutex);
					return success;
				}
			}
		}
		if (i < diag_threshold_reg) {
			/* Increase table size by amount required */
			diag_max_reg += pkt_params->count -
							 count_entries;
			/* Make sure size doesnt go beyond threshold */
			if (diag_max_reg > diag_threshold_reg) {
				diag_max_reg = diag_threshold_reg;
				pr_info("diag: best case memory allocation\n");
			}
			temp_buf = krealloc(driver->table,
					 diag_max_reg*sizeof(struct
					 diag_master_table), GFP_KERNEL);
			if (!temp_buf) {
				diag_max_reg -= pkt_params->count -
							 count_entries;
				pr_alert("diag: Insufficient memory for reg.");
				mutex_unlock(&driver->diagchar_mutex);
				return 0;
			} else {
				driver->table = temp_buf;
			}
			for (j = i; j < diag_max_reg; j++) {
				diag_add_reg(j, pkt_params->params,
						&success, &count_entries);
				if (pkt_params->count > count_entries) {
					pkt_params->params++;
				} else {
					mutex_unlock(&driver->diagchar_mutex);
					return success;
				}
			}
			mutex_unlock(&driver->diagchar_mutex);
		} else {
			mutex_unlock(&driver->diagchar_mutex);
			pr_err("Max size reached, Pkt Registration failed for"
						" Process %d", current->tgid);
		}
		success = 0;
	} else if (iocmd == DIAG_IOCTL_GET_DELAYED_RSP_ID) {
		struct diagpkt_delay_params *delay_params =
					(struct diagpkt_delay_params *) ioarg;

		if ((delay_params->rsp_ptr) &&
		 (delay_params->size == sizeof(delayed_rsp_id)) &&
				 (delay_params->num_bytes_ptr)) {
			*((uint16_t *)delay_params->rsp_ptr) =
				DIAGPKT_NEXT_DELAYED_RSP_ID(delayed_rsp_id);
			*(delay_params->num_bytes_ptr) = sizeof(delayed_rsp_id);
			success = 0;
		}
	} else if (iocmd == DIAG_IOCTL_LSM_DEINIT) {
		for (i = 0; i < driver->num_clients; i++)
			if (driver->client_map[i].pid == current->tgid)
				break;
		if (i == -1)
			return -EINVAL;
		driver->data_ready[i] |= DEINIT_TYPE;
		wake_up_interruptible(&driver->wait_q);
		success = 1;
	} else if (iocmd == DIAG_IOCTL_SWITCH_LOGGING) {
		mutex_lock(&driver->diagchar_mutex);
		temp = driver->logging_mode;
		driver->logging_mode = (int)ioarg;
		if (driver->logging_mode == UART_MODE)
			driver->logging_mode = MEMORY_DEVICE_MODE;
		driver->logging_process_id = current->tgid;
		mutex_unlock(&driver->diagchar_mutex);
		if (temp == MEMORY_DEVICE_MODE && driver->logging_mode
							== NO_LOGGING_MODE) {
			driver->in_busy_1 = 1;
			driver->in_busy_2 = 1;
			driver->in_busy_qdsp_1 = 1;
			driver->in_busy_qdsp_2 = 1;
			driver->in_busy_wcnss = 1;
//.........这里部分代码省略.........

static int diagchar_open(struct inode *inode, struct file *file)
{
    int i = 0;
    void *temp;

    if (driver) {
        mutex_lock(&driver->diagchar_mutex);

        for (i = 0; i < driver->num_clients; i++)
            if (driver->client_map[i].pid == 0)
                break;

        if (i < driver->num_clients) {
            diag_add_client(i, file);
        } else {
            if (i < threshold_client_limit) {
                driver->num_clients++;
                temp = krealloc(driver->client_map
                                , (driver->num_clients) * sizeof(struct
                                        diag_client_map), GFP_KERNEL);
                if (!temp)
                    goto fail;
                else
                    driver->client_map = temp;
                temp = krealloc(driver->data_ready
                                , (driver->num_clients) * sizeof(int),
                                GFP_KERNEL);
                if (!temp)
                    goto fail;
                else
                    driver->data_ready = temp;
                diag_add_client(i, file);
            } else {
                mutex_unlock(&driver->diagchar_mutex);
                pr_alert("Max client limit for DIAG reached\n");
                pr_info("Cannot open handle %s"
                        " %d", current->comm, current->tgid);
                for (i = 0; i < driver->num_clients; i++)
                    pr_debug("%d) %s PID=%d", i, driver->
                             client_map[i].name,
                             driver->client_map[i].pid);
                return -ENOMEM;
            }
        }
        driver->data_ready[i] = 0x0;
        driver->data_ready[i] |= MSG_MASKS_TYPE;
        driver->data_ready[i] |= EVENT_MASKS_TYPE;
        driver->data_ready[i] |= LOG_MASKS_TYPE;

        if (driver->ref_count == 0)
            diagmem_init(driver);
        driver->ref_count++;
        mutex_unlock(&driver->diagchar_mutex);
        return 0;
    }
    return -ENOMEM;

fail:
    mutex_unlock(&driver->diagchar_mutex);
    driver->num_clients--;
    pr_alert("diag: Insufficient memory for new client");
    return -ENOMEM;
}

static void pm_callback_power_off(struct kbase_device *kbdev)
{
	unsigned int uiCurrentFreqCount;

	volatile int polling_count = 100000;
	volatile int i = 0;

	struct mtk_config *config;

	if (!kbdev)	{
		pr_alert("MALI:	input	parameter	is NULL	\n");
	}

	config = (struct mtk_config	*)kbdev->mtk_config;
	if (!config) {
		pr_alert("MALI:	mtk_config is	NULL \n");
	}

	/// 1. Delay 0.01ms before power off
	for (i=0; i < DELAY_LOOP_COUNT;i++);
	if (DELAY_LOOP_COUNT != i)
	{
		pr_warn("[MALI] power off delay error!\n");
	}

	/// 2. Polling the MFG_DEBUG_REG for checking GPU IDLE before MTCMOS power off (0.1ms)
	MFG_WRITE32(0x3, MFG_DEBUG_CTRL_REG);

	do {
		/// 0x13000184[2]
		/// 1'b1: bus idle
		/// 1'b0: bus busy
		if (MFG_READ32(MFG_DEBUG_STAT_REG) & MFG_BUS_IDLE_BIT)
		{
			/// printk("[MALI]MFG BUS already IDLE! Ready to power off, %d\n", polling_count);
			break;
		}
	} while (polling_count--);

	if (polling_count <=0)
	{
		pr_warn("[MALI]!!!!MFG(GPU) subsys is still BUSY!!!!!, polling_count=%d\n", polling_count);
	}

#if HARD_RESET_AT_POWER_OFF
	/* Cause a GPU hard reset to test whether we have actually idled the GPU
	 * and that we properly reconfigure the GPU on power up.
	 * Usually this would be dangerous, but if the GPU is working correctly it should
	 * be completely safe as the GPU should not be active at this point.
	 * However this is disabled normally because it will most likely interfere with
	 * bus logging etc.
	 */
	//KBASE_TRACE_ADD(kbdev, CORE_GPU_HARD_RESET, NULL, NULL, 0u, 0);
	kbase_os_reg_write(kbdev, GPU_CONTROL_REG(GPU_COMMAND), GPU_COMMAND_HARD_RESET);
	///  Polling the MFG_DEBUG_REG for checking GPU IDLE before MTCMOS power off (0.1ms)
	MFG_WRITE32(0x3, MFG_DEBUG_CTRL_REG);

	do {
		/// 0x13000184[2]
		/// 1'b1: bus idle
		/// 1'b0: bus busy
		if (MFG_READ32(MFG_DEBUG_STAT_REG) & MFG_BUS_IDLE_BIT)
		{
			/// printk("[MALI]MFG BUS already IDLE! Ready to power off, %d\n", polling_count);
			break;
		}
	} while (polling_count--);

	if (polling_count <=0)
	{
		printk("[MALI]!!!!MFG(GPU) subsys is still BUSY!!!!!, polling_count=%d\n", polling_count);
	}

	g_power_off_gpu_freq_idx = mt_gpufreq_get_cur_freq_index(); // record current freq. index.
	//printk("MALI:  GPU power off freq idx : %d\n",g_power_off_gpu_freq_idx );
#if 1
	uiCurrentFreqCount = mt_gpufreq_get_dvfs_table_num();       // get freq. table size
	mt_gpufreq_target(uiCurrentFreqCount-1);                    // set gpu to lowest freq.
#endif

	/* MTK clock modified */
#ifdef CONFIG_MTK_CLKMGR
	disable_clock( MT_CG_MFG_BG3D, "GPU");
	disable_clock( MT_CG_DISP0_SMI_COMMON, "GPU");
#endif

	if(mt6325_upmu_get_swcid() >= PMIC6325_E3_CID_CODE)
	{
		mt_gpufreq_voltage_enable_set(0);
	}

#ifdef ENABLE_COMMON_DVFS
	ged_dvfs_gpu_clock_switch_notify(0);
#endif
	mtk_set_vgpu_power_on_flag(MTK_VGPU_POWER_OFF); // the power status is "power off".
#endif
}

static int diagchar_write(struct file *file, const char __user *buf,
			      size_t count, loff_t *ppos)
{
	int err, ret = 0, pkt_type;
	int length = 0, i;
	struct diag_send_desc_type send = { NULL, NULL, DIAG_STATE_START, 0 };
	struct diag_hdlc_dest_type enc = { NULL, NULL, 0 };
	void *buf_copy = NULL;
	unsigned int payload_size;
#ifdef CONFIG_DIAG_OVER_USB
	if (((driver->logging_mode == USB_MODE) && (!driver->usb_connected)) ||
				(driver->logging_mode == NO_LOGGING_MODE)) {
		/*Drop the diag payload */
		return -EIO;
	}
#endif /* DIAG over USB */
	/* Get the packet type F3/log/event/Pkt response */
	err = copy_from_user((&pkt_type), buf, 4);
	/* First 4 bytes indicate the type of payload - ignore these */
	if (count < 4) {
		pr_err("diag: Client sending short data\n");
		return -EBADMSG;
	}
	payload_size = count - 4;
	if (payload_size > USER_SPACE_DATA) {
		pr_err("diag: Dropping packet, packet payload size crosses 8KB limit. Current payload size %d\n",
				payload_size);
		driver->dropped_count++;
		return -EBADMSG;
	}

	if (pkt_type == DCI_DATA_TYPE) {
		err = copy_from_user(driver->user_space_data, buf + 4,
							 payload_size);
		if (err) {
			pr_alert("diag: copy failed for DCI data\n");
			return DIAG_DCI_SEND_DATA_FAIL;
		}
		err = diag_process_dci_client(driver->user_space_data,
							payload_size);
		return err;
	}
	if (pkt_type == USER_SPACE_LOG_TYPE) {
		err = copy_from_user(driver->user_space_data, buf + 4,
							 payload_size);
		/* Check masks for On-Device logging */
		if (driver->mask_check) {
			if (!mask_request_validate(driver->user_space_data)) {
				pr_alert("diag: mask request Invalid\n");
				return -EFAULT;
			}
		}
		buf = buf + 4;

		diag_printk(1,"diag:%s user space data %d\n",__func__, payload_size);
		for (i = 0; i < payload_size; i++)
			diag_printk(1,"\t %x", *((driver->user_space_data)+i));
#ifdef CONFIG_DIAG_SDIO_PIPE
		/* send masks to 9k too */
		if (driver->sdio_ch) {
			wait_event_interruptible(driver->wait_q,
				 (sdio_write_avail(driver->sdio_ch) >=
					 payload_size));
			if (driver->sdio_ch && (payload_size > 0)) {
				sdio_write(driver->sdio_ch, (void *)
				   (driver->user_space_data), payload_size);
			}
		}
#endif
#ifdef CONFIG_DIAG_BRIDGE_CODE
		/* send masks to 9k too */
		if (driver->hsic_ch && (payload_size > 0)) {
			/* wait sending mask updates if HSIC ch not ready */
			if (driver->in_busy_hsic_write)
				wait_event_interruptible(driver->wait_q,
					(driver->in_busy_hsic_write != 1));
			driver->in_busy_hsic_write = 1;
			driver->in_busy_hsic_read_on_device = 0;
			err = diag_bridge_write(driver->user_space_data,
							 payload_size);
			if (err) {
				pr_err("diag: err sending mask to MDM: %d\n",
									 err);
				/*
				* If the error is recoverable, then clear
				* the write flag, so we will resubmit a
				* write on the next frame.  Otherwise, don't
				* resubmit a write on the next frame.
				*/
				if ((-ESHUTDOWN) != err)
					driver->in_busy_hsic_write = 0;
			}
		}
#endif
		/* send masks to 8k now */
		diag_process_hdlc((void *)(driver->user_space_data),
							 payload_size);
		return 0;
	}

//.........这里部分代码省略.........

static int fdev_init(void)
{
	int result = 0;
	char *name = "firstdev";

	pr_alert("DEVICE:%s\n", name);
	pr_alert("The process is \"%s\" (pid %i)\n",
	       current->comm, current->pid);
	pr_alert("UTS_RELEASE:%s", UTS_RELEASE);
	pr_alert("KERNEL_VERSION:%d", KERNEL_VERSION(2, 6, 10));

	unsigned int firstminor = 0;
	int err;

	err = alloc_chrdev_region(&dev, firstminor, count, name);
	if (!err) {
		pr_alert("alloc_chrdev_region successful.");
		pr_alert("dev_t:%d,Major=%d,Minor=%d",
			dev, MAJOR(dev), MINOR(dev));
	} else {
		pr_alert("alloc_chrdev_region failed.");
	}

	fdev_p = kmalloc_array(count, sizeof(struct fdev), GFP_KERNEL);
	if (!fdev_p) {
		result = -ENOMEM;
		pr_alert("kmalloc fdev_p failed.");
		goto fail;
	} else {
		pr_alert("kmalloc fdev_p successful.");
	}

	memset(fdev_p, 0, count * sizeof(struct fdev));

	int i, major, devno;

	major = MAJOR(dev);
	for (i = 0; i < count; ++i) {
		struct fdev *devp = &fdev_p[i];

		sema_init(&devp->sem, 1);
		devno = MKDEV(major, i);
		devp->major = major;
		devp->minor = i;

		devp->quantum_count = QUANTUM_DEFAULT;
		devp->qset_count = QSET_DEFAULT;

		cdev_init(&devp->cdev, &fops);
		devp->cdev.owner = THIS_MODULE;
		devp->cdev.ops = &fops;
		err = cdev_add(&devp->cdev, devno, 1);
		if (err)
			pr_alert("Error %d adding firstdev %d", err, i);
		else
			pr_alert("Successful adding firstdev %d", i);
	}
	return 0;
fail:
	fdev_exit();
	return result;
}

static int sigd_send(struct atm_vcc *vcc, struct sk_buff *skb)
{
	struct atmsvc_msg *msg;
	struct atm_vcc *session_vcc;
	struct sock *sk;

	msg = (struct atmsvc_msg *) skb->data;
	atomic_sub(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
	vcc = *(struct atm_vcc **) &msg->vcc;
	pr_debug("%d (0x%lx)\n", (int)msg->type, (unsigned long)vcc);
	sk = sk_atm(vcc);

	switch (msg->type) {
	case as_okay:
		sk->sk_err = -msg->reply;
		clear_bit(ATM_VF_WAITING, &vcc->flags);
		if (!*vcc->local.sas_addr.prv && !*vcc->local.sas_addr.pub) {
			vcc->local.sas_family = AF_ATMSVC;
			memcpy(vcc->local.sas_addr.prv,
			       msg->local.sas_addr.prv, ATM_ESA_LEN);
			memcpy(vcc->local.sas_addr.pub,
			       msg->local.sas_addr.pub, ATM_E164_LEN + 1);
		}
		session_vcc = vcc->session ? vcc->session : vcc;
		if (session_vcc->vpi || session_vcc->vci)
			break;
		session_vcc->itf = msg->pvc.sap_addr.itf;
		session_vcc->vpi = msg->pvc.sap_addr.vpi;
		session_vcc->vci = msg->pvc.sap_addr.vci;
		if (session_vcc->vpi || session_vcc->vci)
			session_vcc->qos = msg->qos;
		break;
	case as_error:
		clear_bit(ATM_VF_REGIS, &vcc->flags);
		clear_bit(ATM_VF_READY, &vcc->flags);
		sk->sk_err = -msg->reply;
		clear_bit(ATM_VF_WAITING, &vcc->flags);
		break;
	case as_indicate:
		vcc = *(struct atm_vcc **)&msg->listen_vcc;
		sk = sk_atm(vcc);
		pr_debug("as_indicate!!!\n");
		lock_sock(sk);
		if (sk_acceptq_is_full(sk)) {
			sigd_enq(NULL, as_reject, vcc, NULL, NULL);
			dev_kfree_skb(skb);
			goto as_indicate_complete;
		}
		sk->sk_ack_backlog++;
		skb_queue_tail(&sk->sk_receive_queue, skb);
		pr_debug("waking sk_sleep(sk) 0x%p\n", sk_sleep(sk));
		sk->sk_state_change(sk);
as_indicate_complete:
		release_sock(sk);
		return 0;
	case as_close:
		set_bit(ATM_VF_RELEASED, &vcc->flags);
		vcc_release_async(vcc, msg->reply);
		goto out;
	case as_modify:
		modify_qos(vcc, msg);
		break;
	case as_addparty:
	case as_dropparty:
		sk->sk_err_soft = msg->reply;
					/* < 0 failure, otherwise ep_ref */
		clear_bit(ATM_VF_WAITING, &vcc->flags);
		break;
	default:
		pr_alert("bad message type %d\n", (int)msg->type);
		return -EINVAL;
	}
	sk->sk_state_change(sk);
out:
	dev_kfree_skb(skb);
	return 0;
}

static void ion_test_exit(void)
{
	misc_deregister(&ion_test_dev);
	pr_alert("%s\n", __func__);
}

static long
qfp_fuse_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
	int err = 0;
	struct qfp_fuse_req req;
	u32 fuse_buf[QFP_FUSE_BUF_SIZE];
	u32 *buf = fuse_buf;
	u32 *ptr = NULL;
	int i;

	/* Verify user arguments. */
	if (_IOC_TYPE(cmd) != QFP_FUSE_IOC_MAGIC)
		return -ENOTTY;

	switch (cmd) {
	case QFP_FUSE_IOC_READ:
		if (arg == 0) {
			pr_err("user space arg not supplied\n");
			err = -EFAULT;
			break;
		}

		if (copy_from_user(&req, (void __user *)arg, sizeof(req))) {
			pr_err("Error copying req from user space\n");
			err = -EFAULT;
			break;
		}

		/* Check for limits */
		if (is_usr_req_valid(&req) == false) {
			pr_err("Invalid request\n");
			err = -EINVAL;
			break;
		}

		if (req.size > QFP_FUSE_BUF_SIZE) {
			/* Allocate memory for buffer */
			ptr = kzalloc(req.size * 4, GFP_KERNEL);
			if (ptr == NULL) {
				pr_alert("No memory for data\n");
				err = -ENOMEM;
				break;
			}
			buf = ptr;
		}

		if (mutex_lock_interruptible(&qfp_priv->lock)) {
			err = -ERESTARTSYS;
			break;
		}

		/* Read data */
		for (i = 0; i < req.size; i++)
			buf[i] = readl_relaxed(
				((u32 *) (qfp_priv->base + req.offset)) + i);

		if (copy_to_user((void __user *)req.data, buf, 4*(req.size))) {
			pr_err("Error copying to user space\n");
			err = -EFAULT;
		}

		mutex_unlock(&qfp_priv->lock);
		break;

	case QFP_FUSE_IOC_WRITE:
		if (arg == 0) {
			pr_err("user space arg not supplied\n");
			err = -EFAULT;
			break;
		}

		if (copy_from_user(&req, (void __user *)arg, sizeof(req))) {
			pr_err("Error copying req from user space\n");
			err = -EFAULT;
			break;
		}
		/* Check for limits */
		if (is_usr_req_valid(&req) == false) {
			pr_err("Invalid request\n");
			err = -EINVAL;
			break;
		}

		if (req.size > QFP_FUSE_BUF_SIZE) {
			/* Allocate memory for buffer */
			ptr = kzalloc(req.size * 4, GFP_KERNEL);
			if (ptr == NULL) {
				pr_alert("No memory for data\n");
				err = -ENOMEM;
				break;
			}
			buf = ptr;
		}

		/* Copy user data to local buffer */
		if (copy_from_user(buf, (void __user *)req.data,
				4 * (req.size))) {
			pr_err("Error copying data from user space\n");
			err = -EFAULT;
			break;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	up_read(&mm->mmap_sem);
	return;

/*
 * Something tried to access memory that isn't in our memory map..
 * Fix it, but check if it's kernel or user first..
 */
bad_area:
	up_read(&mm->mmap_sem);

bad_area_nosemaphore:
	/* User mode accesses just cause a SIGSEGV */
	if (user_mode(regs)) {
		if (unhandled_signal(current, SIGSEGV) && printk_ratelimit()) {
			pr_info("%s: unhandled page fault (%d) at 0x%08lx, "
				"cause %ld\n", current->comm, SIGSEGV, address, cause);
			show_regs(regs);
		}
		_exception(SIGSEGV, regs, code, address);
		return;
	}

no_context:
	/* Are we prepared to handle this kernel fault? */
	if (fixup_exception(regs))
		return;

	/*
	 * Oops. The kernel tried to access some bad page. We'll have to
	 * terminate things with extreme prejudice.
	 */
	bust_spinlocks(1);

	pr_alert("Unable to handle kernel %s at virtual address %08lx",
		address < PAGE_SIZE ? "NULL pointer dereference" :
		"paging request", address);
	pr_alert("ea = %08lx, ra = %08lx, cause = %ld\n", regs->ea, regs->ra,
		cause);
	panic("Oops");
	return;

/*
 * We ran out of memory, or some other thing happened to us that made
 * us unable to handle the page fault gracefully.
 */
out_of_memory:
	up_read(&mm->mmap_sem);
	if (is_global_init(tsk)) {
		yield();
		down_read(&mm->mmap_sem);
		goto survive;
	}
	if (!user_mode(regs))
		goto no_context;
	pagefault_out_of_memory();
	return;

do_sigbus:
	up_read(&mm->mmap_sem);

	/* Kernel mode? Handle exceptions or die */
	if (!user_mode(regs))
		goto no_context;

	_exception(SIGBUS, regs, BUS_ADRERR, address);
	return;

/*
 * This routine handles page faults.  It determines the address, and the
 * problem, and then passes it handle_page_fault() for normal DTLB and
 * ITLB issues, and for DMA or SN processor faults when we are in user
 * space.  For the latter, if we're in kernel mode, we just save the
 * interrupt away appropriately and return immediately.  We can't do
 * page faults for user code while in kernel mode.
 */
void do_page_fault(struct pt_regs *regs, int fault_num,
		   unsigned long address, unsigned long write)
{
	int is_page_fault;

#ifdef CONFIG_KPROBES
	/*
	 * This is to notify the fault handler of the kprobes.  The
	 * exception code is redundant as it is also carried in REGS,
	 * but we pass it anyhow.
	 */
	if (notify_die(DIE_PAGE_FAULT, "page fault", regs, -1,
		       regs->faultnum, SIGSEGV) == NOTIFY_STOP)
		return;
#endif

#ifdef __tilegx__
	/*
	 * We don't need early do_page_fault_ics() support, since unlike
	 * Pro we don't need to worry about unlocking the atomic locks.
	 * There is only one current case in GX where we touch any memory
	 * under ICS other than our own kernel stack, and we handle that
	 * here.  (If we crash due to trying to touch our own stack,
	 * we're in too much trouble for C code to help out anyway.)
	 */
	if (write & ~1) {
		unsigned long pc = write & ~1;
		if (pc >= (unsigned long) __start_unalign_asm_code &&
		    pc < (unsigned long) __end_unalign_asm_code) {
			struct thread_info *ti = current_thread_info();
			/*
			 * Our EX_CONTEXT is still what it was from the
			 * initial unalign exception, but now we've faulted
			 * on the JIT page.  We would like to complete the
			 * page fault however is appropriate, and then retry
			 * the instruction that caused the unalign exception.
			 * Our state has been "corrupted" by setting the low
			 * bit in "sp", and stashing r0..r3 in the
			 * thread_info area, so we revert all of that, then
			 * continue as if this were a normal page fault.
			 */
			regs->sp &= ~1UL;
			regs->regs[0] = ti->unalign_jit_tmp[0];
			regs->regs[1] = ti->unalign_jit_tmp[1];
			regs->regs[2] = ti->unalign_jit_tmp[2];
			regs->regs[3] = ti->unalign_jit_tmp[3];
			write &= 1;
		} else {
			pr_alert("%s/%d: ICS set at page fault at %#lx: %#lx\n",
				 current->comm, current->pid, pc, address);
			show_regs(regs);
			do_group_exit(SIGKILL);
			return;
		}
	}
#else
	/* This case should have been handled by do_page_fault_ics(). */
	BUG_ON(write & ~1);
#endif

#if CHIP_HAS_TILE_DMA()
	/*
	 * If it's a DMA fault, suspend the transfer while we're
	 * handling the miss; we'll restart after it's handled.  If we
	 * don't suspend, it's possible that this process could swap
	 * out and back in, and restart the engine since the DMA is
	 * still 'running'.
	 */
	if (fault_num == INT_DMATLB_MISS ||
	    fault_num == INT_DMATLB_ACCESS ||
	    fault_num == INT_DMATLB_MISS_DWNCL ||
	    fault_num == INT_DMATLB_ACCESS_DWNCL) {
		__insn_mtspr(SPR_DMA_CTR, SPR_DMA_CTR__SUSPEND_MASK);
		while (__insn_mfspr(SPR_DMA_USER_STATUS) &
		       SPR_DMA_STATUS__BUSY_MASK)
			;
	}
#endif

	/* Validate fault num and decide if this is a first-time page fault. */
	switch (fault_num) {
	case INT_ITLB_MISS:
	case INT_DTLB_MISS:
#if CHIP_HAS_TILE_DMA()
	case INT_DMATLB_MISS:
	case INT_DMATLB_MISS_DWNCL:
#endif
		is_page_fault = 1;
		break;

	case INT_DTLB_ACCESS:
#if CHIP_HAS_TILE_DMA()
//.........这里部分代码省略.........

long diagchar_ioctl(struct file *filp,
			   unsigned int iocmd, unsigned long ioarg)
{
	int i, j, temp, success = -1;
	unsigned int count_entries = 0, interim_count = 0;
	void *temp_buf;
	uint16_t support_list = 0;
	struct dci_notification_tbl notify_params;

	if (iocmd == DIAG_IOCTL_COMMAND_REG) {
		struct bindpkt_params_per_process pkt_params;
		struct bindpkt_params *params;
		struct bindpkt_params *head_params;
		if (copy_from_user(&pkt_params, (void *)ioarg,
				sizeof(struct bindpkt_params_per_process))) {
			return -EFAULT;
		}
		if ((UINT32_MAX/sizeof(struct bindpkt_params)) <
					pkt_params.count) {
			pr_alert("diag: integer overflow while multiply\n");
			return -EFAULT;
		}
		params = kzalloc(pkt_params.count*sizeof(
				struct bindpkt_params), GFP_KERNEL);
		if (!params) {
			pr_alert("diag: unable to alloc memory\n");
			return -ENOMEM;
		} else
			head_params = params;

		if (copy_from_user(params, pkt_params.params,
			pkt_params.count*sizeof(struct bindpkt_params))) {
			kfree(head_params);
			return -EFAULT;
		}
		mutex_lock(&driver->diagchar_mutex);
		for (i = 0; i < diag_max_reg; i++) {
			if (driver->table[i].process_id == 0) {
				diag_add_reg(i, params, &success,
							&count_entries);
				if (pkt_params.count > count_entries) {
					params++;
				} else {
					mutex_unlock(&driver->diagchar_mutex);
					kfree(head_params);
					return success;
				}
			}
		}
		if (i < diag_threshold_reg) {
			/* Increase table size by amount required */
			if (pkt_params.count >= count_entries) {
				interim_count = pkt_params.count -
							count_entries;
			} else {
				pr_alert("diag: error in params count\n");
				kfree(head_params);
				mutex_unlock(&driver->diagchar_mutex);
				return -EFAULT;
			}
			if (UINT32_MAX - diag_max_reg >=
						interim_count) {
				diag_max_reg += interim_count;
			} else {
				pr_alert("diag: Integer overflow\n");
				kfree(head_params);
				mutex_unlock(&driver->diagchar_mutex);
				return -EFAULT;
			}
			/* Make sure size doesnt go beyond threshold */
			if (diag_max_reg > diag_threshold_reg) {
				diag_max_reg = diag_threshold_reg;
				pr_info("diag: best case memory allocation\n");
			}
			if (UINT32_MAX/sizeof(struct diag_master_table) <
								diag_max_reg) {
				pr_alert("diag: integer overflow\n");
				kfree(head_params);
				mutex_unlock(&driver->diagchar_mutex);
				return -EFAULT;
			}
			temp_buf = krealloc(driver->table,
					 diag_max_reg*sizeof(struct
					 diag_master_table), GFP_KERNEL);
			if (!temp_buf) {
				pr_alert("diag: Insufficient memory for reg.\n");
				mutex_unlock(&driver->diagchar_mutex);

				if (pkt_params.count >= count_entries) {
					interim_count = pkt_params.count -
								count_entries;
				} else {
					pr_alert("diag: params count error\n");
					mutex_unlock(&driver->diagchar_mutex);
					kfree(head_params);
					return -EFAULT;
				}
				if (diag_max_reg >= interim_count) {
					diag_max_reg -= interim_count;
				} else {
//.........这里部分代码省略.........

/**
 * pretimeout_noop - No operation on watchdog pretimeout event
 * @wdd - watchdog_device
 *
 * This function prints a message about pretimeout to kernel log.
 */
static void pretimeout_noop(struct watchdog_device *wdd)
{
	pr_alert("watchdog%d: pretimeout event\n", wdd->id);
}

static void __cpuinit check_tempk(struct work_struct *work)
{
	unsigned int new_freq;
	struct tsens_device tsens_dev;
	long temp = 0;
	int ret = 0;
	
	tsens_dev.sensor_num = kmsm_thermal_info.sensor_id;
	ret = tsens_get_temp(&tsens_dev, &temp);
	if (ret) {
		pr_debug("%s: Unable to read TSENS sensor %d\n",
				KBUILD_MODNAME, tsens_dev.sensor_num);
		goto reschedule;
	}
	//pr_alert("CHECK TEMP %lu-%d-%d\n", temp, kmsm_thermal_info.temp_limit_degC_start, kmsm_thermal_info.temp_limit_degC_stop);
	kmsm_thermal_info.current_temp = temp;
	
	if (temp >= kmsm_thermal_info.temp_limit_degC_start)
	{
		unsigned int i;
		if (!kmsm_thermal_info.isthrottling)
		{
			//prev_freq = cpufreq_get(0);
			thermal_get_freq_table();
			pr_alert("START KTHROTTLING - current temp = %lu - set point = %d\n", temp, kmsm_thermal_info.temp_limit_degC_start);
		}
		kmsm_thermal_info.isthrottling = 1;
		//policy = cpufreq_cpu_get(0);
		//__cpufreq_driver_target(policy, 1296000, CPUFREQ_RELATION_H);
		limit_idx -= kmsm_thermal_info.freq_steps_while_throttling;
		if (limit_idx < limit_idx_low)
			limit_idx = limit_idx_low;
		for (i = 0; i < num_online_cpus(); i++)
		{
			//pr_alert("KTHROTTLING LOOP - current temp = %lu - set point = %d\n", temp, kmsm_thermal_info.temp_limit_degC_start);
			if (cpu_online(i) && cpufreq_get(i) != table[limit_idx].frequency)
			{
				//pr_alert("KTHROTTLING LOOP IN IF - current temp = %lu - set point = %d\n", temp, kmsm_thermal_info.temp_limit_degC_start);
				//policy = NULL;
				//policy = cpufreq_cpu_get(i);
				//if (policy != NULL)
				//	__cpufreq_driver_target(policy, 1296000, CPUFREQ_RELATION_H);
				new_freq = table[limit_idx].frequency;
				do_kthermal(i, new_freq);
			}
		}
	}
	else if (kmsm_thermal_info.isthrottling && temp > kmsm_thermal_info.temp_limit_degC_stop && temp < kmsm_thermal_info.temp_limit_degC_start)
	{
		unsigned int i;
		for (i = 0; i < num_online_cpus(); i++)
		{
			if (cpu_online(i) && cpufreq_get(i) != table[limit_idx].frequency)
			{
				new_freq = table[limit_idx].frequency;
				do_kthermal(i, new_freq);
			}
		}
	}
	else if (kmsm_thermal_info.isthrottling && temp <= kmsm_thermal_info.temp_limit_degC_stop)
	{
		unsigned int i;
		bool stopThrottle = false;
		//policy = cpufreq_cpu_get(0);
		//if (prev_freq > 0)
		//	__cpufreq_driver_target(policy, prev_freq, CPUFREQ_RELATION_H);
		limit_idx += kmsm_thermal_info.freq_steps_while_throttling;
		if (limit_idx >= limit_idx_high)
		{
			limit_idx = limit_idx_high;
			kmsm_thermal_info.isthrottling = 0;
			stopThrottle = true;
			pr_alert("STOP KTHROTTLING - current temp = %lu\n", temp);
		}
		for (i = 0; i < num_online_cpus(); i++)
		{
			if (cpu_online(i))
			{
				//policy = NULL;
				//policy = cpufreq_cpu_get(i);
				//if (prev_freq > 0 && policy != NULL)
				//	__cpufreq_driver_target(policy, prev_freq, CPUFREQ_RELATION_H);
				//do_thermal(i, prev_freq);
				new_freq = table[limit_idx].frequency;
				do_kthermal(i, new_freq);
			}
		}
		if (stopThrottle)
			do_kthermal(0, 0);
	}

reschedule:
	schedule_delayed_work_on(0, &check_temp_workk,
			msecs_to_jiffies(kmsm_thermal_info.poll_speed));
}

static void an30259a_set_led_blink(enum an30259a_led_enum led,
					unsigned int delay_on_time,
					unsigned int delay_off_time,
					u8 brightness)
{
	struct i2c_client *client;
	client = b_client;

	if (brightness == LED_OFF) {
		leds_on(led, false, false, brightness);
		return;
	}

	if (brightness > LED_MAX_CURRENT)
		brightness = LED_MAX_CURRENT;

	if (led == LED_R)
		LED_DYNAMIC_CURRENT = LED_R_CURRENT;
	else if (led == LED_G)
		LED_DYNAMIC_CURRENT = LED_G_CURRENT;
	else if (led == LED_B)
		LED_DYNAMIC_CURRENT = LED_B_CURRENT;

	/* In user case, LED current is restricted */
	if (led_intensity == 0 || led_intensity == 40) {	// if stock intesity is used (see LED_x_CURRENT = 0x28)
		brightness = (brightness * LED_DYNAMIC_CURRENT) / LED_MAX_CURRENT;
	}
	else if (led_intensity != 0) {	// adapt current to led_intensity
		brightness = (brightness * led_intensity) / LED_MAX_CURRENT;
	}

	if (led_enable_fade_charging == 1)
	{
		if (led_time_on)
			delay_on_time = led_time_on;
		if (led_time_off)
			delay_off_time = led_time_off;
	}
	
	if (delay_on_time > SLPTT_MAX_VALUE)
		delay_on_time = SLPTT_MAX_VALUE;

	if (delay_off_time > SLPTT_MAX_VALUE)
		delay_off_time = SLPTT_MAX_VALUE;

	if (delay_off_time == LED_OFF) {
		leds_on(led, true, false, brightness);
		if (brightness == LED_OFF)
			leds_on(led, false, false, brightness);
		return;
	} else
		leds_on(led, true, true, brightness);

	if (led_time_on)
	{
		pr_alert("LED OVER-RIDE - DELAY_ON_Orig=%d, DELAY_OFF_Orig=%d, DELAY_ON_New=%d, DELAY_OFF_New=%d", delay_on_time, delay_off_time, led_time_on, led_time_off);
		delay_on_time = led_time_on;
	}
	if (led_time_off)
	{
		pr_alert("LED OVER-RIDE - DELAY_ON_Orig=%d, DELAY_OFF_Orig=%d, DELAY_ON_New=%d, DELAY_OFF_New=%d", delay_on_time, delay_off_time, led_time_on, led_time_off);
		delay_off_time = led_time_off;
	}

	if (led_enable_fade == 1) {
		leds_set_slope_mode(client, led, 0, 30, 15, 0,
			(delay_on_time + AN30259A_TIME_UNIT - 1) /
			AN30259A_TIME_UNIT,
			(delay_off_time + AN30259A_TIME_UNIT - 1) /
			AN30259A_TIME_UNIT,
			led_step_speed1, led_step_speed2, led_step_speed3, led_step_speed4);
	}
	else {
		leds_set_slope_mode(client, led, 0, 15, 15, 0,
			(delay_on_time + AN30259A_TIME_UNIT - 1) /
			AN30259A_TIME_UNIT,
			(delay_off_time + AN30259A_TIME_UNIT - 1) /
			AN30259A_TIME_UNIT,
			0, 0, 0, 0);
	}
}