C++ (Cpp) tpm_dev_vendor_release Examples

Example #1

File: tpm_i2c_atmel.c Project: leloulight/ubuntu-linux-trusty-tuxonice

static int i2c_atmel_remove(struct i2c_client *client)
{
	struct device *dev = &(client->dev);
	struct tpm_chip *chip = dev_get_drvdata(dev);

	if (chip)
		tpm_dev_vendor_release(chip);
	tpm_remove_hardware(dev);
	kfree(chip);
	return 0;
}

Example #2

File: tpm_i2c_atmel.c Project: leloulight/ubuntu-linux-trusty-tuxonice

static int i2c_atmel_probe(struct i2c_client *client,
			   const struct i2c_device_id *id)
{
	int rc;
	struct tpm_chip *chip;
	struct device *dev = &client->dev;

	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
		return -ENODEV;

	chip = tpm_register_hardware(dev, &i2c_atmel);
	if (!chip) {
		dev_err(dev, "%s() error in tpm_register_hardware\n", __func__);
		return -ENODEV;
	}

	chip->vendor.priv = devm_kzalloc(dev, sizeof(struct priv_data),
					 GFP_KERNEL);
	if (!chip->vendor.priv) {
		rc = -ENOMEM;
		goto out_err;
	}

	/* Default timeouts */
	chip->vendor.timeout_a = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT);
	chip->vendor.timeout_b = msecs_to_jiffies(TPM_I2C_LONG_TIMEOUT);
	chip->vendor.timeout_c = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT);
	chip->vendor.timeout_d = msecs_to_jiffies(TPM_I2C_SHORT_TIMEOUT);
	chip->vendor.irq = 0;

	/* There is no known way to probe for this device, and all version
	 * information seems to be read via TPM commands. Thus we rely on the
	 * TPM startup process in the common code to detect the device. */
	if (tpm_get_timeouts(chip)) {
		rc = -ENODEV;
		goto out_err;
	}

	if (tpm_do_selftest(chip)) {
		rc = -ENODEV;
		goto out_err;
	}

	return 0;

out_err:
	tpm_dev_vendor_release(chip);
	tpm_remove_hardware(chip->dev);
	return rc;
}

Example #3

File: tpm_i2c_infineon.c Project: AllenDou/linux

static int __devexit tpm_tis_i2c_remove(struct i2c_client *client)
{
	struct tpm_chip *chip = tpm_dev.chip;
	release_locality(chip, chip->vendor.locality, 1);

	/* close file handles */
	tpm_dev_vendor_release(chip);

	/* remove hardware */
	tpm_remove_hardware(chip->dev);

	/* reset these pointers, otherwise we oops */
	chip->dev->release = NULL;
	chip->release = NULL;
	tpm_dev.client = NULL;
	dev_set_drvdata(chip->dev, chip);

	return 0;
}

Example #4

File: tpm_i2c_infineon.c Project: AllenDou/linux

static int __devinit tpm_tis_i2c_init(struct device *dev)
{
	u32 vendor;
	int rc = 0;
	struct tpm_chip *chip;

	chip = tpm_register_hardware(dev, &tpm_tis_i2c);
	if (!chip) {
		rc = -ENODEV;
		goto out_err;
	}

	/* Disable interrupts */
	chip->vendor.irq = 0;

	/* Default timeouts */
	chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
	chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
	chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
	chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);

	if (request_locality(chip, 0) != 0) {
		rc = -ENODEV;
		goto out_vendor;
	}

	/* read four bytes from DID_VID register */
	if (iic_tpm_read(TPM_DID_VID(0), (u8 *)&vendor, 4) < 0) {
		rc = -EIO;
		goto out_release;
	}

	/* create DID_VID register value, after swapping to little-endian */
	vendor = be32_to_cpu((__be32) vendor);

	if (vendor != TPM_TIS_I2C_DID_VID) {
		rc = -ENODEV;
		goto out_release;
	}

	dev_info(dev, "1.2 TPM (device-id 0x%X)\n", vendor >> 16);

	INIT_LIST_HEAD(&chip->vendor.list);
	tpm_dev.chip = chip;

	tpm_get_timeouts(chip);
	tpm_do_selftest(chip);

	return 0;

out_release:
	release_locality(chip, chip->vendor.locality, 1);

out_vendor:
	/* close file handles */
	tpm_dev_vendor_release(chip);

	/* remove hardware */
	tpm_remove_hardware(chip->dev);

	/* reset these pointers, otherwise we oops */
	chip->dev->release = NULL;
	chip->release = NULL;
	tpm_dev.client = NULL;
	dev_set_drvdata(chip->dev, chip);
out_err:
	return rc;
}