Commit c715ebeb authored by Linus Torvalds's avatar Linus Torvalds

Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security

Pull TPM updates from James Morris:

 - Migrate away from PM runtime as explicit cmdReady/goIdle transactions
   for every command is a spec requirement. PM runtime adds only a layer
   of complexity on our case.

 - tpm_tis drivers can now specify the hwrng quality.

 - TPM 2.0 code uses now tpm_buf for constructing messages. Jarkko
   thinks Tomas Winkler has done the same for TPM 1.2, and will start
   digging those changes from the patchwork in the near future.

 - Bug fixes and clean ups

* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  ima: Get rid of ima_used_chip and use ima_tpm_chip != NULL instead
  ima: Use tpm_default_chip() and call TPM functions with a tpm_chip
  tpm: replace TPM_TRANSMIT_RAW with TPM_TRANSMIT_NESTED
  tpm: Convert tpm_find_get_ops() to use tpm_default_chip()
  tpm: Implement tpm_default_chip() to find a TPM chip
  tpm: rename tpm_chip_find_get() to tpm_find_get_ops()
  tpm: Allow tpm_tis drivers to set hwrng quality.
  tpm: Return the actual size when receiving an unsupported command
  tpm: separate cmd_ready/go_idle from runtime_pm
  tpm/tpm_i2c_infineon: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT)
  tpm_tis_spi: Pass the SPI IRQ down to the driver
  tpm: migrate tpm2_get_random() to use struct tpm_buf
  tpm: migrate tpm2_get_tpm_pt() to use struct tpm_buf
  tpm: migrate tpm2_probe() to use struct tpm_buf
  tpm: migrate tpm2_shutdown() to use struct tpm_buf
parents 04743f89 5da08f7d
......@@ -81,42 +81,66 @@ void tpm_put_ops(struct tpm_chip *chip)
EXPORT_SYMBOL_GPL(tpm_put_ops);
/**
* tpm_chip_find_get() - find and reserve a TPM chip
* tpm_default_chip() - find a TPM chip and get a reference to it
*/
struct tpm_chip *tpm_default_chip(void)
{
struct tpm_chip *chip, *res = NULL;
int chip_num = 0;
int chip_prev;
mutex_lock(&idr_lock);
do {
chip_prev = chip_num;
chip = idr_get_next(&dev_nums_idr, &chip_num);
if (chip) {
get_device(&chip->dev);
res = chip;
break;
}
} while (chip_prev != chip_num);
mutex_unlock(&idr_lock);
return res;
}
EXPORT_SYMBOL_GPL(tpm_default_chip);
/**
* tpm_find_get_ops() - find and reserve a TPM chip
* @chip: a &struct tpm_chip instance, %NULL for the default chip
*
* Finds a TPM chip and reserves its class device and operations. The chip must
* be released with tpm_chip_put_ops() after use.
* be released with tpm_put_ops() after use.
* This function is for internal use only. It supports existing TPM callers
* by accepting NULL, but those callers should be converted to pass in a chip
* directly.
*
* Return:
* A reserved &struct tpm_chip instance.
* %NULL if a chip is not found.
* %NULL if the chip is not available.
*/
struct tpm_chip *tpm_chip_find_get(struct tpm_chip *chip)
struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip)
{
struct tpm_chip *res = NULL;
int chip_num = 0;
int chip_prev;
mutex_lock(&idr_lock);
int rc;
if (!chip) {
do {
chip_prev = chip_num;
chip = idr_get_next(&dev_nums_idr, &chip_num);
if (chip && !tpm_try_get_ops(chip)) {
res = chip;
break;
}
} while (chip_prev != chip_num);
} else {
if (chip) {
if (!tpm_try_get_ops(chip))
res = chip;
return chip;
return NULL;
}
mutex_unlock(&idr_lock);
return res;
chip = tpm_default_chip();
if (!chip)
return NULL;
rc = tpm_try_get_ops(chip);
/* release additional reference we got from tpm_default_chip() */
put_device(&chip->dev);
if (rc)
return NULL;
return chip;
}
/**
......
......@@ -29,7 +29,6 @@
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include <linux/freezer.h>
#include <linux/pm_runtime.h>
#include <linux/tpm_eventlog.h>
#include "tpm.h"
......@@ -369,10 +368,13 @@ static int tpm_validate_command(struct tpm_chip *chip,
return -EINVAL;
}
static int tpm_request_locality(struct tpm_chip *chip)
static int tpm_request_locality(struct tpm_chip *chip, unsigned int flags)
{
int rc;
if (flags & TPM_TRANSMIT_NESTED)
return 0;
if (!chip->ops->request_locality)
return 0;
......@@ -385,10 +387,13 @@ static int tpm_request_locality(struct tpm_chip *chip)
return 0;
}
static void tpm_relinquish_locality(struct tpm_chip *chip)
static void tpm_relinquish_locality(struct tpm_chip *chip, unsigned int flags)
{
int rc;
if (flags & TPM_TRANSMIT_NESTED)
return;
if (!chip->ops->relinquish_locality)
return;
......@@ -399,6 +404,28 @@ static void tpm_relinquish_locality(struct tpm_chip *chip)
chip->locality = -1;
}
static int tpm_cmd_ready(struct tpm_chip *chip, unsigned int flags)
{
if (flags & TPM_TRANSMIT_NESTED)
return 0;
if (!chip->ops->cmd_ready)
return 0;
return chip->ops->cmd_ready(chip);
}
static int tpm_go_idle(struct tpm_chip *chip, unsigned int flags)
{
if (flags & TPM_TRANSMIT_NESTED)
return 0;
if (!chip->ops->go_idle)
return 0;
return chip->ops->go_idle(chip);
}
static ssize_t tpm_try_transmit(struct tpm_chip *chip,
struct tpm_space *space,
u8 *buf, size_t bufsiz,
......@@ -423,7 +450,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
header->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS);
header->return_code = cpu_to_be32(TPM2_RC_COMMAND_CODE |
TSS2_RESMGR_TPM_RC_LAYER);
return bufsiz;
return sizeof(*header);
}
if (bufsiz > TPM_BUFSIZE)
......@@ -439,24 +466,24 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
return -E2BIG;
}
if (!(flags & TPM_TRANSMIT_UNLOCKED))
if (!(flags & TPM_TRANSMIT_UNLOCKED) && !(flags & TPM_TRANSMIT_NESTED))
mutex_lock(&chip->tpm_mutex);
if (chip->ops->clk_enable != NULL)
chip->ops->clk_enable(chip, true);
/* Store the decision as chip->locality will be changed. */
need_locality = chip->locality == -1;
if (!(flags & TPM_TRANSMIT_RAW) && need_locality) {
rc = tpm_request_locality(chip);
if (need_locality) {
rc = tpm_request_locality(chip, flags);
if (rc < 0)
goto out_no_locality;
}
if (chip->dev.parent)
pm_runtime_get_sync(chip->dev.parent);
rc = tpm_cmd_ready(chip, flags);
if (rc)
goto out;
rc = tpm2_prepare_space(chip, space, ordinal, buf);
if (rc)
......@@ -516,19 +543,22 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip,
}
rc = tpm2_commit_space(chip, space, ordinal, buf, &len);
if (rc)
dev_err(&chip->dev, "tpm2_commit_space: error %d\n", rc);
out:
if (chip->dev.parent)
pm_runtime_put_sync(chip->dev.parent);
rc = tpm_go_idle(chip, flags);
if (rc)
goto out;
if (need_locality)
tpm_relinquish_locality(chip);
tpm_relinquish_locality(chip, flags);
out_no_locality:
if (chip->ops->clk_enable != NULL)
chip->ops->clk_enable(chip, false);
if (!(flags & TPM_TRANSMIT_UNLOCKED))
if (!(flags & TPM_TRANSMIT_UNLOCKED) && !(flags & TPM_TRANSMIT_NESTED))
mutex_unlock(&chip->tpm_mutex);
return rc ? rc : len;
}
......@@ -930,7 +960,7 @@ int tpm_is_tpm2(struct tpm_chip *chip)
{
int rc;
chip = tpm_chip_find_get(chip);
chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;
......@@ -954,7 +984,7 @@ int tpm_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf)
{
int rc;
chip = tpm_chip_find_get(chip);
chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;
if (chip->flags & TPM_CHIP_FLAG_TPM2)
......@@ -1013,7 +1043,7 @@ int tpm_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash)
u32 count = 0;
int i;
chip = tpm_chip_find_get(chip);
chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;
......@@ -1142,7 +1172,7 @@ int tpm_send(struct tpm_chip *chip, void *cmd, size_t buflen)
{
int rc;
chip = tpm_chip_find_get(chip);
chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;
......@@ -1262,7 +1292,7 @@ int tpm_get_random(struct tpm_chip *chip, u8 *out, size_t max)
if (!out || !num_bytes || max > TPM_MAX_RNG_DATA)
return -EINVAL;
chip = tpm_chip_find_get(chip);
chip = tpm_find_get_ops(chip);
if (!chip)
return -ENODEV;
......@@ -1324,7 +1354,7 @@ int tpm_seal_trusted(struct tpm_chip *chip, struct trusted_key_payload *payload,
{
int rc;
chip = tpm_chip_find_get(chip);
chip = tpm_find_get_ops(chip);
if (!chip || !(chip->flags & TPM_CHIP_FLAG_TPM2))
return -ENODEV;
......@@ -1352,7 +1382,7 @@ int tpm_unseal_trusted(struct tpm_chip *chip,
{
int rc;
chip = tpm_chip_find_get(chip);
chip = tpm_find_get_ops(chip);
if (!chip || !(chip->flags & TPM_CHIP_FLAG_TPM2))
return -ENODEV;
......
......@@ -424,23 +424,24 @@ struct tpm_buf {
u8 *data;
};
static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
static inline void tpm_buf_reset(struct tpm_buf *buf, u16 tag, u32 ordinal)
{
struct tpm_input_header *head;
head = (struct tpm_input_header *)buf->data;
head->tag = cpu_to_be16(tag);
head->length = cpu_to_be32(sizeof(*head));
head->ordinal = cpu_to_be32(ordinal);
}
static inline int tpm_buf_init(struct tpm_buf *buf, u16 tag, u32 ordinal)
{
buf->data_page = alloc_page(GFP_HIGHUSER);
if (!buf->data_page)
return -ENOMEM;
buf->flags = 0;
buf->data = kmap(buf->data_page);
head = (struct tpm_input_header *) buf->data;
head->tag = cpu_to_be16(tag);
head->length = cpu_to_be32(sizeof(*head));
head->ordinal = cpu_to_be32(ordinal);
tpm_buf_reset(buf, tag, ordinal);
return 0;
}
......@@ -511,9 +512,17 @@ extern const struct file_operations tpm_fops;
extern const struct file_operations tpmrm_fops;
extern struct idr dev_nums_idr;
/**
* enum tpm_transmit_flags - flags for tpm_transmit()
*
* @TPM_TRANSMIT_UNLOCKED: do not lock the chip
* @TPM_TRANSMIT_NESTED: discard setup steps (power management,
* locality) including locking (i.e. implicit
* UNLOCKED)
*/
enum tpm_transmit_flags {
TPM_TRANSMIT_UNLOCKED = BIT(0),
TPM_TRANSMIT_RAW = BIT(1),
TPM_TRANSMIT_NESTED = BIT(1),
};
ssize_t tpm_transmit(struct tpm_chip *chip, struct tpm_space *space,
......@@ -538,7 +547,7 @@ static inline void tpm_msleep(unsigned int delay_msec)
delay_msec * 1000);
};
struct tpm_chip *tpm_chip_find_get(struct tpm_chip *chip);
struct tpm_chip *tpm_find_get_ops(struct tpm_chip *chip);
__must_check int tpm_try_get_ops(struct tpm_chip *chip);
void tpm_put_ops(struct tpm_chip *chip);
......@@ -569,7 +578,7 @@ static inline u32 tpm2_rc_value(u32 rc)
int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, u32 count,
struct tpm2_digest *digests);
int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max);
int tpm2_get_random(struct tpm_chip *chip, u8 *dest, size_t max);
void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
unsigned int flags);
int tpm2_seal_trusted(struct tpm_chip *chip,
......
This diff is collapsed.
......@@ -39,7 +39,7 @@ static void tpm2_flush_sessions(struct tpm_chip *chip, struct tpm_space *space)
for (i = 0; i < ARRAY_SIZE(space->session_tbl); i++) {
if (space->session_tbl[i])
tpm2_flush_context_cmd(chip, space->session_tbl[i],
TPM_TRANSMIT_UNLOCKED);
TPM_TRANSMIT_NESTED);
}
}
......@@ -84,7 +84,7 @@ static int tpm2_load_context(struct tpm_chip *chip, u8 *buf,
tpm_buf_append(&tbuf, &buf[*offset], body_size);
rc = tpm_transmit_cmd(chip, NULL, tbuf.data, PAGE_SIZE, 4,
TPM_TRANSMIT_UNLOCKED, NULL);
TPM_TRANSMIT_NESTED, NULL);
if (rc < 0) {
dev_warn(&chip->dev, "%s: failed with a system error %d\n",
__func__, rc);
......@@ -133,7 +133,7 @@ static int tpm2_save_context(struct tpm_chip *chip, u32 handle, u8 *buf,
tpm_buf_append_u32(&tbuf, handle);
rc = tpm_transmit_cmd(chip, NULL, tbuf.data, PAGE_SIZE, 0,
TPM_TRANSMIT_UNLOCKED, NULL);
TPM_TRANSMIT_NESTED, NULL);
if (rc < 0) {
dev_warn(&chip->dev, "%s: failed with a system error %d\n",
__func__, rc);
......@@ -170,7 +170,7 @@ static void tpm2_flush_space(struct tpm_chip *chip)
for (i = 0; i < ARRAY_SIZE(space->context_tbl); i++)
if (space->context_tbl[i] && ~space->context_tbl[i])
tpm2_flush_context_cmd(chip, space->context_tbl[i],
TPM_TRANSMIT_UNLOCKED);
TPM_TRANSMIT_NESTED);
tpm2_flush_sessions(chip, space);
}
......@@ -377,7 +377,7 @@ static int tpm2_map_response_header(struct tpm_chip *chip, u32 cc, u8 *rsp,
return 0;
out_no_slots:
tpm2_flush_context_cmd(chip, phandle, TPM_TRANSMIT_UNLOCKED);
tpm2_flush_context_cmd(chip, phandle, TPM_TRANSMIT_NESTED);
dev_warn(&chip->dev, "%s: out of slots for 0x%08X\n", __func__,
phandle);
return -ENOMEM;
......@@ -465,7 +465,7 @@ static int tpm2_save_space(struct tpm_chip *chip)
return rc;
tpm2_flush_context_cmd(chip, space->context_tbl[i],
TPM_TRANSMIT_UNLOCKED);
TPM_TRANSMIT_NESTED);
space->context_tbl[i] = ~0;
}
......
......@@ -132,7 +132,7 @@ static bool crb_wait_for_reg_32(u32 __iomem *reg, u32 mask, u32 value,
}
/**
* crb_go_idle - request tpm crb device to go the idle state
* __crb_go_idle - request tpm crb device to go the idle state
*
* @dev: crb device
* @priv: crb private data
......@@ -147,7 +147,7 @@ static bool crb_wait_for_reg_32(u32 __iomem *reg, u32 mask, u32 value,
*
* Return: 0 always
*/
static int crb_go_idle(struct device *dev, struct crb_priv *priv)
static int __crb_go_idle(struct device *dev, struct crb_priv *priv)
{
if ((priv->sm == ACPI_TPM2_START_METHOD) ||
(priv->sm == ACPI_TPM2_COMMAND_BUFFER_WITH_START_METHOD) ||
......@@ -163,11 +163,20 @@ static int crb_go_idle(struct device *dev, struct crb_priv *priv)
dev_warn(dev, "goIdle timed out\n");
return -ETIME;
}
return 0;
}
static int crb_go_idle(struct tpm_chip *chip)
{
struct device *dev = &chip->dev;
struct crb_priv *priv = dev_get_drvdata(dev);
return __crb_go_idle(dev, priv);
}
/**
* crb_cmd_ready - request tpm crb device to enter ready state
* __crb_cmd_ready - request tpm crb device to enter ready state
*
* @dev: crb device
* @priv: crb private data
......@@ -181,7 +190,7 @@ static int crb_go_idle(struct device *dev, struct crb_priv *priv)
*
* Return: 0 on success -ETIME on timeout;
*/
static int crb_cmd_ready(struct device *dev, struct crb_priv *priv)
static int __crb_cmd_ready(struct device *dev, struct crb_priv *priv)
{
if ((priv->sm == ACPI_TPM2_START_METHOD) ||
(priv->sm == ACPI_TPM2_COMMAND_BUFFER_WITH_START_METHOD) ||
......@@ -200,6 +209,14 @@ static int crb_cmd_ready(struct device *dev, struct crb_priv *priv)
return 0;
}
static int crb_cmd_ready(struct tpm_chip *chip)
{
struct device *dev = &chip->dev;
struct crb_priv *priv = dev_get_drvdata(dev);
return __crb_cmd_ready(dev, priv);
}
static int __crb_request_locality(struct device *dev,
struct crb_priv *priv, int loc)
{
......@@ -401,6 +418,8 @@ static const struct tpm_class_ops tpm_crb = {
.send = crb_send,
.cancel = crb_cancel,
.req_canceled = crb_req_canceled,
.go_idle = crb_go_idle,
.cmd_ready = crb_cmd_ready,
.request_locality = crb_request_locality,
.relinquish_locality = crb_relinquish_locality,
.req_complete_mask = CRB_DRV_STS_COMPLETE,
......@@ -520,7 +539,7 @@ static int crb_map_io(struct acpi_device *device, struct crb_priv *priv,
* PTT HW bug w/a: wake up the device to access
* possibly not retained registers.
*/
ret = crb_cmd_ready(dev, priv);
ret = __crb_cmd_ready(dev, priv);
if (ret)
goto out_relinquish_locality;
......@@ -565,7 +584,7 @@ static int crb_map_io(struct acpi_device *device, struct crb_priv *priv,
if (!ret)
priv->cmd_size = cmd_size;
crb_go_idle(dev, priv);
__crb_go_idle(dev, priv);
out_relinquish_locality:
......@@ -628,32 +647,7 @@ static int crb_acpi_add(struct acpi_device *device)
chip->acpi_dev_handle = device->handle;
chip->flags = TPM_CHIP_FLAG_TPM2;
rc = __crb_request_locality(dev, priv, 0);
if (rc)
return rc;
rc = crb_cmd_ready(dev, priv);
if (rc)
goto out;
pm_runtime_get_noresume(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
rc = tpm_chip_register(chip);
if (rc) {
crb_go_idle(dev, priv);
pm_runtime_put_noidle(dev);
pm_runtime_disable(dev);
goto out;
}
pm_runtime_put_sync(dev);
out:
__crb_relinquish_locality(dev, priv, 0);
return rc;
return tpm_chip_register(chip);
}
static int crb_acpi_remove(struct acpi_device *device)
......@@ -663,52 +657,11 @@ static int crb_acpi_remove(struct acpi_device *device)
tpm_chip_unregister(chip);
pm_runtime_disable(dev);
return 0;
}
static int __maybe_unused crb_pm_runtime_suspend(struct device *dev)
{
struct tpm_chip *chip = dev_get_drvdata(dev);
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
return crb_go_idle(dev, priv);
}
static int __maybe_unused crb_pm_runtime_resume(struct device *dev)
{
struct tpm_chip *chip = dev_get_drvdata(dev);
struct crb_priv *priv = dev_get_drvdata(&chip->dev);
return crb_cmd_ready(dev, priv);
}
static int __maybe_unused crb_pm_suspend(struct device *dev)
{
int ret;
ret = tpm_pm_suspend(dev);
if (ret)
return ret;
return crb_pm_runtime_suspend(dev);
}
static int __maybe_unused crb_pm_resume(struct device *dev)
{
int ret;
ret = crb_pm_runtime_resume(dev);
if (ret)
return ret;
return tpm_pm_resume(dev);
}
static const struct dev_pm_ops crb_pm = {
SET_SYSTEM_SLEEP_PM_OPS(crb_pm_suspend, crb_pm_resume)
SET_RUNTIME_PM_OPS(crb_pm_runtime_suspend, crb_pm_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(tpm_pm_suspend, tpm_pm_resume)
};
static const struct acpi_device_id crb_device_ids[] = {
......
......@@ -117,7 +117,7 @@ static int iic_tpm_read(u8 addr, u8 *buffer, size_t len)
/* Lock the adapter for the duration of the whole sequence. */
if (!tpm_dev.client->adapter->algo->master_xfer)
return -EOPNOTSUPP;
i2c_lock_adapter(tpm_dev.client->adapter);
i2c_lock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
if (tpm_dev.chip_type == SLB9645) {
/* use a combined read for newer chips
......@@ -192,7 +192,7 @@ static int iic_tpm_read(u8 addr, u8 *buffer, size_t len)
}
out:
i2c_unlock_adapter(tpm_dev.client->adapter);
i2c_unlock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
/* take care of 'guard time' */
usleep_range(SLEEP_DURATION_LOW, SLEEP_DURATION_HI);
......@@ -224,7 +224,7 @@ static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len,
if (!tpm_dev.client->adapter->algo->master_xfer)
return -EOPNOTSUPP;
i2c_lock_adapter(tpm_dev.client->adapter);
i2c_lock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
/* prepend the 'register address' to the buffer */
tpm_dev.buf[0] = addr;
......@@ -243,7 +243,7 @@ static int iic_tpm_write_generic(u8 addr, u8 *buffer, size_t len,
usleep_range(sleep_low, sleep_hi);
}
i2c_unlock_adapter(tpm_dev.client->adapter);
i2c_unlock_bus(tpm_dev.client->adapter, I2C_LOCK_SEGMENT);
/* take care of 'guard time' */
usleep_range(SLEEP_DURATION_LOW, SLEEP_DURATION_HI);
......
......@@ -875,6 +875,8 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
chip->acpi_dev_handle = acpi_dev_handle;
#endif
chip->hwrng.quality = priv->rng_quality;
/* Maximum timeouts */
chip->timeout_a = msecs_to_jiffies(TIS_TIMEOUT_A_MAX);
chip->timeout_b = msecs_to_jiffies(TIS_TIMEOUT_B_MAX);
......
......@@ -99,6 +99,7 @@ struct tpm_tis_data {
wait_queue_head_t int_queue;
wait_queue_head_t read_queue;
const struct tpm_tis_phy_ops *phy_ops;
unsigned short rng_quality;
};
struct tpm_tis_phy_ops {
......
......@@ -199,6 +199,7 @@ static const struct tpm_tis_phy_ops tpm_spi_phy_ops = {
static int tpm_tis_spi_probe(struct spi_device *dev)
{
struct tpm_tis_spi_phy *phy;
int irq;
phy = devm_kzalloc(&dev->dev, sizeof(struct tpm_tis_spi_phy),
GFP_KERNEL);
......@@ -211,7 +212,13 @@ static int tpm_tis_spi_probe(struct spi_device *dev)
if (!phy->iobuf)
return -ENOMEM;
return tpm_tis_core_init(&dev->dev, &phy->priv, -1, &tpm_spi_phy_ops,
/* If the SPI device has an IRQ then use that */
if (dev->irq > 0)
irq = dev->irq;
else
irq = -1;
return tpm_tis_core_init(&dev->dev, &phy->priv, irq, &tpm_spi_phy_ops,
NULL);
}
......
......@@ -418,7 +418,7 @@ static int vtpm_proxy_request_locality(struct tpm_chip *chip, int locality)
proxy_dev->state |= STATE_DRIVER_COMMAND;
rc = tpm_transmit_cmd(chip, NULL, buf.data, tpm_buf_length(&buf), 0,
TPM_TRANSMIT_UNLOCKED | TPM_TRANSMIT_RAW,
TPM_TRANSMIT_NESTED,
"attempting to set locality");
proxy_dev->state &= ~STATE_DRIVER_COMMAND;
......
......@@ -43,6 +43,8 @@ struct tpm_class_ops {
u8 (*status) (struct tpm_chip *chip);
bool (*update_timeouts)(struct tpm_chip *chip,
unsigned long *timeout_cap);
int (*go_idle)(struct tpm_chip *chip);
int (*cmd_ready)(struct tpm_chip *chip);
int (*request_locality)(struct tpm_chip *chip, int loc);
int (*relinquish_locality)(struct tpm_chip *chip, int loc);
void (*clk_enable)(struct tpm_chip *chip, bool value);
......@@ -61,6 +63,7 @@ extern int tpm_seal_trusted(struct tpm_chip *chip,
extern int tpm_unseal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options);
extern struct tpm_chip *tpm_default_chip(void);
#else
static inline int tpm_is_tpm2(struct tpm_chip *chip)
{
......@@ -96,5 +99,9 @@ static inline int tpm_unseal_trusted(struct tpm_chip *chip,
{
return -ENODEV;
}
static inline struct tpm_chip