diff --git a/drivers/char/tpm/st33zp24/st33zp24.c b/drivers/char/tpm/st33zp24/st33zp24.c index c0771980bc2f..2ed7815e4899 100644 --- a/drivers/char/tpm/st33zp24/st33zp24.c +++ b/drivers/char/tpm/st33zp24/st33zp24.c @@ -300,7 +300,7 @@ static irqreturn_t tpm_ioserirq_handler(int irq, void *dev_id) * send TPM commands through the I2C bus. */ static int st33zp24_send(struct tpm_chip *chip, unsigned char *buf, - size_t len) + size_t bufsiz, size_t len) { struct st33zp24_dev *tpm_dev = dev_get_drvdata(&chip->dev); u32 status, i, size, ordinal; diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c index 8d7e4da6ed53..816b7c690bc9 100644 --- a/drivers/char/tpm/tpm-interface.c +++ b/drivers/char/tpm/tpm-interface.c @@ -106,7 +106,7 @@ static ssize_t tpm_try_transmit(struct tpm_chip *chip, void *buf, size_t bufsiz) return -E2BIG; } - rc = chip->ops->send(chip, buf, count); + rc = chip->ops->send(chip, buf, bufsiz, count); if (rc < 0) { if (rc != -EPIPE) dev_err(&chip->dev, diff --git a/drivers/char/tpm/tpm_atmel.c b/drivers/char/tpm/tpm_atmel.c index 54a0360a3c95..f25faf468bba 100644 --- a/drivers/char/tpm/tpm_atmel.c +++ b/drivers/char/tpm/tpm_atmel.c @@ -148,7 +148,8 @@ static int tpm_atml_recv(struct tpm_chip *chip, u8 *buf, size_t count) return size; } -static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t count) +static int tpm_atml_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t count) { struct tpm_atmel_priv *priv = dev_get_drvdata(&chip->dev); int i; diff --git a/drivers/char/tpm/tpm_crb.c b/drivers/char/tpm/tpm_crb.c index 876edf2705ab..ed97344f2324 100644 --- a/drivers/char/tpm/tpm_crb.c +++ b/drivers/char/tpm/tpm_crb.c @@ -426,7 +426,7 @@ static int tpm_crb_smc_start(struct device *dev, unsigned long func_id) } #endif -static int crb_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int crb_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, size_t len) { struct crb_priv *priv = dev_get_drvdata(&chip->dev); int rc = 0; diff --git a/drivers/char/tpm/tpm_ftpm_tee.c b/drivers/char/tpm/tpm_ftpm_tee.c index 53ba28ccd5d3..dbad83bf798e 100644 --- a/drivers/char/tpm/tpm_ftpm_tee.c +++ b/drivers/char/tpm/tpm_ftpm_tee.c @@ -63,13 +63,15 @@ static int ftpm_tee_tpm_op_recv(struct tpm_chip *chip, u8 *buf, size_t count) * ftpm_tee_tpm_op_send() - send TPM commands through the TEE shared memory. * @chip: the tpm_chip description as specified in driver/char/tpm/tpm.h * @buf: the buffer to send. + * @bufsiz: the size of the buffer. * @len: the number of bytes to send. * * Return: * In case of success, returns 0. * On failure, -errno */ -static int ftpm_tee_tpm_op_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int ftpm_tee_tpm_op_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t len) { struct ftpm_tee_private *pvt_data = dev_get_drvdata(chip->dev.parent); size_t resp_len; diff --git a/drivers/char/tpm/tpm_i2c_atmel.c b/drivers/char/tpm/tpm_i2c_atmel.c index d1d27fdfe523..4f229656a8e2 100644 --- a/drivers/char/tpm/tpm_i2c_atmel.c +++ b/drivers/char/tpm/tpm_i2c_atmel.c @@ -37,7 +37,8 @@ struct priv_data { u8 buffer[sizeof(struct tpm_header) + 25]; }; -static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int i2c_atmel_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t len) { struct priv_data *priv = dev_get_drvdata(&chip->dev); struct i2c_client *client = to_i2c_client(chip->dev.parent); diff --git a/drivers/char/tpm/tpm_i2c_infineon.c b/drivers/char/tpm/tpm_i2c_infineon.c index 81d8a78dc655..bdf1f329a679 100644 --- a/drivers/char/tpm/tpm_i2c_infineon.c +++ b/drivers/char/tpm/tpm_i2c_infineon.c @@ -514,7 +514,8 @@ static int tpm_tis_i2c_recv(struct tpm_chip *chip, u8 *buf, size_t count) return size; } -static int tpm_tis_i2c_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int tpm_tis_i2c_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t len) { int rc, status; ssize_t burstcnt; diff --git a/drivers/char/tpm/tpm_i2c_nuvoton.c b/drivers/char/tpm/tpm_i2c_nuvoton.c index 3c3ee5f551db..d44903b29929 100644 --- a/drivers/char/tpm/tpm_i2c_nuvoton.c +++ b/drivers/char/tpm/tpm_i2c_nuvoton.c @@ -350,7 +350,8 @@ static int i2c_nuvoton_recv(struct tpm_chip *chip, u8 *buf, size_t count) * tpm.c can skip polling for the data to be available as the interrupt is * waited for here */ -static int i2c_nuvoton_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int i2c_nuvoton_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t len) { struct priv_data *priv = dev_get_drvdata(&chip->dev); struct device *dev = chip->dev.parent; diff --git a/drivers/char/tpm/tpm_ibmvtpm.c b/drivers/char/tpm/tpm_ibmvtpm.c index 76d048f63d55..4734a69406ce 100644 --- a/drivers/char/tpm/tpm_ibmvtpm.c +++ b/drivers/char/tpm/tpm_ibmvtpm.c @@ -191,13 +191,15 @@ static int tpm_ibmvtpm_resume(struct device *dev) * tpm_ibmvtpm_send() - Send a TPM command * @chip: tpm chip struct * @buf: buffer contains data to send - * @count: size of buffer + * @bufsiz: size of the buffer + * @count: length of the command * * Return: * 0 on success, * -errno on error */ -static int tpm_ibmvtpm_send(struct tpm_chip *chip, u8 *buf, size_t count) +static int tpm_ibmvtpm_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t count) { struct ibmvtpm_dev *ibmvtpm = dev_get_drvdata(&chip->dev); bool retry = true; diff --git a/drivers/char/tpm/tpm_infineon.c b/drivers/char/tpm/tpm_infineon.c index 2d2ae37153ba..7638b65b851b 100644 --- a/drivers/char/tpm/tpm_infineon.c +++ b/drivers/char/tpm/tpm_infineon.c @@ -312,7 +312,8 @@ static int tpm_inf_recv(struct tpm_chip *chip, u8 * buf, size_t count) return -EIO; } -static int tpm_inf_send(struct tpm_chip *chip, u8 * buf, size_t count) +static int tpm_inf_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t count) { int i; int ret; diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c index 0f62bbc940da..879ac88f5783 100644 --- a/drivers/char/tpm/tpm_nsc.c +++ b/drivers/char/tpm/tpm_nsc.c @@ -178,7 +178,8 @@ static int tpm_nsc_recv(struct tpm_chip *chip, u8 * buf, size_t count) return size; } -static int tpm_nsc_send(struct tpm_chip *chip, u8 * buf, size_t count) +static int tpm_nsc_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t count) { struct tpm_nsc_priv *priv = dev_get_drvdata(&chip->dev); u8 data; diff --git a/drivers/char/tpm/tpm_svsm.c b/drivers/char/tpm/tpm_svsm.c index 4280edf427d6..0847cbf450b4 100644 --- a/drivers/char/tpm/tpm_svsm.c +++ b/drivers/char/tpm/tpm_svsm.c @@ -25,7 +25,8 @@ struct tpm_svsm_priv { void *buffer; }; -static int tpm_svsm_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int tpm_svsm_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t len) { struct tpm_svsm_priv *priv = dev_get_drvdata(&chip->dev); int ret; diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c index ed0d3d8449b3..4b12c4b9da8b 100644 --- a/drivers/char/tpm/tpm_tis_core.c +++ b/drivers/char/tpm/tpm_tis_core.c @@ -580,7 +580,8 @@ static int tpm_tis_send_main(struct tpm_chip *chip, const u8 *buf, size_t len) return rc; } -static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int tpm_tis_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t len) { int rc, irq; struct tpm_tis_data *priv = dev_get_drvdata(&chip->dev); diff --git a/drivers/char/tpm/tpm_tis_i2c_cr50.c b/drivers/char/tpm/tpm_tis_i2c_cr50.c index 3b55a7b05c46..fc6891a0b693 100644 --- a/drivers/char/tpm/tpm_tis_i2c_cr50.c +++ b/drivers/char/tpm/tpm_tis_i2c_cr50.c @@ -546,13 +546,15 @@ static int tpm_cr50_i2c_tis_recv(struct tpm_chip *chip, u8 *buf, size_t buf_len) * tpm_cr50_i2c_tis_send() - TPM transmission callback. * @chip: A TPM chip. * @buf: Buffer to send. - * @len: Buffer length. + * @bufsiz: Buffer size. + * @len: Command length. * * Return: * - 0: Success. * - -errno: A POSIX error code. */ -static int tpm_cr50_i2c_tis_send(struct tpm_chip *chip, u8 *buf, size_t len) +static int tpm_cr50_i2c_tis_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t len) { size_t burstcnt, limit, sent = 0; u8 tpm_go[4] = { TPM_STS_GO }; diff --git a/drivers/char/tpm/tpm_vtpm_proxy.c b/drivers/char/tpm/tpm_vtpm_proxy.c index 8fe4a01eea12..0818bb517805 100644 --- a/drivers/char/tpm/tpm_vtpm_proxy.c +++ b/drivers/char/tpm/tpm_vtpm_proxy.c @@ -321,12 +321,14 @@ static int vtpm_proxy_is_driver_command(struct tpm_chip *chip, * * @chip: tpm chip to use * @buf: send buffer + * @bufsiz: size of the buffer * @count: bytes to send * * Return: * 0 in case of success, negative error value otherwise. */ -static int vtpm_proxy_tpm_op_send(struct tpm_chip *chip, u8 *buf, size_t count) +static int vtpm_proxy_tpm_op_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t count) { struct proxy_dev *proxy_dev = dev_get_drvdata(&chip->dev); diff --git a/drivers/char/tpm/xen-tpmfront.c b/drivers/char/tpm/xen-tpmfront.c index 80cca3b83b22..556bf2256716 100644 --- a/drivers/char/tpm/xen-tpmfront.c +++ b/drivers/char/tpm/xen-tpmfront.c @@ -131,7 +131,8 @@ static size_t shr_data_offset(struct vtpm_shared_page *shr) return struct_size(shr, extra_pages, shr->nr_extra_pages); } -static int vtpm_send(struct tpm_chip *chip, u8 *buf, size_t count) +static int vtpm_send(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t count) { struct tpm_private *priv = dev_get_drvdata(&chip->dev); struct vtpm_shared_page *shr = priv->shr; diff --git a/include/linux/tpm.h b/include/linux/tpm.h index a3d8305e88a5..cafe8c283e88 100644 --- a/include/linux/tpm.h +++ b/include/linux/tpm.h @@ -87,7 +87,8 @@ struct tpm_class_ops { const u8 req_complete_val; bool (*req_canceled)(struct tpm_chip *chip, u8 status); int (*recv) (struct tpm_chip *chip, u8 *buf, size_t len); - int (*send) (struct tpm_chip *chip, u8 *buf, size_t len); + int (*send)(struct tpm_chip *chip, u8 *buf, size_t bufsiz, + size_t cmd_len); void (*cancel) (struct tpm_chip *chip); u8 (*status) (struct tpm_chip *chip); void (*update_timeouts)(struct tpm_chip *chip,