@@ -330,29 +330,28 @@ EXPORT_SYMBOL_GPL(tpm_calc_ordinal_duration);
/*
* Internal kernel interface to transmit TPM commands
*/
-ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
- size_t bufsiz)
+ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t len)
{
ssize_t rc;
u32 count, ordinal;
unsigned long stop;
- if (bufsiz > TPM_BUFSIZE)
- bufsiz = TPM_BUFSIZE;
+ if (len > TPM_BUFSIZE)
+ len = TPM_BUFSIZE;
count = be32_to_cpu(*((__be32 *) (buf + 2)));
ordinal = be32_to_cpu(*((__be32 *) (buf + 6)));
if (count == 0)
return -ENODATA;
- if (count > bufsiz) {
+ if (count > len) {
dev_err(&chip->dev,
- "invalid count value %x %zx\n", count, bufsiz);
+ "invalid count value %x %zx\n", count, len);
return -E2BIG;
}
mutex_lock(&chip->tpm_mutex);
- rc = chip->ops->send(chip, (u8 *) buf, count);
+ rc = chip->ops->send(chip, buf, count);
if (rc < 0) {
dev_err(&chip->dev,
"tpm_transmit: tpm_send: error %zd\n", rc);
@@ -388,7 +387,7 @@ ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
goto out;
out_recv:
- rc = chip->ops->recv(chip, (u8 *) buf, bufsiz);
+ rc = chip->ops->recv(chip, buf, len);
if (rc < 0)
dev_err(&chip->dev,
"tpm_transmit: tpm_recv: error %zd\n", rc);
@@ -472,8 +472,7 @@ extern const struct file_operations tpm_fops;
extern struct idr dev_nums_idr;
ssize_t tpm_getcap(struct device *, __be32, cap_t *, const char *);
-ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf,
- size_t bufsiz);
+ssize_t tpm_transmit(struct tpm_chip *chip, u8 *buf, size_t len);
ssize_t tpm_transmit_cmd(struct tpm_chip *chip, void *cmd, int len,
const char *desc);
extern int tpm_get_timeouts(struct tpm_chip *);
@@ -921,7 +921,7 @@ int tpm2_probe(struct tpm_chip *chip)
cmd.params.get_tpm_pt_in.property_id = cpu_to_be32(0x100);
cmd.params.get_tpm_pt_in.property_cnt = cpu_to_be32(1);
- rc = tpm_transmit(chip, (const char *) &cmd, sizeof(cmd));
+ rc = tpm_transmit(chip, (u8 *) &cmd, sizeof(cmd));
if (rc < 0)
return rc;
else if (rc < TPM_HEADER_SIZE)
Changed the type of 'buf' from 'const char *' to 'u8*' because the contents of the 'buf' get modified by the function and to better match the API in struct tpm_class_ops. Renamed 'bufsize' to 'len' in order to better match the API in struct tpm_class_ops. Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> --- drivers/char/tpm/tpm-interface.c | 15 +++++++-------- drivers/char/tpm/tpm.h | 3 +-- drivers/char/tpm/tpm2-cmd.c | 2 +- 3 files changed, 9 insertions(+), 11 deletions(-)