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| author | Jarkko Sakkinen | 2018-06-29 14:24:50 +0200 |
|---|---|---|
| committer | Jarkko Sakkinen | 2018-07-28 16:03:11 +0200 |
| commit | 58bac8cc3010ccb845572a3512fc16c9aaa5e50e (patch) | |
| tree | 5ccd8ecaaae93054e587293bf2ac33244f922a02 /drivers/char/tpm/tpm2-space.c | |
| parent | tpm: Convert tpm_find_get_ops() to use tpm_default_chip() (diff) | |
| download | kernel-qcow2-linux-58bac8cc3010ccb845572a3512fc16c9aaa5e50e.tar.gz kernel-qcow2-linux-58bac8cc3010ccb845572a3512fc16c9aaa5e50e.tar.xz kernel-qcow2-linux-58bac8cc3010ccb845572a3512fc16c9aaa5e50e.zip | |
tpm: replace TPM_TRANSMIT_RAW with TPM_TRANSMIT_NESTED
As TPM_TRANSMIT_RAW always requires also not to take locks for obvious
reasons (deadlock), this commit renames the flag as TPM_TRANSMIT_NESTED
and prevents taking tpm_mutex when the flag is given to tpm_transmit().
Suggested-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Diffstat (limited to 'drivers/char/tpm/tpm2-space.c')
| -rw-r--r-- | drivers/char/tpm/tpm2-space.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/char/tpm/tpm2-space.c b/drivers/char/tpm/tpm2-space.c index 11c85ed8c113..d2e101b32482 100644 --- a/drivers/char/tpm/tpm2-space.c +++ b/drivers/char/tpm/tpm2-space.c @@ -39,8 +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_RAW); + TPM_TRANSMIT_NESTED); } } @@ -85,7 +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 | TPM_TRANSMIT_RAW, NULL); + TPM_TRANSMIT_NESTED, NULL); if (rc < 0) { dev_warn(&chip->dev, "%s: failed with a system error %d\n", __func__, rc); @@ -134,7 +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 | TPM_TRANSMIT_RAW, NULL); + TPM_TRANSMIT_NESTED, NULL); if (rc < 0) { dev_warn(&chip->dev, "%s: failed with a system error %d\n", __func__, rc); @@ -171,8 +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_RAW); + TPM_TRANSMIT_NESTED); tpm2_flush_sessions(chip, space); } @@ -379,8 +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 | TPM_TRANSMIT_RAW); + 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; @@ -468,8 +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_RAW); + TPM_TRANSMIT_NESTED); space->context_tbl[i] = ~0; } |