diff options
| author | Stefano Garzarella <sgarzare@redhat.com> | 2025-06-20 16:08:07 +0300 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko@kernel.org> | 2025-07-23 02:23:18 +0300 |
| commit | 07d8004d6fb95cbe48918e56012f16454cfdfe89 (patch) | |
| tree | da6c142d871a7eaf8a006bcfd17ea2430e5b1770 /include | |
| parent | 89be9a83ccf1f88522317ce02f854f30d6115c41 (diff) | |
| download | linux-07d8004d6fb95cbe48918e56012f16454cfdfe89.tar.xz | |
tpm: add bufsiz parameter in the .send callback
Add a new `bufsiz` parameter to the `.send` callback in `tpm_class_ops`.
This parameter will allow drivers to differentiate between the actual
command length to send and the total buffer size. Currently `bufsiz` is
not used, but it will be used to implement devices with synchronous send()
to send the command and receive the response on the same buffer.
Also rename the previous parameter `len` to `cmd_len` in the declaration
to make it clear that it contains the length in bytes of the command
stored in the buffer. The semantics don't change and it can be used as
before by drivers. This is an optimization since the drivers could get it
from the header, but let's avoid duplicating code.
While we are here, resolve a checkpatch warning:
WARNING: Unnecessary space before function pointer arguments
#66: FILE: include/linux/tpm.h:90:
+ int (*send) (struct tpm_chip *chip, u8 *buf, size_t bufsiz,
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Suggested-by: Jarkko Sakkinen <jarkko@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tpm.h | 3 |
1 files changed, 2 insertions, 1 deletions
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, |