diff options
Diffstat (limited to 'drivers/char/tpm/tpm-buf.c')
| -rw-r--r-- | drivers/char/tpm/tpm-buf.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/char/tpm/tpm-buf.c b/drivers/char/tpm/tpm-buf.c index cad0048bcc3c..dc882fc9fa9e 100644 --- a/drivers/char/tpm/tpm-buf.c +++ b/drivers/char/tpm/tpm-buf.c @@ -147,6 +147,26 @@ void tpm_buf_append_u32(struct tpm_buf *buf, const u32 value) EXPORT_SYMBOL_GPL(tpm_buf_append_u32); /** + * tpm_buf_append_handle() - Add a handle + * @chip: &tpm_chip instance + * @buf: &tpm_buf instance + * @handle: a TPM object handle + * + * Add a handle to the buffer, and increase the count tracking the number of + * handles in the command buffer. Works only for command buffers. + */ +void tpm_buf_append_handle(struct tpm_chip *chip, struct tpm_buf *buf, u32 handle) +{ + if (buf->flags & TPM_BUF_TPM2B) { + dev_err(&chip->dev, "Invalid buffer type (TPM2B)\n"); + return; + } + + tpm_buf_append_u32(buf, handle); + buf->handles++; +} + +/** * tpm_buf_read() - Read from a TPM buffer * @buf: &tpm_buf instance * @offset: offset within the buffer @@ -181,7 +201,7 @@ static void tpm_buf_read(struct tpm_buf *buf, off_t *offset, size_t count, void */ u8 tpm_buf_read_u8(struct tpm_buf *buf, off_t *offset) { - u8 value; + u8 value = 0; tpm_buf_read(buf, offset, sizeof(value), &value); @@ -198,7 +218,7 @@ EXPORT_SYMBOL_GPL(tpm_buf_read_u8); */ u16 tpm_buf_read_u16(struct tpm_buf *buf, off_t *offset) { - u16 value; + u16 value = 0; tpm_buf_read(buf, offset, sizeof(value), &value); @@ -215,7 +235,7 @@ EXPORT_SYMBOL_GPL(tpm_buf_read_u16); */ u32 tpm_buf_read_u32(struct tpm_buf *buf, off_t *offset) { - u32 value; + u32 value = 0; tpm_buf_read(buf, offset, sizeof(value), &value); |