Migrated into single tpm_gen_interrupt() function and cleaned up the
whole construction in general because it was starting to turn into a
train wreck.
Signed-off-by: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
---
drivers/char/tpm/tpm-interface.c | 23 ++++++++++++++---------
drivers/char/tpm/tpm.h | 1 -
drivers/char/tpm/tpm2-cmd.c | 17 -----------------
drivers/char/tpm/tpm_tis_core.c | 5 +----
4 files changed, 15 insertions(+), 31 deletions(-)
diff --git a/drivers/char/tpm/tpm-interface.c b/drivers/char/tpm/tpm-interface.c
index 1abe2d7..88dafcd 100644
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -459,18 +459,23 @@ ssize_t tpm_getcap(struct tpm_chip *chip, __be32
subcap_id, cap_t *cap,
return rc;
}
+/**
+ * tpm_gen_interrupt -- generate an interrupt by issuing an idempotent command
+ * @chip: TPM chip to use
+ *
+ * Returns 0 on success, < 0 in case of fatal error or a value > 0 representing
+ * a TPM error code.
+ */
void tpm_gen_interrupt(struct tpm_chip *chip)
{
- struct tpm_cmd_t tpm_cmd;
- ssize_t rc;
+ const char *desc = "attempting to generate an interrupt";
+ u32 cap2;
+ cap_t cap;
- tpm_cmd.header.in = tpm_getcap_header;
- tpm_cmd.params.getcap_in.cap = TPM_CAP_PROP;
- tpm_cmd.params.getcap_in.subcap_size = cpu_to_be32(4);
- tpm_cmd.params.getcap_in.subcap = TPM_CAP_PROP_TIS_TIMEOUT;
-
- rc = tpm_transmit_cmd(chip, &tpm_cmd, TPM_INTERNAL_RESULT_SIZE,
- "attempting to determine the timeouts");
+ if (chip->flags & TPM_CHIP_FLAG_TPM2)
+ tpm2_get_tpm_pt(chip, 0x100, &cap2, desc);
+ else
+ tpm_getcap(chip, TPM_CAP_PROP_TIS_TIMEOUT, &cap, desc);
}
EXPORT_SYMBOL_GPL(tpm_gen_interrupt);
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 8b864dd..ec1f877 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -530,6 +530,5 @@ ssize_t tpm2_get_tpm_pt(struct tpm_chip *chip, u32
property_id,
int tpm2_auto_startup(struct tpm_chip *chip);
void tpm2_shutdown(struct tpm_chip *chip, u16 shutdown_type);
unsigned long tpm2_calc_ordinal_duration(struct tpm_chip *chip, u32 ordinal);
-int tpm2_gen_interrupt(struct tpm_chip *chip);
int tpm2_probe(struct tpm_chip *chip);
#endif
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 08c7e23..1c393ba 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -895,23 +895,6 @@ static int tpm2_do_selftest(struct tpm_chip *chip)
}
/**
- * tpm2_gen_interrupt() - generate an interrupt
- * @chip: TPM chip to use
- *
- * 0 is returned when the operation is successful. If a negative number is
- * returned it remarks a POSIX error code. If a positive number is returned
- * it remarks a TPM error.
- */
-int tpm2_gen_interrupt(struct tpm_chip *chip)
-{
- u32 dummy;
-
- return tpm2_get_tpm_pt(chip, 0x100, &dummy,
- "attempting to generate an interrupt");
-}
-EXPORT_SYMBOL_GPL(tpm2_gen_interrupt);
-
-/**
* tpm2_probe() - probe TPM 2.0
* @chip: TPM chip to use
*
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index d66f51b..b67d225 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -575,10 +575,7 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip,
u32 intmask,
/* Generate an interrupt by having the core call through to
* tpm_tis_send
*/
- if (chip->flags & TPM_CHIP_FLAG_TPM2)
- tpm2_gen_interrupt(chip);
- else
- tpm_gen_interrupt(chip);
+ tpm_gen_interrupt(chip);
/* tpm_tis_send will either confirm the interrupt is working or it
* will call disable_irq which undoes all of the above.
--
2.7.4
