From: nayna@linux.vnet.ibm.com (Nayna Jain)
To: linux-security-module@vger.kernel.org
Subject: [PATCH 1/3] tpm: move TPM_POLL_SLEEP from tpm_tis_core.c to tpm.h
Date: Wed, 28 Feb 2018 14:18:26 -0500 [thread overview]
Message-ID: <20180228191828.20056-1-nayna@linux.vnet.ibm.com> (raw)
This patch moves TPM_POLL_SLEEP from tpm_tis_core.c to tpm.h, renaming
it to TPM_TIMEOUT_POLL, to follow the existing enum naming
conventions.
Signed-off-by: Nayna Jain <nayna@linux.vnet.ibm.com>
---
drivers/char/tpm/tpm.h | 3 ++-
drivers/char/tpm/tpm_tis_core.c | 10 ++--------
2 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index f895fba4e20d..7e797377e1eb 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -53,7 +53,8 @@ enum tpm_const {
enum tpm_timeout {
TPM_TIMEOUT = 5, /* msecs */
TPM_TIMEOUT_RETRY = 100, /* msecs */
- TPM_TIMEOUT_RANGE_US = 300 /* usecs */
+ TPM_TIMEOUT_RANGE_US = 300, /* usecs */
+ TPM_TIMEOUT_POLL = 1 /* msecs */
};
/* TPM addresses */
diff --git a/drivers/char/tpm/tpm_tis_core.c b/drivers/char/tpm/tpm_tis_core.c
index 183a5f54d875..dc474e7244a6 100644
--- a/drivers/char/tpm/tpm_tis_core.c
+++ b/drivers/char/tpm/tpm_tis_core.c
@@ -31,12 +31,6 @@
#include "tpm.h"
#include "tpm_tis_core.h"
-/* This is a polling delay to check for status and burstcount.
- * As per ddwg input, expectation is that status check and burstcount
- * check should return within few usecs.
- */
-#define TPM_POLL_SLEEP 1 /* msec */
-
static void tpm_tis_clkrun_enable(struct tpm_chip *chip, bool value);
static bool wait_for_tpm_stat_cond(struct tpm_chip *chip, u8 mask,
@@ -90,7 +84,7 @@ static int wait_for_tpm_stat(struct tpm_chip *chip, u8 mask,
}
} else {
do {
- tpm_msleep(TPM_POLL_SLEEP);
+ tpm_msleep(TPM_TIMEOUT_POLL);
status = chip->ops->status(chip);
if ((status & mask) == mask)
return 0;
@@ -232,7 +226,7 @@ static int get_burstcount(struct tpm_chip *chip)
burstcnt = (value >> 8) & 0xFFFF;
if (burstcnt)
return burstcnt;
- tpm_msleep(TPM_POLL_SLEEP);
+ tpm_msleep(TPM_TIMEOUT_POLL);
} while (time_before(jiffies, stop));
return -EBUSY;
}
--
2.13.3
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next reply other threads:[~2018-02-28 19:18 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-28 19:18 Nayna Jain [this message]
2018-02-28 19:18 ` [PATCH 2/3] tpm: reduce poll sleep time between send() and recv() in tpm_transmit() Nayna Jain
2018-03-01 9:22 ` Jarkko Sakkinen
2018-03-01 18:56 ` Nayna Jain
2018-03-05 10:56 ` Jarkko Sakkinen
2018-03-05 18:01 ` Jarkko Sakkinen
2018-03-05 19:07 ` Mimi Zohar
2018-03-06 11:06 ` Jarkko Sakkinen
2018-02-28 19:18 ` [RFC PATCH 3/3] tpm: tpm_msleep() with finer granularity improves performance Nayna Jain
2018-03-01 9:58 ` Jarkko Sakkinen
2018-03-02 8:13 ` Nayna Jain
2018-03-01 8:37 ` [PATCH 1/3] tpm: move TPM_POLL_SLEEP from tpm_tis_core.c to tpm.h Jarkko Sakkinen
2018-03-01 18:44 ` Nayna Jain
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