linux-kernel - [PATCH 3/6] tpm_tis: set timeouts before calling request

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Message-Id: <1246410255-6839-4-git-send-email-adi@vmware.com>
Date:	Tue, 30 Jun 2009 18:04:12 -0700
From:	Andy Isaacson <adi@...are.com>
To:	linux-kernel@...r.kernel.org, tpmdd-devel@...ts.sourceforge.net
Cc:	adi@...apodia.org, Rajiv Andrade <srajiv@...ux.vnet.ibm.com>,
	dds@...gle.com, Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	Shahbaz Khan <shaz.linux@...il.com>, seiji.munetoh@...il.com,
	Andy Isaacson <adi@...are.com>
Subject: [PATCH 3/6] tpm_tis: set timeouts before calling request_locality

On Intel iTPM implementations, the timeouts must be set before
calling request_locality.

Based on a patch from Colin Didier and the tpmdd-devel mailing list:
http://cybione.org/~cdidier/log/data/200812020841/itpm.diff

Signed-off-by: Andy Isaacson <adi@...are.com>
---
 drivers/char/tpm/tpm_tis.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index e859e0e..e0bda02 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -450,6 +450,12 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
 		goto out_err;
 	}
 
+	/* Default timeouts */
+	chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+	chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
+	chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+	chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
+
 	if (request_locality(chip, 0) != 0) {
 		rc = -ENODEV;
 		goto out_err;
@@ -457,12 +463,6 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
 
 	vendor = ioread32(chip->vendor.iobase + TPM_DID_VID(0));
 
-	/* Default timeouts */
-	chip->vendor.timeout_a = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
-	chip->vendor.timeout_b = msecs_to_jiffies(TIS_LONG_TIMEOUT);
-	chip->vendor.timeout_c = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
-	chip->vendor.timeout_d = msecs_to_jiffies(TIS_SHORT_TIMEOUT);
-
 	dev_info(dev,
 		 "1.2 TPM (device-id 0x%X, rev-id %d)\n",
 		 vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
-- 
1.6.3.1

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