linux-kernel - [PATCH 2/2] TPM: Fixed tpm release timing

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Message-Id: <1222284857-32042-2-git-send-email-srajiv@linux.vnet.ibm.com>
Date:	Wed, 24 Sep 2008 16:34:17 -0300
From:	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	akpm@...ux-foundation.org, serue@...ux.vnet.ibm.com,
	safford@...son.ibm.com, debora@...ux.vnet.ibm.com,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	Jonathan Corbet <corbet@....net>
Subject: [PATCH 2/2] TPM: Fixed tpm release timing

As pointed by Jonathan Corbet, the timer must be deleted before flushing
the work queue in order to avoid a job being submitted after 
the chip had been released.

Signed-off-by: Rajiv Andrade <srajiv@...ux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@...ux.vnet.ibm.com>
CC: Jonathan Corbet <corbet@....net>
---
 drivers/char/tpm/tpm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index ab03b4d..8d090d3 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -1004,9 +1004,9 @@ int tpm_release(struct inode *inode, struct file *file)
 {
 	struct tpm_chip *chip = file->private_data;
 
+	del_singleshot_timer_sync(&chip->user_read_timer);
 	flush_scheduled_work();
 	file->private_data = NULL;
-	del_singleshot_timer_sync(&chip->user_read_timer);
 	atomic_set(&chip->data_pending, 0);
 	kfree(chip->data_buffer);
 	clear_bit(0, &chip->is_open);
-- 
1.5.6.3

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