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authorKylene Hall <kjhall@us.ibm.com>2005-06-23 22:01:56 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-24 00:05:25 -0700
commitfe3fd48384af79e7619d3c6b0a020f801ef63c3b (patch)
tree1caf9ce5470e3a18b70547d9bb046ee379faebff /drivers/char/tpm
parent2df7111fc6b0e050b06123379821ece2f8dd5bbc (diff)
downloadop-kernel-dev-fe3fd48384af79e7619d3c6b0a020f801ef63c3b.zip
op-kernel-dev-fe3fd48384af79e7619d3c6b0a020f801ef63c3b.tar.gz
[PATCH] tpm: fix timer initialization
Fix the timer to be inited and modified properly. This work depends on the fixing of the msleep stuff which in patch 1 of this set. Signed-of-by: Kylene Hall <kjhall@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/tpm')
-rw-r--r--drivers/char/tpm/tpm.c24
-rw-r--r--drivers/char/tpm/tpm.h2
2 files changed, 6 insertions, 20 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 2035c15..f7fa3c3 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -434,16 +434,7 @@ int tpm_release(struct inode *inode, struct file *file)
spin_lock(&driver_lock);
chip->num_opens--;
- spin_unlock(&driver_lock);
-
- down(&chip->timer_manipulation_mutex);
- if (timer_pending(&chip->user_read_timer))
- del_singleshot_timer_sync(&chip->user_read_timer);
- else if (timer_pending(&chip->device_timer))
- del_singleshot_timer_sync(&chip->device_timer);
- up(&chip->timer_manipulation_mutex);
-
- kfree(chip->data_buffer);
+ del_singleshot_timer_sync(&chip->user_read_timer);
atomic_set(&chip->data_pending, 0);
pci_dev_put(chip->pci_dev);
@@ -481,13 +472,7 @@ ssize_t tpm_write(struct file * file, const char __user * buf,
up(&chip->buffer_mutex);
/* Set a timeout by which the reader must come claim the result */
- down(&chip->timer_manipulation_mutex);
- init_timer(&chip->user_read_timer);
- chip->user_read_timer.function = user_reader_timeout;
- chip->user_read_timer.data = (unsigned long) chip;
- chip->user_read_timer.expires = jiffies + (60 * HZ);
- add_timer(&chip->user_read_timer);
- up(&chip->timer_manipulation_mutex);
+ mod_timer(&chip->user_read_timer, jiffies + (60 * HZ));
return in_size;
}
@@ -617,9 +602,12 @@ int tpm_register_hardware(struct pci_dev *pci_dev,
init_MUTEX(&chip->buffer_mutex);
init_MUTEX(&chip->tpm_mutex);
- init_MUTEX(&chip->timer_manipulation_mutex);
INIT_LIST_HEAD(&chip->list);
+ init_timer(&chip->user_read_timer);
+ chip->user_read_timer.function = user_reader_timeout;
+ chip->user_read_timer.data = (unsigned long) chip;
+
chip->vendor = entry;
chip->dev_num = -1;
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 1a94a8c3..3a5af7e 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -63,8 +63,6 @@ struct tpm_chip {
struct timer_list user_read_timer; /* user needs to claim result */
struct semaphore tpm_mutex; /* tpm is processing */
- struct timer_list device_timer; /* tpm is processing */
- struct semaphore timer_manipulation_mutex;
struct tpm_vendor_specific *vendor;
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