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path: root/drivers/char/tpm/tpm.c
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Diffstat (limited to 'drivers/char/tpm/tpm.c')
-rw-r--r--drivers/char/tpm/tpm.c24
1 files changed, 6 insertions, 18 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index 2035c15ffcc..f7fa3c3a51b 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;