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-rw-r--r--drivers/char/tpm/tpm.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c
index e5a254a434f..ef991cd8c02 100644
--- a/drivers/char/tpm/tpm.c
+++ b/drivers/char/tpm/tpm.c
@@ -942,12 +942,12 @@ int tpm_release(struct inode *inode, struct file *file)
{
struct tpm_chip *chip = file->private_data;
+ flush_scheduled_work();
spin_lock(&driver_lock);
file->private_data = NULL;
- chip->num_opens--;
del_singleshot_timer_sync(&chip->user_read_timer);
- flush_scheduled_work();
atomic_set(&chip->data_pending, 0);
+ chip->num_opens--;
put_device(chip->dev);
kfree(chip->data_buffer);
spin_unlock(&driver_lock);
@@ -1097,8 +1097,13 @@ struct tpm_chip *tpm_register_hardware(struct device *dev, const struct tpm_vend
/* Driver specific per-device data */
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
- if (chip == NULL)
+ devname = kmalloc(DEVNAME_SIZE, GFP_KERNEL);
+
+ if (chip == NULL || devname == NULL) {
+ kfree(chip);
+ kfree(devname);
return NULL;
+ }
init_MUTEX(&chip->buffer_mutex);
init_MUTEX(&chip->tpm_mutex);
@@ -1124,7 +1129,6 @@ struct tpm_chip *tpm_register_hardware(struct device *dev, const struct tpm_vend
set_bit(chip->dev_num, dev_mask);
- devname = kmalloc(DEVNAME_SIZE, GFP_KERNEL);
scnprintf(devname, DEVNAME_SIZE, "%s%d", "tpm", chip->dev_num);
chip->vendor.miscdev.name = devname;