39 	struct file_priv *priv = (struct file_priv *)ptr;  in user_reader_timeout()  local
41 	schedule_work(&priv->work);  in user_reader_timeout()
46 	struct file_priv *priv = container_of(work, struct file_priv, work);  in timeout_work()  local
48 	mutex_lock(&priv->buffer_mutex);  in timeout_work()
49 	atomic_set(&priv->data_pending, 0);  in timeout_work()
50 	memset(priv->data_buffer, 0, sizeof(priv->data_buffer));  in timeout_work()
51 	mutex_unlock(&priv->buffer_mutex);  in timeout_work()
58 	struct file_priv *priv;  in tpm_open()  local
68 	priv = kzalloc(sizeof(*priv), GFP_KERNEL);  in tpm_open()
69 	if (priv == NULL) {  in tpm_open()
74 	priv->chip = chip;  in tpm_open()
75 	atomic_set(&priv->data_pending, 0);  in tpm_open()
76 	mutex_init(&priv->buffer_mutex);  in tpm_open()
77 	setup_timer(&priv->user_read_timer, user_reader_timeout,  in tpm_open()
78 			(unsigned long)priv);  in tpm_open()
79 	INIT_WORK(&priv->work, timeout_work);  in tpm_open()
81 	file->private_data = priv;  in tpm_open()
89 	struct file_priv *priv = file->private_data;  in tpm_read()  local
93 	del_singleshot_timer_sync(&priv->user_read_timer);  in tpm_read()
94 	flush_work(&priv->work);  in tpm_read()
95 	ret_size = atomic_read(&priv->data_pending);  in tpm_read()
101 		mutex_lock(&priv->buffer_mutex);  in tpm_read()
102 		rc = copy_to_user(buf, priv->data_buffer, ret_size);  in tpm_read()
103 		memset(priv->data_buffer, 0, orig_ret_size);  in tpm_read()
107 		mutex_unlock(&priv->buffer_mutex);  in tpm_read()
110 	atomic_set(&priv->data_pending, 0);  in tpm_read()
118 	struct file_priv *priv = file->private_data;  in tpm_write()  local
126 	if (atomic_read(&priv->data_pending) != 0)  in tpm_write()
132 	mutex_lock(&priv->buffer_mutex);  in tpm_write()
135 	    (priv->data_buffer, (void __user *) buf, in_size)) {  in tpm_write()
136 		mutex_unlock(&priv->buffer_mutex);  in tpm_write()
141 	out_size = tpm_transmit(priv->chip, priv->data_buffer,  in tpm_write()
142 				sizeof(priv->data_buffer));  in tpm_write()
144 		mutex_unlock(&priv->buffer_mutex);  in tpm_write()
148 	atomic_set(&priv->data_pending, out_size);  in tpm_write()
149 	mutex_unlock(&priv->buffer_mutex);  in tpm_write()
152 	mod_timer(&priv->user_read_timer, jiffies + (60 * HZ));  in tpm_write()
162 	struct file_priv *priv = file->private_data;  in tpm_release()  local
164 	del_singleshot_timer_sync(&priv->user_read_timer);  in tpm_release()
165 	flush_work(&priv->work);  in tpm_release()
167 	atomic_set(&priv->data_pending, 0);  in tpm_release()
168 	clear_bit(0, &priv->chip->is_open);  in tpm_release()
169 	put_device(priv->chip->pdev);  in tpm_release()
170 	kfree(priv);  in tpm_release()