40 	struct mutex buf_lock;       /* protect buffer and flags */  member
90 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
93 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
100 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
113 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
137 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
140 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
146 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
155 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
161 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
185 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_poll()
193 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_poll()
220 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_undo_open()
224 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_undo_open()
278 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_recv()
281 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_recv()
298 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_recv()
351 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_send()
354 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_send()
365 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_send()
392 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_req_canceled()
396 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_req_canceled()
506 	mutex_init(&proxy_dev->buf_lock);  in vtpm_proxy_create_proxy_dev()