35 	struct mutex buf_lock;       /* protect buffer and flags */  member
85 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
88 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
95 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
108 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_read()
132 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
135 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
141 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
150 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
156 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_write()
180 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_poll()
188 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_poll()
215 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_undo_open()
219 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_fops_undo_open()
272 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_recv()
275 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_recv()
292 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_recv()
344 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_send()
347 		mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_send()
358 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_op_send()
385 	mutex_lock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_req_canceled()
389 	mutex_unlock(&proxy_dev->buf_lock);  in vtpm_proxy_tpm_req_canceled()
497 	mutex_init(&proxy_dev->buf_lock);  in vtpm_proxy_create_proxy_dev()