19 	struct mutex user_lock;  member
47 	mutex_lock(&buf->user_lock);  in iio_request_update_kfifo()
57 	mutex_unlock(&buf->user_lock);  in iio_request_update_kfifo()
106 	if (mutex_lock_interruptible(&kf->user_lock))  in iio_read_kfifo()
113 	mutex_unlock(&kf->user_lock);  in iio_read_kfifo()
125 	mutex_lock(&kf->user_lock);  in iio_kfifo_buf_data_available()
127 	mutex_unlock(&kf->user_lock);  in iio_kfifo_buf_data_available()
136 	mutex_destroy(&kf->user_lock);  in iio_kfifo_buffer_release()
146 	mutex_lock(&kf->user_lock);  in iio_kfifo_buf_space_available()
148 	mutex_unlock(&kf->user_lock);  in iio_kfifo_buf_space_available()
176 	mutex_lock(&kf->user_lock);  in iio_kfifo_write()
181 	mutex_unlock(&kf->user_lock);  in iio_kfifo_write()
215 	mutex_init(&kf->user_lock);  in iio_kfifo_allocate()