147 		struct virtio_pcm_msg *msg;  in virtsnd_pcm_msg_alloc()  local
149 		msg = kzalloc(struct_size(msg, sgs, sg_num + 2), GFP_KERNEL);  in virtsnd_pcm_msg_alloc()
150 		if (!msg)  in virtsnd_pcm_msg_alloc()
153 		msg->substream = vss;  in virtsnd_pcm_msg_alloc()
154 		sg_init_one(&msg->sgs[PCM_MSG_SG_XFER], &msg->xfer,  in virtsnd_pcm_msg_alloc()
155 			    sizeof(msg->xfer));  in virtsnd_pcm_msg_alloc()
156 		sg_init_one(&msg->sgs[PCM_MSG_SG_STATUS], &msg->status,  in virtsnd_pcm_msg_alloc()
157 			    sizeof(msg->status));  in virtsnd_pcm_msg_alloc()
158 		msg->length = period_bytes;  in virtsnd_pcm_msg_alloc()
159 		virtsnd_pcm_sg_from(&msg->sgs[PCM_MSG_SG_DATA], sg_num, data,  in virtsnd_pcm_msg_alloc()
162 		vss->msgs[i] = msg;  in virtsnd_pcm_msg_alloc()
215 		struct virtio_pcm_msg *msg = vss->msgs[i];  in virtsnd_pcm_msg_send()  local
217 			&msg->sgs[PCM_MSG_SG_XFER],  in virtsnd_pcm_msg_send()
218 			&msg->sgs[PCM_MSG_SG_DATA],  in virtsnd_pcm_msg_send()
219 			&msg->sgs[PCM_MSG_SG_STATUS]  in virtsnd_pcm_msg_send()
223 		msg->xfer.stream_id = cpu_to_le32(vss->sid);  in virtsnd_pcm_msg_send()
224 		memset(&msg->status, 0, sizeof(msg->status));  in virtsnd_pcm_msg_send()
227 			rc = virtqueue_add_sgs(vqueue, psgs, 2, 1, msg,  in virtsnd_pcm_msg_send()
230 			rc = virtqueue_add_sgs(vqueue, psgs, 1, 2, msg,  in virtsnd_pcm_msg_send()
288 static void virtsnd_pcm_msg_complete(struct virtio_pcm_msg *msg,  in virtsnd_pcm_msg_complete()  argument
291 	struct virtio_pcm_substream *vss = msg->substream;  in virtsnd_pcm_msg_complete()
304 	    written_bytes <= sizeof(msg->status))  in virtsnd_pcm_msg_complete()
305 		vss->hw_ptr += msg->length;  in virtsnd_pcm_msg_complete()
307 		vss->hw_ptr += written_bytes - sizeof(msg->status);  in virtsnd_pcm_msg_complete()
320 					le32_to_cpu(msg->status.latency_bytes));  in virtsnd_pcm_msg_complete()
339 	struct virtio_pcm_msg *msg;  in virtsnd_pcm_notify_cb()  local
346 		while ((msg = virtqueue_get_buf(queue->vqueue, &written_bytes)))  in virtsnd_pcm_notify_cb()
347 			virtsnd_pcm_msg_complete(msg, written_bytes);  in virtsnd_pcm_notify_cb()
396 	struct virtio_snd_msg *msg;  in virtsnd_pcm_ctl_msg_alloc()  local
404 	msg = virtsnd_ctl_msg_alloc(request_size, response_size, gfp);  in virtsnd_pcm_ctl_msg_alloc()
405 	if (msg) {  in virtsnd_pcm_ctl_msg_alloc()
406 		struct virtio_snd_pcm_hdr *hdr = virtsnd_ctl_msg_request(msg);  in virtsnd_pcm_ctl_msg_alloc()
412 	return msg;  in virtsnd_pcm_ctl_msg_alloc()