Merge "soc:qcom: glink_bgcom_xprt: Send tx blocked signal in tx_data" (e71db953) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/soc/qcom/glink_bgcom_xprt.c

+12 −4

Original line number	Diff line number	Diff line
		/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
		/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 and
		@@ -293,13 +293,19 @@ static void send_tx_blocked_signal(struct edge_info *einfo)
		uint64_t reserved3;
		};
		struct read_notif_request read_notif_req = {0};
		int size_in_word = sizeof(read_notif_req)/WORD_SIZE;
		void *src = &read_notif_req;
		int ret;

		read_notif_req.cmd = READ_NOTIF_CMD;

		if (!einfo->tx_blocked_signal_sent) {
		einfo->tx_blocked_signal_sent = true;
		glink_bgcom_xprt_tx_cmd_safe(einfo, &read_notif_req,
		sizeof(read_notif_req));
		ret = bgcom_fifo_write(einfo->bgcom_handle, size_in_word, src);
		if (ret < 0) {
		GLINK_ERR("%s: Err %d send blocked\n", __func__, ret);
		return;
		}
		glink_bgcom_update_tx_avail(einfo, size_in_word);
		}
		}

		@@ -1271,8 +1277,10 @@ static int tx_data(struct glink_transport_if *if_ptr, uint16_t cmd_id,
		/* Need enough space to write the command */
		if (glink_bgcom_get_tx_avail(einfo) <= sizeof(cmd)/WORD_SIZE) {
		einfo->tx_resume_needed = true;
		send_tx_blocked_signal(einfo);
		mutex_unlock(&einfo->write_lock);
		srcu_read_unlock(&einfo->use_ref, rcu_id);
		GLINK_ERR("%s: No Space in Fifo\n", __func__);
		return -EAGAIN;
		}
		cmd.addr = 0;