From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/hid/hid-hyperv.c | 50 ++++++++++++++++++++++++++++++++++++++------------
1 files changed, 38 insertions(+), 12 deletions(-)
diff --git a/kernel/drivers/hid/hid-hyperv.c b/kernel/drivers/hid/hid-hyperv.c
index 4d1496f..b7704dd 100644
--- a/kernel/drivers/hid/hid-hyperv.c
+++ b/kernel/drivers/hid/hid-hyperv.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2009, Citrix Systems, Inc.
* Copyright (c) 2010, Microsoft Corporation.
* Copyright (c) 2011, Novell Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
*/
#include <linux/init.h>
#include <linux/module.h>
@@ -112,8 +104,8 @@
#pragma pack(pop)
-#define INPUTVSC_SEND_RING_BUFFER_SIZE (10*PAGE_SIZE)
-#define INPUTVSC_RECV_RING_BUFFER_SIZE (10*PAGE_SIZE)
+#define INPUTVSC_SEND_RING_BUFFER_SIZE VMBUS_RING_SIZE(36 * 1024)
+#define INPUTVSC_RECV_RING_BUFFER_SIZE VMBUS_RING_SIZE(36 * 1024)
enum pipe_prot_msg_type {
@@ -200,6 +192,8 @@
if (desc->bLength == 0)
goto cleanup;
+ /* The pointer is not NULL when we resume from hibernation */
+ kfree(input_device->hid_desc);
input_device->hid_desc = kmemdup(desc, desc->bLength, GFP_ATOMIC);
if (!input_device->hid_desc)
@@ -211,6 +205,8 @@
goto cleanup;
}
+ /* The pointer is not NULL when we resume from hibernation */
+ kfree(input_device->report_desc);
input_device->report_desc = kzalloc(input_device->report_desc_size,
GFP_ATOMIC);
@@ -349,6 +345,8 @@
struct mousevsc_dev *input_dev = hv_get_drvdata(device);
struct mousevsc_prt_msg *request;
struct mousevsc_prt_msg *response;
+
+ reinit_completion(&input_dev->wait_event);
request = &input_dev->protocol_req;
memset(request, 0, sizeof(struct mousevsc_prt_msg));
@@ -500,7 +498,7 @@
ret = hid_add_device(hid_dev);
if (ret)
- goto probe_err1;
+ goto probe_err2;
ret = hid_parse(hid_dev);
@@ -549,6 +547,30 @@
return 0;
}
+static int mousevsc_suspend(struct hv_device *dev)
+{
+ vmbus_close(dev->channel);
+
+ return 0;
+}
+
+static int mousevsc_resume(struct hv_device *dev)
+{
+ int ret;
+
+ ret = vmbus_open(dev->channel,
+ INPUTVSC_SEND_RING_BUFFER_SIZE,
+ INPUTVSC_RECV_RING_BUFFER_SIZE,
+ NULL, 0,
+ mousevsc_on_channel_callback,
+ dev);
+ if (ret)
+ return ret;
+
+ ret = mousevsc_connect_to_vsp(dev);
+ return ret;
+}
+
static const struct hv_vmbus_device_id id_table[] = {
/* Mouse guid */
{ HV_MOUSE_GUID, },
@@ -562,6 +584,8 @@
.id_table = id_table,
.probe = mousevsc_probe,
.remove = mousevsc_remove,
+ .suspend = mousevsc_suspend,
+ .resume = mousevsc_resume,
.driver = {
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
},
@@ -578,5 +602,7 @@
}
MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Microsoft Hyper-V Synthetic HID Driver");
+
module_init(mousevsc_init);
module_exit(mousevsc_exit);
--
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