From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp
---
kernel/drivers/platform/x86/wmi.c | 119 +++++++++++++++++++++++++++++++++++------------------------
1 files changed, 71 insertions(+), 48 deletions(-)
diff --git a/kernel/drivers/platform/x86/wmi.c b/kernel/drivers/platform/x86/wmi.c
index 387358a..1f80b26 100644
--- a/kernel/drivers/platform/x86/wmi.c
+++ b/kernel/drivers/platform/x86/wmi.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ACPI-WMI mapping driver
*
@@ -11,24 +12,6 @@
* WMI bus infrastructure by Andrew Lutomirski and Darren Hart:
* Copyright (C) 2015 Andrew Lutomirski
* Copyright (C) 2017 VMware, Inc. 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 as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that 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.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -46,6 +29,7 @@
#include <linux/uaccess.h>
#include <linux/uuid.h>
#include <linux/wmi.h>
+#include <linux/fs.h>
#include <uapi/linux/wmi.h>
ACPI_MODULE_NAME("wmi");
@@ -127,11 +111,11 @@
static bool find_guid(const char *guid_string, struct wmi_block **out)
{
- uuid_le guid_input;
+ guid_t guid_input;
struct wmi_block *wblock;
struct guid_block *block;
- if (uuid_le_to_bin(guid_string, &guid_input))
+ if (guid_parse(guid_string, &guid_input))
return false;
list_for_each_entry(wblock, &wmi_block_list, list) {
@@ -144,6 +128,28 @@
}
}
return false;
+}
+
+static const void *find_guid_context(struct wmi_block *wblock,
+ struct wmi_driver *wdriver)
+{
+ const struct wmi_device_id *id;
+ guid_t guid_input;
+
+ if (wblock == NULL || wdriver == NULL)
+ return NULL;
+ if (wdriver->id_table == NULL)
+ return NULL;
+
+ id = wdriver->id_table;
+ while (*id->guid_string) {
+ if (guid_parse(id->guid_string, &guid_input))
+ continue;
+ if (!memcmp(wblock->gblock.guid, &guid_input, 16))
+ return id->context;
+ id++;
+ }
+ return NULL;
}
static int get_subobj_info(acpi_handle handle, const char *pathname,
@@ -196,7 +202,7 @@
/**
* set_required_buffer_size - Sets the buffer size needed for performing IOCTL
* @wdev: A wmi bus device from a driver
- * @instance: Instance index
+ * @length: Required buffer size
*
* Allocates memory needed for buffer, stores the buffer size in that memory
*/
@@ -216,8 +222,8 @@
* @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
* @instance: Instance index
* @method_id: Method ID to call
- * &in: Buffer containing input for the method call
- * &out: Empty buffer to return the method results
+ * @in: Buffer containing input for the method call
+ * @out: Empty buffer to return the method results
*
* Call an ACPI-WMI method
*/
@@ -238,8 +244,8 @@
* @wdev: A wmi bus device from a driver
* @instance: Instance index
* @method_id: Method ID to call
- * &in: Buffer containing input for the method call
- * &out: Empty buffer to return the method results
+ * @in: Buffer containing input for the method call
+ * @out: Empty buffer to return the method results
*
* Call an ACPI-WMI method
*/
@@ -335,9 +341,7 @@
* expensive, but have no corresponding WCxx method. So we
* should not fail if this happens.
*/
- if (acpi_has_method(handle, wc_method))
- wc_status = acpi_execute_simple_method(handle,
- wc_method, 1);
+ wc_status = acpi_execute_simple_method(handle, wc_method, 1);
}
strcpy(method, "WQ");
@@ -367,7 +371,7 @@
* wmi_query_block - Return contents of a WMI block (deprecated)
* @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
* @instance: Instance index
- * &out: Empty buffer to return the contents of the data block to
+ * @out: Empty buffer to return the contents of the data block to
*
* Return the contents of an ACPI-WMI data block to a buffer
*/
@@ -402,7 +406,7 @@
* wmi_set_block - Write to a WMI block
* @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
* @instance: Instance index
- * &in: Buffer containing new values for the data block
+ * @in: Buffer containing new values for the data block
*
* Write the contents of the input buffer to an ACPI-WMI data block
*/
@@ -513,6 +517,7 @@
/**
* wmi_install_notify_handler - Register handler for WMI events
+ * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
* @handler: Function to handle notifications
* @data: Data to be returned to handler when event is fired
*
@@ -523,12 +528,12 @@
{
struct wmi_block *block;
acpi_status status = AE_NOT_EXIST;
- uuid_le guid_input;
+ guid_t guid_input;
if (!guid || !handler)
return AE_BAD_PARAMETER;
- if (uuid_le_to_bin(guid, &guid_input))
+ if (guid_parse(guid, &guid_input))
return AE_BAD_PARAMETER;
list_for_each_entry(block, &wmi_block_list, list) {
@@ -555,6 +560,7 @@
/**
* wmi_uninstall_notify_handler - Unregister handler for WMI events
+ * @guid: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
*
* Unregister handler for events sent to the ACPI-WMI mapper device.
*/
@@ -562,12 +568,12 @@
{
struct wmi_block *block;
acpi_status status = AE_NOT_EXIST;
- uuid_le guid_input;
+ guid_t guid_input;
if (!guid)
return AE_BAD_PARAMETER;
- if (uuid_le_to_bin(guid, &guid_input))
+ if (guid_parse(guid, &guid_input))
return AE_BAD_PARAMETER;
list_for_each_entry(block, &wmi_block_list, list) {
@@ -641,6 +647,25 @@
return find_guid(guid_string, NULL);
}
EXPORT_SYMBOL_GPL(wmi_has_guid);
+
+/**
+ * wmi_get_acpi_device_uid() - Get _UID name of ACPI device that defines GUID
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ *
+ * Find the _UID of ACPI device associated with this WMI GUID.
+ *
+ * Return: The ACPI _UID field value or NULL if the WMI GUID was not found
+ */
+char *wmi_get_acpi_device_uid(const char *guid_string)
+{
+ struct wmi_block *wblock = NULL;
+
+ if (!find_guid(guid_string, &wblock))
+ return NULL;
+
+ return acpi_device_uid(wblock->acpi_device);
+}
+EXPORT_SYMBOL_GPL(wmi_get_acpi_device_uid);
static struct wmi_block *dev_to_wblock(struct device *dev)
{
@@ -778,10 +803,10 @@
if (id == NULL)
return 0;
- while (id->guid_string) {
- uuid_le driver_guid;
+ while (*id->guid_string) {
+ guid_t driver_guid;
- if (WARN_ON(uuid_le_to_bin(id->guid_string, &driver_guid)))
+ if (WARN_ON(guid_parse(id->guid_string, &driver_guid)))
continue;
if (!memcmp(&driver_guid, wblock->gblock.guid, 16))
return 1;
@@ -896,7 +921,7 @@
.read = wmi_char_read,
.open = wmi_char_open,
.unlocked_ioctl = wmi_ioctl,
- .compat_ioctl = wmi_ioctl,
+ .compat_ioctl = compat_ptr_ioctl,
};
static int wmi_dev_probe(struct device *dev)
@@ -911,7 +936,8 @@
dev_warn(dev, "failed to enable device -- probing anyway\n");
if (wdriver->probe) {
- ret = wdriver->probe(dev_to_wdev(dev));
+ ret = wdriver->probe(dev_to_wdev(dev),
+ find_guid_context(wblock, wdriver));
if (ret != 0)
goto probe_failure;
}
@@ -997,19 +1023,19 @@
.remove = wmi_dev_remove,
};
-static struct device_type wmi_type_event = {
+static const struct device_type wmi_type_event = {
.name = "event",
.groups = wmi_event_groups,
.release = wmi_dev_release,
};
-static struct device_type wmi_type_method = {
+static const struct device_type wmi_type_method = {
.name = "method",
.groups = wmi_method_groups,
.release = wmi_dev_release,
};
-static struct device_type wmi_type_data = {
+static const struct device_type wmi_type_data = {
.name = "data",
.groups = wmi_data_groups,
.release = wmi_dev_release,
@@ -1099,8 +1125,7 @@
}
}
-static bool guid_already_parsed(struct acpi_device *device,
- const u8 *guid)
+static bool guid_already_parsed(struct acpi_device *device, const u8 *guid)
{
struct wmi_block *wblock;
@@ -1310,10 +1335,8 @@
wblock->handler(event, wblock->handler_data);
}
- if (debug_event) {
- pr_info("DEBUG Event GUID: %pUL\n",
- wblock->gblock.guid);
- }
+ if (debug_event)
+ pr_info("DEBUG Event GUID: %pUL\n", wblock->gblock.guid);
acpi_bus_generate_netlink_event(
wblock->acpi_device->pnp.device_class,
--
Gitblit v1.6.2