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Diffstat (limited to 'drivers/acpi/dock.c')
-rw-r--r--drivers/acpi/dock.c117
1 files changed, 47 insertions, 70 deletions
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 0c00208b423e..34affbda295e 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* dock.c - ACPI dock station driver
*
* Copyright (C) 2006, 2014, Intel Corp.
* Author: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
* Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * 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.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/kernel.h>
@@ -33,8 +20,6 @@
#include "internal.h"
-ACPI_MODULE_NAME("dock");
-
static bool immediate_undock = 1;
module_param(immediate_undock, bool, 0644);
MODULE_PARM_DESC(immediate_undock, "1 (default) will cause the driver to "
@@ -103,43 +88,29 @@ static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event,
enum dock_callback_type cb_type)
{
struct acpi_device *adev = dd->adev;
+ acpi_hp_fixup fixup = NULL;
+ acpi_hp_uevent uevent = NULL;
+ acpi_hp_notify notify = NULL;
acpi_lock_hp_context();
- if (!adev->hp)
- goto out;
-
- if (cb_type == DOCK_CALL_FIXUP) {
- void (*fixup)(struct acpi_device *);
-
- fixup = adev->hp->fixup;
- if (fixup) {
- acpi_unlock_hp_context();
- fixup(adev);
- return;
- }
- } else if (cb_type == DOCK_CALL_UEVENT) {
- void (*uevent)(struct acpi_device *, u32);
-
- uevent = adev->hp->uevent;
- if (uevent) {
- acpi_unlock_hp_context();
- uevent(adev, event);
- return;
- }
- } else {
- int (*notify)(struct acpi_device *, u32);
-
- notify = adev->hp->notify;
- if (notify) {
- acpi_unlock_hp_context();
- notify(adev, event);
- return;
- }
+ if (adev->hp) {
+ if (cb_type == DOCK_CALL_FIXUP)
+ fixup = adev->hp->fixup;
+ else if (cb_type == DOCK_CALL_UEVENT)
+ uevent = adev->hp->uevent;
+ else
+ notify = adev->hp->notify;
}
- out:
acpi_unlock_hp_context();
+
+ if (fixup)
+ fixup(adev);
+ else if (uevent)
+ uevent(adev, event);
+ else if (notify)
+ notify(adev, event);
}
static struct dock_station *find_dock_station(acpi_handle handle)
@@ -246,7 +217,8 @@ static void hot_remove_dock_devices(struct dock_station *ds)
* between them).
*/
list_for_each_entry_reverse(dd, &ds->dependent_devices, list)
- dock_hotplug_event(dd, ACPI_NOTIFY_EJECT_REQUEST, false);
+ dock_hotplug_event(dd, ACPI_NOTIFY_EJECT_REQUEST,
+ DOCK_CALL_HANDLER);
list_for_each_entry_reverse(dd, &ds->dependent_devices, list)
acpi_bus_trim(dd->adev);
@@ -285,6 +257,7 @@ static void hotplug_dock_devices(struct dock_station *ds, u32 event)
if (!acpi_device_enumerated(adev)) {
int ret = acpi_bus_scan(adev->handle);
+
if (ret)
dev_dbg(&adev->dev, "scan error %d\n", -ret);
}
@@ -393,6 +366,8 @@ static int dock_in_progress(struct dock_station *ds)
/**
* handle_eject_request - handle an undock request checking for error conditions
+ * @ds: The dock station to undock.
+ * @event: The ACPI event number associated with the undock request.
*
* Check to make sure the dock device is still present, then undock and
* hotremove all the devices that may need removing.
@@ -482,6 +457,7 @@ int dock_notify(struct acpi_device *adev, u32 event)
surprise_removal = 1;
event = ACPI_NOTIFY_EJECT_REQUEST;
/* Fall back */
+ fallthrough;
case ACPI_NOTIFY_EJECT_REQUEST:
begin_undock(ds);
if ((immediate_undock && !(ds->flags & DOCK_IS_ATA))
@@ -497,34 +473,34 @@ int dock_notify(struct acpi_device *adev, u32 event)
/*
* show_docked - read method for "docked" file in sysfs
*/
-static ssize_t show_docked(struct device *dev,
+static ssize_t docked_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dock_station *dock_station = dev->platform_data;
- struct acpi_device *adev = NULL;
+ struct acpi_device *adev = acpi_fetch_acpi_dev(dock_station->handle);
- acpi_bus_get_device(dock_station->handle, &adev);
- return snprintf(buf, PAGE_SIZE, "%u\n", acpi_device_enumerated(adev));
+ return sysfs_emit(buf, "%u\n", acpi_device_enumerated(adev));
}
-static DEVICE_ATTR(docked, S_IRUGO, show_docked, NULL);
+static DEVICE_ATTR_RO(docked);
/*
* show_flags - read method for flags file in sysfs
*/
-static ssize_t show_flags(struct device *dev,
+static ssize_t flags_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dock_station *dock_station = dev->platform_data;
- return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags);
+
+ return sysfs_emit(buf, "%d\n", dock_station->flags);
}
-static DEVICE_ATTR(flags, S_IRUGO, show_flags, NULL);
+static DEVICE_ATTR_RO(flags);
/*
* write_undock - write method for "undock" file in sysfs
*/
-static ssize_t write_undock(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
+static ssize_t undock_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
{
int ret;
struct dock_station *dock_station = dev->platform_data;
@@ -536,29 +512,30 @@ static ssize_t write_undock(struct device *dev, struct device_attribute *attr,
begin_undock(dock_station);
ret = handle_eject_request(dock_station, ACPI_NOTIFY_EJECT_REQUEST);
acpi_scan_lock_release();
- return ret ? ret: count;
+ return ret ? ret : count;
}
-static DEVICE_ATTR(undock, S_IWUSR, NULL, write_undock);
+static DEVICE_ATTR_WO(undock);
/*
* show_dock_uid - read method for "uid" file in sysfs
*/
-static ssize_t show_dock_uid(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t uid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
unsigned long long lbuf;
struct dock_station *dock_station = dev->platform_data;
+
acpi_status status = acpi_evaluate_integer(dock_station->handle,
"_UID", NULL, &lbuf);
if (ACPI_FAILURE(status))
- return 0;
+ return 0;
- return snprintf(buf, PAGE_SIZE, "%llx\n", lbuf);
+ return sysfs_emit(buf, "%llx\n", lbuf);
}
-static DEVICE_ATTR(uid, S_IRUGO, show_dock_uid, NULL);
+static DEVICE_ATTR_RO(uid);
-static ssize_t show_dock_type(struct device *dev,
- struct device_attribute *attr, char *buf)
+static ssize_t type_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
struct dock_station *dock_station = dev->platform_data;
char *type;
@@ -572,9 +549,9 @@ static ssize_t show_dock_type(struct device *dev,
else
type = "unknown";
- return snprintf(buf, PAGE_SIZE, "%s\n", type);
+ return sysfs_emit(buf, "%s\n", type);
}
-static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL);
+static DEVICE_ATTR_RO(type);
static struct attribute *dock_attributes[] = {
&dev_attr_docked.attr,
@@ -585,7 +562,7 @@ static struct attribute *dock_attributes[] = {
NULL
};
-static struct attribute_group dock_attribute_group = {
+static const struct attribute_group dock_attribute_group = {
.attrs = dock_attributes
};
generated by cgit (git 2.34.1) at 2025-12-24 21:59:32 +0000