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platform/x86: wmi: Remove wmi_get_event_data()

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Since the WMI driver core now takes care of retrieving the
WMI event data even for legacy WMI notify handlers, this
function is no longer used.

Remove it to prevent WMI drivers from messing up the ACPI
firmware on some machines.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Link: https://lore.kernel.org/r/20240901031055.3030-4-W_Armin@gmx.de
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Armin Wolf 2024-09-01 05:10:53 +02:00 committed by Hans de Goede
parent e04e2b760d
commit 79a56f4c8f
2 changed files with 0 additions and 58 deletions
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57
drivers/platform/x86/wmi.c
View File

@ -199,23 +199,6 @@ static int wmidev_match_guid(struct device *dev, const void *data)
return 0; return 0;
} }
static int wmidev_match_notify_id(struct device *dev, const void *data)
{
struct wmi_block *wblock = dev_to_wblock(dev);
const u32 *notify_id = data;
/* Legacy GUID-based functions are restricted to only see
* a single WMI device for each GUID.
*/
if (test_bit(WMI_GUID_DUPLICATED, &wblock->flags))
return 0;
if (wblock->gblock.flags & ACPI_WMI_EVENT && wblock->gblock.notify_id == *notify_id)
return 1;
return 0;
}
static const struct bus_type wmi_bus_type; static const struct bus_type wmi_bus_type;
static struct wmi_device *wmi_find_device_by_guid(const char *guid_string) static struct wmi_device *wmi_find_device_by_guid(const char *guid_string)
@ -235,17 +218,6 @@ static struct wmi_device *wmi_find_device_by_guid(const char *guid_string)
return dev_to_wdev(dev); return dev_to_wdev(dev);
} }
static struct wmi_device *wmi_find_event_by_notify_id(const u32 notify_id)
{
struct device *dev;
dev = bus_find_device(&wmi_bus_type, NULL, &notify_id, wmidev_match_notify_id);
if (!dev)
return ERR_PTR(-ENODEV);
return to_wmi_device(dev);
}
static void wmi_device_put(struct wmi_device *wdev) static void wmi_device_put(struct wmi_device *wdev)
{ {
put_device(&wdev->dev); put_device(&wdev->dev);
@ -649,35 +621,6 @@ acpi_status wmi_remove_notify_handler(const char *guid)
} }
EXPORT_SYMBOL_GPL(wmi_remove_notify_handler); EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
/**
* wmi_get_event_data - Get WMI data associated with an event (deprecated)
*
* @event: Event to find
* @out: Buffer to hold event data
*
* Get extra data associated with an WMI event, the caller needs to free @out.
*
* Return: acpi_status signaling success or error.
*/
acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out)
{
struct wmi_block *wblock;
struct wmi_device *wdev;
acpi_status status;
wdev = wmi_find_event_by_notify_id(event);
if (IS_ERR(wdev))
return AE_NOT_FOUND;
wblock = container_of(wdev, struct wmi_block, dev);
status = get_event_data(wblock, out);
wmi_device_put(wdev);
return status;
}
EXPORT_SYMBOL_GPL(wmi_get_event_data);
/** /**
* wmi_has_guid - Check if a GUID is available * wmi_has_guid - Check if a GUID is available
* @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba

1
include/linux/acpi.h
View File

@ -401,7 +401,6 @@ extern acpi_status wmi_set_block(const char *guid, u8 instance,
extern acpi_status wmi_install_notify_handler(const char *guid, extern acpi_status wmi_install_notify_handler(const char *guid,
wmi_notify_handler handler, void *data); wmi_notify_handler handler, void *data);
extern acpi_status wmi_remove_notify_handler(const char *guid); extern acpi_status wmi_remove_notify_handler(const char *guid);
extern acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out);
extern bool wmi_has_guid(const char *guid); extern bool wmi_has_guid(const char *guid);
extern char *wmi_get_acpi_device_uid(const char *guid); extern char *wmi_get_acpi_device_uid(const char *guid);