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platform/x86: wmi: introduce helper to retrieve event data 

Previously, `acpi_wmi_notify_handler()` and `wmi_get_event_data()`
shared more or less the exact same code to query the data for
a particular event.

Introduce a function to get rid of the duplication, and use it
from `acpi_wmi_notify_handler()` and `wmi_get_event_data()`.

Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Link: https://lore.kernel.org/r/20210904175450.156801-30-pobrn@protonmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Barnabás Pőcze 2021-09-04 17:56:41 +00:00 committed by Hans de Goede
parent 51142a0886
commit 25be44f6e2
1 changed files with 20 additions and 22 deletions
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42
drivers/platform/x86/wmi.c
View File

@ -219,6 +219,22 @@ static inline acpi_object_type get_param_acpi_type(const struct wmi_block *wbloc
return ACPI_TYPE_BUFFER;
}
static acpi_status get_event_data(const struct wmi_block *wblock, struct acpi_buffer *out)
{
union acpi_object param = {
.integer = {
.type = ACPI_TYPE_INTEGER,
.value = wblock->gblock.notify_id,
}
};
struct acpi_object_list input = {
.count = 1,
.pointer = &param,
};
return acpi_evaluate_object(wblock->acpi_device->handle, "_WED", &input, out);
}
/*
* Exported WMI functions
*/
@ -623,22 +639,13 @@ EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
*/
acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out)
{
struct acpi_object_list input;
union acpi_object params[1];
struct wmi_block *wblock;
input.count = 1;
input.pointer = params;
params[0].type = ACPI_TYPE_INTEGER;
params[0].integer.value = event;
list_for_each_entry(wblock, &wmi_block_list, list) {
struct guid_block *gblock = &wblock->gblock;
if ((gblock->flags & ACPI_WMI_EVENT) &&
(gblock->notify_id == event))
return acpi_evaluate_object(wblock->acpi_device->handle,
"_WED", &input, out);
if ((gblock->flags & ACPI_WMI_EVENT) && gblock->notify_id == event)
return get_event_data(wblock, out);
}
return AE_NOT_FOUND;
@ -1303,21 +1310,12 @@ static void acpi_wmi_notify_handler(acpi_handle handle, u32 event,
/* If a driver is bound, then notify the driver. */
if (wblock->dev.dev.driver) {
struct wmi_driver *driver = drv_to_wdrv(wblock->dev.dev.driver);
struct acpi_object_list input;
union acpi_object params[1];
struct acpi_buffer evdata = { ACPI_ALLOCATE_BUFFER, NULL };
acpi_status status;
input.count = 1;
input.pointer = params;
params[0].type = ACPI_TYPE_INTEGER;
params[0].integer.value = event;
status = acpi_evaluate_object(wblock->acpi_device->handle,
"_WED", &input, &evdata);
status = get_event_data(wblock, &evdata);
if (ACPI_FAILURE(status)) {
dev_warn(&wblock->dev.dev,
"failed to get event data\n");
dev_warn(&wblock->dev.dev, "failed to get event data\n");
return;
}