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Commit a48e2338 authored by Mattias Jacobsson's avatar Mattias Jacobsson Committed by Andy Shevchenko
Browse files

platform/x86: wmi: add context pointer field to struct wmi_device_id 



When using wmi_install_notify_handler() to initialize a WMI handler a
data pointer can be supplied which will be passed on to the notification
handler. No similar feature exist when handling WMI events via struct
wmi_driver.

Add a context field pointer to struct wmi_device_id and add a function
find_guid_context() to retrieve that context pointer.

Signed-off-by: default avatarMattias Jacobsson <2pi@mok.nu>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 3e58167a

drivers/platform/x86/wmi.c

+22 −0
Original line number Diff line number Diff line
@@ -146,6 +146,28 @@ static bool find_guid(const char *guid_string, struct wmi_block **out) 
	return false;

}



static const void *find_guid_context(struct wmi_block *wblock,

				      struct wmi_driver *wdriver)

{

	const struct wmi_device_id *id;

	uuid_le 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 (uuid_le_to_bin(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,

			   struct acpi_device_info **info)

{

include/linux/mod_devicetable.h

+1 −0
Original line number Diff line number Diff line
@@ -798,6 +798,7 @@ struct tee_client_device_id { 
 */

struct wmi_device_id {

	const char guid_string[UUID_STRING_LEN+1];

	const void *context;

};



#endif /* LINUX_MOD_DEVICETABLE_H */