tristate "External LED on Dell Business Netbooks"
depends on LEDS_CLASS
depends on X86 && ACPI_WMI
- depends on DELL_SMBIOS
help
This adds support for the Latitude 2100 and similar
notebooks that have an external LED.
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/module.h>
-#include <linux/dmi.h>
-#include "../platform/x86/dell-smbios.h"
MODULE_AUTHOR("Louis Davis/Jim Dailey");
MODULE_DESCRIPTION("Dell LED Control Driver");
MODULE_LICENSE("GPL");
#define DELL_LED_BIOS_GUID "F6E4FE6E-909D-47cb-8BAB-C9F6F2F8D396"
-#define DELL_APP_GUID "A80593CE-A997-11DA-B012-B622A1EF5492"
MODULE_ALIAS("wmi:" DELL_LED_BIOS_GUID);
/* Error Result Codes: */
{
int error = 0;
- if (!wmi_has_guid(DELL_LED_BIOS_GUID) && !wmi_has_guid(DELL_APP_GUID))
+ if (!wmi_has_guid(DELL_LED_BIOS_GUID))
return -ENODEV;
- if (wmi_has_guid(DELL_LED_BIOS_GUID)) {
- error = led_off();
- if (error != 0)
- return -ENODEV;
-
- error = led_classdev_register(NULL, &dell_led);
- }
+ error = led_off();
+ if (error != 0)
+ return -ENODEV;
- return error;
+ return led_classdev_register(NULL, &dell_led);
}
static void __exit dell_led_exit(void)
{
- int error = 0;
+ led_classdev_unregister(&dell_led);
- if (wmi_has_guid(DELL_LED_BIOS_GUID)) {
- error = led_off();
- if (error == 0)
- led_classdev_unregister(&dell_led);
- }
+ led_off();
}
module_init(dell_led_init);