If legacy device (SB.ATKD - ASUS010) used by eeepc-laptop
is enabled, don't allow eeepc-wmi to load because:
- eeepc-laptop may be loaded, and can conflict with
eeepc-wmi (they both try to register eeepc::touchpad
led for example).
- the WMI interface is inteded to be used when the OS is
not detected as Win 7. And when this is the case, the
ASUS010 device is disabled.
Signed-off-by: Corentin Chary <corentincj@xxxxxxxxxx>
---
drivers/platform/x86/eeepc-wmi.c | 33 +++++++++++++++++++++++++++++++++
1 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index 52274e2..4d38f98 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -49,6 +49,8 @@ MODULE_AUTHOR("Yong Wang <yong.y.wang@xxxxxxxxx>");
MODULE_DESCRIPTION("Eee PC WMI Hotkey Driver");
MODULE_LICENSE("GPL");
+#define EEEPC_ACPI_HID "ASUS010" /* old _HID used in eeepc-laptop */
+
#define EEEPC_WMI_EVENT_GUID "ABBC0F72-8EA1-11D1-00A0-C90629100000"
#define EEEPC_WMI_MGMT_GUID "97845ED0-4E6D-11DE-8A39-0800200C9A66"
@@ -861,6 +863,27 @@ static struct platform_driver platform_driver = {
},
};
+static acpi_status __init eeepc_wmi_parse_device(acpi_handle handle, u32 level,
+ void *context, void **retval)
+{
+ pr_warning("Found legacy ATKD device (%s)", EEEPC_ACPI_HID);
+ *(bool *)context = true;
+ return AE_CTRL_TERMINATE;
+}
+
+static int __init eeepc_wmi_check_atkd(void)
+{
+ acpi_status status;
+ bool found = false;
+
+ status = acpi_get_devices(EEEPC_ACPI_HID, eeepc_wmi_parse_device,
+ &found, NULL);
+
+ if (ACPI_FAILURE(status) || !found)
+ return 0;
+ return -1;
+}
+
static int __init eeepc_wmi_init(void)
{
int err;
@@ -871,6 +894,16 @@ static int __init eeepc_wmi_init(void)
return -ENODEV;
}
+ if (eeepc_wmi_check_atkd()) {
+ pr_warning("WMI device present, but legacy ATKD device is also "
+ "present and enabled.");
+ pr_warning("You probably booted with acpi_osi=\"Linux\" or "
+ "acpi_osi=\"!Windows 2009\"");
+ pr_warning("Can't load eeepc-wmi, use default acpi_osi "
+ "(preferred) or eeepc-laptop");
+ return -ENODEV;
+ }
+
platform_device = eeepc_wmi_add();
if (IS_ERR(platform_device)) {
err = PTR_ERR(platform_device);
--
1.7.3.2
--
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