[PATCH 3/8] ideapad: make sure we bind on the correct device

[Ike Panhc]

By reading from method _STA and _CFG to make sure we bind on the correct
VPC2004 device.

Signed-off-by: Ike Panhc <ike.pan@xxxxxxxxxxxxx>
---
 drivers/platform/x86/ideapad_acpi.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/drivers/platform/x86/ideapad_acpi.c b/drivers/platform/x86/ideapad_acpi.c
index 6176597..c1eec70 100644
--- a/drivers/platform/x86/ideapad_acpi.c
+++ b/drivers/platform/x86/ideapad_acpi.c
@@ -328,10 +328,18 @@ MODULE_DEVICE_TABLE(acpi, ideapad_device_ids);
 
 static int ideapad_acpi_add(struct acpi_device *adevice)
 {
-	int i;
+	int i, cfg;
 	int devs_present[5];
 	struct ideapad_private *priv;
 
+	if (read_method_int(adevice->handle, "_STA", &i))
+		return -ENODEV;
+	if (i != 0x0F)
+		return -ENODEV;
+
+	if (read_method_int(adevice->handle, "_CFG", &cfg))
+		return -ENODEV;
+
 	for (i = IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) {
 		devs_present[i] = ideapad_dev_exists(i);
 		if (devs_present[i] < 0)
-- 
1.7.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/