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
--
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