ideapad: check VPC bit before sync rfkill hw status
Check VPC bit to make sure the HW rfkill is touched.
Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
diff --git a/drivers/platform/x86/ideapad_acpi.c b/drivers/platform/x86/ideapad_acpi.c
index c87693c..e07d607 100644
--- a/drivers/platform/x86/ideapad_acpi.c
+++ b/drivers/platform/x86/ideapad_acpi.c
@@ -379,7 +379,21 @@
static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
{
- ideapad_sync_rfk_state(adevice);
+ acpi_handle handle = adevice->handle;
+ unsigned long vpc1, vpc2, vpc_bit;
+
+ if (read_ec_data(handle, 0x10, &vpc1))
+ return;
+ if (read_ec_data(handle, 0x1A, &vpc2))
+ return;
+
+ vpc1 = (vpc2 << 8) | vpc1;
+ for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
+ if (test_bit(vpc_bit, &vpc1)) {
+ if (vpc_bit == 9)
+ ideapad_sync_rfk_state(adevice);
+ }
+ }
}
static struct acpi_driver ideapad_acpi_driver = {