diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/platform/x86/ideapad_acpi.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/platform/x86/ideapad_acpi.c b/drivers/platform/x86/ideapad_acpi.c index c87693c7dde0..e07d6072e75c 100644 --- a/drivers/platform/x86/ideapad_acpi.c +++ b/drivers/platform/x86/ideapad_acpi.c @@ -379,7 +379,21 @@ static int ideapad_acpi_remove(struct acpi_device *adevice, int type) 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 = { |