On the Toshiba Tecra Z40, after a suspend-to-disk, some FN hotkeys driven by toshiba_acpi are not functional.
Calling the ACPI object ENAB on resume makes them back alive. Signed-off-by: Benjamin Tissoires <[email protected]> --- Hi guys, we noticed this problem on a Toshiba Z40. I kind of brute-forced the thing, and I ended up that calling "ENAB" was making the keys working again (rmmod/insmod the driver was sufficient, and the only command which was different from the resume was this ACPI call). I am really surprised some toshiba laptops do not need this, so I'd prefer that an ACPI expert (Matthew???) gives its wisdom regarding that. Cheers, Benjamin drivers/platform/x86/toshiba_acpi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c index b062d3d..ba75701 100644 --- a/drivers/platform/x86/toshiba_acpi.c +++ b/drivers/platform/x86/toshiba_acpi.c @@ -1857,9 +1857,16 @@ static int toshiba_acpi_resume(struct device *device) { struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device)); u32 result; + acpi_status status; + + if (dev->hotkey_dev) { + status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", + NULL, NULL); + if (ACPI_FAILURE(status)) + pr_info("Unable to re-enable hotkeys\n"); - if (dev->hotkey_dev) hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result); + } return 0; } -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
