| Message ID | 6bb1bb5ed13c03610da3458c35c3a658f868019b.1498044532.git.lukas@wunner.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 9364398204e9..27a9294c843c 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -338,6 +338,9 @@ void acpi_init_properties(struct acpi_device *adev) INIT_LIST_HEAD(&adev->data.subnodes); + if (!adev->handle) + return; + /* * Check if ACPI_DT_NAMESPACE_HID is present and inthat case we fill in * Device Tree compatible properties for this device.
Fabricated devices such as LNXPWRBN lack a handle, causing evaluation of _CCA and _DSD to always fail with AE_BAD_PARAMETER. While that is merely a (negligible) waste of processing power, evaluating a _DSM for them (such as Apple's device properties _DSM which we're about to add) results in an ugly error: ACPI: \: failed to evaluate _DSM (0x1001) Avoid by not evaluating _DSD and the upcoming _DSM for devices without handle. Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> --- drivers/acpi/property.c | 3 +++ 1 file changed, 3 insertions(+)