ACPI / PCI / hotplug: Avoid warning when _ADR not present

commit f26ca1d699e8b54a50d9faf82327d3c2072aaedd upstream.

acpiphp_enumerate_slots() walks ACPI namenamespace under
a PCI host bridge with callback register_slot().
register_slot() evaluates _ADR for all the device objects
and emits a warning message for any error.  Some platforms
have _HID device objects (such as HPET and IPMI), which
trigger unnecessary warning messages.

This patch avoids emitting a warning message when a target
device object does not have _ADR.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 1ea75236a15fcd800006612e9cac50c0f0e48f5a..de2abf42ef7e80690f7ef4032eceb729e688d499 100644 (file)
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -279,7 +279,9 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
 
        status = acpi_evaluate_integer(handle, "_ADR", NULL, &adr);
        if (ACPI_FAILURE(status)) {
-               acpi_handle_warn(handle, "can't evaluate _ADR (%#x)\n", status);
+               if (status != AE_NOT_FOUND)
+                       acpi_handle_warn(handle,
+                               "can't evaluate _ADR (%#x)\n", status);
                return AE_OK;
        }