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

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>
Cc: 3.12+ <stable@vger.kernel.org> # 3.12+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Toshi Kani 2013-11-27 13:33:09 -07:00 committed by Rafael J. Wysocki
parent 6ce4eac1f6
commit f26ca1d699
1 changed files with 3 additions and 1 deletions
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4
drivers/pci/hotplug/acpiphp_glue.c
View File

@ -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;
}