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ACPI / PNP: skip ACPI device nodes associated with physical nodes already 

Make pnpacpi_add_device() ignore ACPI device nodes already associated
with struct device objects representing physical devices.

In particular, this will prevent PNP device objects from being
created for ACPI device nodes already associated with platform
devices.

This change was originally proposed by Mika Westerberg.

[rjw: Modified the subject and changelog.]
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Adrian Hunter 2012-11-23 21:07:12 +01:00 committed by Rafael J. Wysocki
parent 907ddf89d0
commit 2905875344
1 changed files with 4 additions and 0 deletions
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4
drivers/pnp/pnpacpi/core.c
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@ -242,6 +242,10 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
char *pnpid;
struct acpi_hardware_id *id;
/* Skip devices that are already bound */
if (device->physical_node_count)
return 0;
/*
* If a PnPacpi device is not present , the device
* driver should not be loaded.