From 07b0120d53a3e7cbc88458a64a4d668fc416100f Mon Sep 17 00:00:00 2001
From: matthieu castet <castet.matthieu@free.fr>
Date: Fri, 6 Jan 2006 01:31:00 -0500
Subject: [PATCH] [PNPACPI] Ignore devices that have no resources

Ignore devices that don't have a _CRS method.
They are useless for the PNP layer as they don't provide any resources.

Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/pnp/pnpacpi/core.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 816479ad217..e77d1feb759 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -131,7 +131,8 @@ static int __init pnpacpi_add_device(struct acpi_device *device)
 	struct pnp_id *dev_id;
 	struct pnp_dev *dev;
 
-	if (!ispnpidacpi(acpi_device_hid(device)) ||
+	status = acpi_get_handle(device->handle, "_CRS", &temp);
+	if (ACPI_FAILURE(status) || !ispnpidacpi(acpi_device_hid(device)) ||
 		is_exclusive_device(device))
 		return 0;