[patch 1/4] x86: vSMP: Fix is_vsmp_box()

[Ravikiran G Thirumalai]

is_vsmp_box() currently does not work on vSMPowered systems,  as pci cfg
space is not read correctly -- This patch fixes it.

Signed-off-by: Ravikiran Thirumalai <kiran@xxxxxxxxxxxx>

Index: linux.git.trees/arch/x86/kernel/vsmp_64.c
===================================================================
--- linux.git.trees.orig/arch/x86/kernel/vsmp_64.c	2008-03-19 13:30:35.116766719 -0700
+++ linux.git.trees/arch/x86/kernel/vsmp_64.c	2008-03-19 13:39:20.074685590 -0700
@@ -84,8 +84,10 @@ int is_vsmp_box(void)
 		return vsmp;
 
 	/* Check if we are running on a ScaleMP vSMP box */
-	if (read_pci_config(0, 0x1f, 0, PCI_VENDOR_ID) ==
-	     (PCI_VENDOR_ID_SCALEMP || (PCI_DEVICE_ID_SCALEMP_VSMP_CTL << 16)))
+	if ((read_pci_config_16(0, 0x1f, 0, PCI_VENDOR_ID) ==
+	     PCI_VENDOR_ID_SCALEMP) &&
+	    (read_pci_config_16(0, 0x1f, 0, PCI_DEVICE_ID) ==
+	    PCI_DEVICE_ID_SCALEMP_VSMP_CTL))
 		vsmp = 1;
 
 	return vsmp;
--
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