x86: vsmp fix x86 vsmp fix is vsmp box cleanup

code got a bit smaller:

arch/x86/kernel/vsmp_64.o:

   text	   data	    bss	    dec	    hex	filename
    205	      4	      0	    209	     d1	vsmp_64.o.before
    181	      4	      0	    185	     b9	vsmp_64.o.after

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
index 13bd82453e4b..1e9a791dbe39 100644
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -120,10 +120,8 @@ int is_vsmp_box(void)
                 return vsmp;
 
         /* Check if we are running on a ScaleMP vSMP box */
-        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))
+        if (read_pci_config(0, 0x1f, 0, PCI_VENDOR_ID) ==
+             (PCI_VENDOR_ID_SCALEMP | (PCI_DEVICE_ID_SCALEMP_VSMP_CTL << 16)))
                 vsmp = 1;
 
         return vsmp;