[CPUFREQ] Longhaul - Add support for CN400

Support for CN400 northbridge when ACPI C3 isn't available.
Tested on Epia SP13000. Thanks to Robert for testing it.

Signed-off-by: Rafał Bilski <rafalbilski@interia.pl>
Signed-off-by: Dave Jones <davej@redhat.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/i386/kernel/cpu/cpufreq/longhaul.c b/arch/i386/kernel/cpu/cpufreq/longhaul.c
index 05946293364c..c548daad3476 100644
--- a/arch/i386/kernel/cpu/cpufreq/longhaul.c
+++ b/arch/i386/kernel/cpu/cpufreq/longhaul.c
@@ -583,6 +583,10 @@ static int enable_arbiter_disable(void)
         if (dev == NULL) {
                 reg = 0x76;
                 dev = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_862X_0, NULL);
+                /* Find CN400 V-Link host bridge */
+                if (dev == NULL)
+                        dev = pci_find_device(PCI_VENDOR_ID_VIA, 0x7259, NULL);
+
         }
         if (dev != NULL) {
                 /* Enable access to port 0x22 */
@@ -734,7 +738,7 @@ print_support_type:
         return 0;
 
 err_acpi:
-        printk(KERN_ERR PFX "No ACPI support. No VT8601 or VT8623 northbridge. Aborting.\n");
+        printk(KERN_ERR PFX "No ACPI support. Unsupported northbridge. Aborting.\n");
         return -ENODEV;
 }