x86: microcode_amd: remove (wrong) chipset deivce ID checks

Impact: remove dead/incorrect code

Currently there is no chipset specific ucode. The checks are incorrect
anyway (e.g. pci device IDs are 16 bit and not 8 bit).

Thus I remove the stuff for the time being and will reintroduce it if
it's foreseeable that it is really needed.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 27 deletions

diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index e68e723490a3..2e8af6ef3da9 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -108,7 +108,6 @@ static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig)
 static int get_matching_microcode(int cpu, void *mc, int rev)
 {
         struct microcode_header_amd *mc_header = mc;
-        struct pci_dev *nb_pci_dev, *sb_pci_dev;
         unsigned int current_cpu_id;
         unsigned int equiv_cpu_id = 0x00;
         unsigned int i = 0;
@@ -137,32 +136,11 @@ static int get_matching_microcode(int cpu, void *mc, int rev)
                 return 0;
         }
 
-        /* ucode may be northbridge specific */
-        if (mc_header->nb_dev_id) {
-                nb_pci_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-                                            (mc_header->nb_dev_id & 0xff),
-                                            NULL);
-                if ((!nb_pci_dev) ||
-                    (mc_header->nb_rev_id != nb_pci_dev->revision)) {
-                        printk(KERN_ERR "microcode: CPU%d NB mismatch\n", cpu);
-                        pci_dev_put(nb_pci_dev);
-                        return 0;
-                }
-                pci_dev_put(nb_pci_dev);
-        }
-
-        /* ucode may be southbridge specific */
-        if (mc_header->sb_dev_id) {
-                sb_pci_dev = pci_get_device(PCI_VENDOR_ID_AMD,
-                                            (mc_header->sb_dev_id & 0xff),
-                                            NULL);
-                if ((!sb_pci_dev) ||
-                    (mc_header->sb_rev_id != sb_pci_dev->revision)) {
-                        printk(KERN_ERR "microcode: CPU%d SB mismatch\n", cpu);
-                        pci_dev_put(sb_pci_dev);
-                        return 0;
-                }
-                pci_dev_put(sb_pci_dev);
+        /* ucode might be chipset specific -- currently we don't support this */
+        if (mc_header->nb_dev_id || mc_header->sb_dev_id) {
+                printk(KERN_WARNING "microcode: CPU%d loading of chipset "
+                       "specific code not yet supported\n", cpu);
+                return 0;
         }
 
         if (mc_header->patch_id <= rev)