x86: Simplify code by removing a !SMP #ifdefs from 'struct cpuinfo_x86'

[pandora-kernel.git] / arch / x86 / kernel / microcode_amd.c

diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index d494799..ac52c15 100644 (file)
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -300,13 +300,33 @@ free_table:
        return state;
 }
 
+/*
+ * AMD microcode firmware naming convention, up to family 15h they are in
+ * the legacy file:
+ *
+ *    amd-ucode/microcode_amd.bin
+ *
+ * This legacy file is always smaller than 2K in size.
+ *
+ * Starting at family 15h they are in family specific firmware files:
+ *
+ *    amd-ucode/microcode_amd_fam15h.bin
+ *    amd-ucode/microcode_amd_fam16h.bin
+ *    ...
+ *
+ * These might be larger than 2K.
+ */
 static enum ucode_state request_microcode_amd(int cpu, struct device *device)
 {
-       const char *fw_name = "amd-ucode/microcode_amd.bin";
+       char fw_name[36] = "amd-ucode/microcode_amd.bin";
        const struct firmware *fw;
        enum ucode_state ret = UCODE_NFOUND;
+       struct cpuinfo_x86 *c = &cpu_data(cpu);
+
+       if (c->x86 >= 0x15)
+               snprintf(fw_name, sizeof(fw_name), "amd-ucode/microcode_amd_fam%.2xh.bin", c->x86);
 
-       if (request_firmware(&fw, fw_name, device)) {
+       if (request_firmware(&fw, (const char *)fw_name, device)) {
                pr_err("failed to load file %s\n", fw_name);
                goto out;
        }