Merge branch 'fix/misc' into topic/misc

1 files changed, 31 insertions, 1 deletions

diff --git a/drivers/edac/edac_mce_amd.c b/drivers/edac/edac_mce_amd.c
index 0c21c370c9d..713ed7d3724 100644
--- a/drivers/edac/edac_mce_amd.c
+++ b/drivers/edac/edac_mce_amd.c
@@ -3,6 +3,7 @@
 
 static bool report_gart_errors;
 static void (*nb_bus_decoder)(int node_id, struct err_regs *regs);
+static void (*orig_mce_callback)(struct mce *m);
 
 void amd_report_gart_errors(bool v)
 {
@@ -362,7 +363,7 @@ static inline void amd_decode_err_code(unsigned int ec)
                 pr_warning("Huh? Unknown MCE error 0x%x\n", ec);
 }
 
-void decode_mce(struct mce *m)
+static void amd_decode_mce(struct mce *m)
 {
         struct err_regs regs;
         int node, ecc;
@@ -420,3 +421,32 @@ void decode_mce(struct mce *m)
 
         amd_decode_err_code(m->status & 0xffff);
 }
+
+static int __init mce_amd_init(void)
+{
+        /*
+         * We can decode MCEs for Opteron and later CPUs:
+         */
+        if ((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) &&
+            (boot_cpu_data.x86 >= 0xf)) {
+                /* safe the default decode mce callback */
+                orig_mce_callback = x86_mce_decode_callback;
+
+                x86_mce_decode_callback = amd_decode_mce;
+        }
+
+        return 0;
+}
+early_initcall(mce_amd_init);
+
+#ifdef MODULE
+static void __exit mce_amd_exit(void)
+{
+        x86_mce_decode_callback = orig_mce_callback;
+}
+
+MODULE_DESCRIPTION("AMD MCE decoder");
+MODULE_ALIAS("edac-mce-amd");
+MODULE_LICENSE("GPL");
+module_exit(mce_amd_exit);
+#endif