EDAC, MCE, AMD: Simplify NB MCE decoder interface

Drop third nbcfg argument which is old remains and not required anymore.

No functionality change.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index b81c5da..d0864d9 100644
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -9,7 +9,7 @@
 static u8 nb_err_cpumask = 0xf;
 
 static bool report_gart_errors;
-static void (*nb_bus_decoder)(int node_id, struct mce *m, u32 nbcfg);
+static void (*nb_bus_decoder)(int node_id, struct mce *m);
 
 void amd_report_gart_errors(bool v)
 {
@@ -17,13 +17,13 @@
 }
 EXPORT_SYMBOL_GPL(amd_report_gart_errors);
 
-void amd_register_ecc_decoder(void (*f)(int, struct mce *, u32))
+void amd_register_ecc_decoder(void (*f)(int, struct mce *))
 {
 	nb_bus_decoder = f;
 }
 EXPORT_SYMBOL_GPL(amd_register_ecc_decoder);
 
-void amd_unregister_ecc_decoder(void (*f)(int, struct mce *, u32))
+void amd_unregister_ecc_decoder(void (*f)(int, struct mce *))
 {
 	if (nb_bus_decoder) {
 		WARN_ON(nb_bus_decoder != f);
@@ -592,11 +592,12 @@
 	return false;
 }
 
-void amd_decode_nb_mce(int node_id, struct mce *m, u32 nbcfg)
+void amd_decode_nb_mce(struct mce *m)
 {
 	struct cpuinfo_x86 *c = &boot_cpu_data;
-	u16 ec   = EC(m->status);
-	u8 xec   = XEC(m->status, 0x1f);
+	int node_id = amd_get_nb_id(m->extcpu);
+	u16 ec = EC(m->status);
+	u8 xec = XEC(m->status, 0x1f);
 
 	pr_emerg(HW_ERR "Northbridge Error (node %d): ", node_id);
 
@@ -630,7 +631,7 @@
 
 	if (c->x86 == 0xf || c->x86 == 0x10 || c->x86 == 0x15)
 		if ((xec == 0x8 || xec == 0x0) && nb_bus_decoder)
-			nb_bus_decoder(node_id, m, nbcfg);
+			nb_bus_decoder(node_id, m);
 
 	return;
 
@@ -746,7 +747,7 @@
 {
 	struct mce *m = (struct mce *)data;
 	struct cpuinfo_x86 *c = &boot_cpu_data;
-	int node, ecc;
+	int ecc;
 
 	if (amd_filter_mce(m))
 		return NOTIFY_STOP;
@@ -795,8 +796,7 @@
 		break;
 
 	case 4:
-		node = amd_get_nb_id(m->extcpu);
-		amd_decode_nb_mce(node, m, 0);
+		amd_decode_nb_mce(m);
 		break;
 
 	case 5: