edac, mce: Fix wrong mask and macro usage

Correct two mishaps which prevented reporting error type (CECC vs UECC)
and extended error description.

Cc: <stable@kernel.org> # 32.x,  33.x
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/edac/edac_mce_amd.c

@@ -294,7 +294,6 @@ static void amd_decode_ls_mce(u64 mc3_status)
 void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
 {
 	u32 ec  = ERROR_CODE(regs->nbsl);
-	u32 xec = EXT_ERROR_CODE(regs->nbsl);
 
 	if (!handle_errors)
 		return;
@@ -324,7 +323,7 @@ void amd_decode_nb_mce(int node_id, struct err_regs *regs, int handle_errors)
 		pr_cont("\n");
 	}
 
-	pr_emerg("%s.\n", EXT_ERR_MSG(xec));
+	pr_emerg("%s.\n", EXT_ERR_MSG(regs->nbsl));
 
 	if (BUS_ERROR(ec) && nb_bus_decoder)
 		nb_bus_decoder(node_id, regs);
@@ -374,7 +373,7 @@ static int amd_decode_mce(struct notifier_block *nb, unsigned long val,
 		 ((m->status & MCI_STATUS_PCC) ? "yes" : "no"));
 
 	/* do the two bits[14:13] together */
-	ecc = m->status & (3ULL << 45);
+	ecc = (m->status >> 45) & 0x3;
 	if (ecc)
 		pr_cont(", %sECC Error", ((ecc == 2) ? "C" : "U"));