Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/net/atm/proc.c b/net/atm/proc.c
index 0b0495a..d79221f 100644
--- a/net/atm/proc.c
+++ b/net/atm/proc.c
@@ -134,7 +134,8 @@
 static void *vcc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
 	v = vcc_walk(seq, 1);
-	*pos += !!PTR_ERR(v);
+	if (v)
+		(*pos)++;
 	return v;
 }