920-device_tree_cmdline.patch

From e08bcbbaa52fcc41f02743fd2e62a33255ce52da Mon Sep 17 00:00:00 2001
From: OpenWrt community <openwrt-devel@lists.openwrt.org>
Date: Wed, 13 Jul 2022 13:52:28 +0200
Subject: [PATCH] of/ftd: add device tree cmdline

---
 drivers/of/fdt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 59a7a9ee58ef..3b0b62b410dd 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -1158,6 +1158,9 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
 	p = of_get_flat_dt_prop(node, "bootargs", &l);
 	if (p != NULL && l > 0)
 		strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
+	p = of_get_flat_dt_prop(node, "bootargs-append", &l);
+	if (p != NULL && l > 0)
+		strlcat(data, p, min_t(int, strlen(data) + (int)l, COMMAND_LINE_SIZE));
 
 	/*
 	 * CONFIG_CMDLINE is meant to be a default in case nothing else
--