From 6af4a022b267750ec436e1bbe23e0cf91fbbd148 Mon Sep 17 00:00:00 2001
From: Michael Brown <mcb30@ipxe.org>
Date: Mon, 26 May 2025 00:22:52 +0100
Subject: [PATCH] [fdtmem] Ignore reservation regions with no fixed addresses

Do not print an error message for unused reservation regions that have
no fixed reserved address ranges.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---
 src/core/fdtmem.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core/fdtmem.c b/src/core/fdtmem.c
index fb44397af..f048e45dd 100644
--- a/src/core/fdtmem.c
+++ b/src/core/fdtmem.c
@@ -119,6 +119,10 @@ static int fdtmem_update_node ( struct memmap_region *region, struct fdt *fdt,
 		/* Count regions */
 		count = fdt_reg_count ( fdt, desc.offset, &regs );
 		if ( count < 0 ) {
+			if ( flags & MEMMAP_FL_RESERVED ) {
+				/* Assume this is a non-fixed reservation */
+				continue;
+			}
 			rc = count;
 			DBGC ( region, "FDTMEM has malformed region %s: %s\n",
 			       desc.name, strerror ( rc ) );