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-rw-r--r--meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch35
-rw-r--r--meta/recipes-kernel/dtc/dtc_1.6.0.bb2
2 files changed, 37 insertions, 0 deletions
diff --git a/meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch b/meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch
new file mode 100644
index 0000000000..ec825cbf7b
--- /dev/null
+++ b/meta/recipes-kernel/dtc/dtc/0001-fdtdump-Fix-gcc11-warning.patch
@@ -0,0 +1,35 @@
1From 4827e0db6c4f7dea7f4094f49d3bb48ef6dfdc2d Mon Sep 17 00:00:00 2001
2From: David Gibson <david@gibson.dropbear.id.au>
3Date: Wed, 6 Jan 2021 14:52:26 +1100
4Subject: [PATCH] fdtdump: Fix gcc11 warning
5
6In one place, fdtdump abuses fdt_set_magic(), passing it just a small char
7array instead of the full fdt header it expects. That's relying on the
8fact that in fact fdt_set_magic() will only actually access the first 4
9bytes of the buffer.
10
11This trips a new warning in GCC 11 - and it's entirely possible it was
12always UB. So, don't do that.
13
14Upstream-Status: Backport [https://git.kernel.org/pub/scm/utils/dtc/dtc.git/patch/?id=ca16a723fa9dde9c5da80dba567f48715000e77c]
15Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
16---
17 fdtdump.c | 2 +-
18 1 file changed, 1 insertion(+), 1 deletion(-)
19
20diff --git a/fdtdump.c b/fdtdump.c
21index 9613bef..d9fb374 100644
22--- a/fdtdump.c
23+++ b/fdtdump.c
24@@ -217,7 +217,7 @@ int main(int argc, char *argv[])
25 char *p = buf;
26 char *endp = buf + len;
27
28- fdt_set_magic(smagic, FDT_MAGIC);
29+ fdt32_st(smagic, FDT_MAGIC);
30
31 /* poor man's memmem */
32 while ((endp - p) >= FDT_MAGIC_SIZE) {
33--
342.30.1
35
diff --git a/meta/recipes-kernel/dtc/dtc_1.6.0.bb b/meta/recipes-kernel/dtc/dtc_1.6.0.bb
index 92df70d9fc..a407137859 100644
--- a/meta/recipes-kernel/dtc/dtc_1.6.0.bb
+++ b/meta/recipes-kernel/dtc/dtc_1.6.0.bb
@@ -5,6 +5,8 @@ LIC_FILES_CHKSUM = "file://GPL;md5=b234ee4d69f5fce4486a80fdaf4a4263 \
5 5
6SRCREV = "2525da3dba9beceb96651dc2986581871dbeca30" 6SRCREV = "2525da3dba9beceb96651dc2986581871dbeca30"
7 7
8SRC_URI += "file://0001-fdtdump-Fix-gcc11-warning.patch"
9
8S = "${WORKDIR}/git" 10S = "${WORKDIR}/git"
9 11
10BBCLASSEXTEND = "native nativesdk" 12BBCLASSEXTEND = "native nativesdk"