diff --git a/0001-Fix-build-error-when-sys-io.h-is-ot-available.patch b/0001-Fix-build-error-when-sys-io.h-is-ot-available.patch
new file mode 100644
index 0000000..5b5b9f4
--- /dev/null
+++ b/0001-Fix-build-error-when-sys-io.h-is-ot-available.patch
@@ -0,0 +1,69 @@
+From 478099cf46e577c91c9a932d07e4fd6eb83f14d2 Mon Sep 17 00:00:00 2001
+From: Richard Hughes <richard@hughsie.com>
+Date: Wed, 6 Oct 2021 16:50:24 +0100
+Subject: [PATCH] Fix build error when sys/io.h is ot available
+
+---
+ meson.build                         |  3 +++
+ plugins/flashrom/fu-flashrom-cmos.c | 10 +++++++++-
+ 2 files changed, 12 insertions(+), 1 deletion(-)
+
+diff --git a/meson.build b/meson.build
+index 547eb64a..7557cd4a 100644
+--- a/meson.build
++++ b/meson.build
+@@ -314,6 +314,9 @@ endif
+ if cc.has_header('sys/socket.h')
+   conf.set('HAVE_SOCKET_H', '1')
+ endif
++if cc.has_header('sys/io.h')
++  conf.set('HAVE_IO_H', '1')
++endif
+ if cc.has_header('linux/ethtool.h')
+   conf.set('HAVE_ETHTOOL_H', '1')
+ endif
+diff --git a/plugins/flashrom/fu-flashrom-cmos.c b/plugins/flashrom/fu-flashrom-cmos.c
+index 490f0240..77f2cc65 100644
+--- a/plugins/flashrom/fu-flashrom-cmos.c
++++ b/plugins/flashrom/fu-flashrom-cmos.c
+@@ -5,10 +5,13 @@
+  */
+ #include "config.h"
+ 
++#ifdef HAVE_IO_H
+ #include <sys/io.h>
++#endif
+ 
+ #include "fu-flashrom-cmos.h"
+ 
++#ifdef HAVE_IO_H
+ static gboolean
+ fu_flashrom_cmos_write(guint8 addr, guint8 val)
+ {
+@@ -29,10 +32,12 @@ fu_flashrom_cmos_write(guint8 addr, guint8 val)
+ 	/* Check the read value against the written */
+ 	return (tmp == val);
+ }
++#endif
+ 
+ gboolean
+ fu_flashrom_cmos_reset(GError **error)
+ {
++#ifdef HAVE_IO_H
+ 	/* Call ioperm() to grant us access to ports 0x70 and 0x71 */
+ 	if (ioperm(RTC_BASE_PORT, 2, TRUE) < 0) {
+ 		g_set_error_literal(error,
+@@ -50,6 +55,9 @@ fu_flashrom_cmos_reset(GError **error)
+ 	}
+ 
+ 	/* success */
+-
+ 	return TRUE;
++#else
++	g_set_error_literal(error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "no <sys/io.h> support");
++	return FALSE;
++#endif
+ }
+-- 
+2.32.0
+
diff --git a/fwupd.spec b/fwupd.spec
index 847347f..706a471 100644
--- a/fwupd.spec
+++ b/fwupd.spec
@@ -50,6 +50,9 @@ License:   LGPLv2+
 URL:       https://github.com/fwupd/fwupd
 Source0:   http://people.freedesktop.org/~hughsient/releases/%{name}-%{version}.tar.xz
 
+# backported from upstream
+Patch0:    0001-Fix-build-error-when-sys-io.h-is-ot-available.patch
+
 BuildRequires: gettext
 BuildRequires: glib2-devel >= %{glib2_version}
 BuildRequires: libxmlb-devel >= %{libxmlb_version}