linux-kernel - [RFC v3 16/19] arch: um: make UML unflatten device tree when testing

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Date:   Wed, 28 Nov 2018 11:36:33 -0800
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     gregkh@...uxfoundation.org, keescook@...gle.com, mcgrof@...nel.org,
        shuah@...nel.org
Cc:     joel@....id.au, mpe@...erman.id.au, joe@...ches.com, brakmo@...com,
        rostedt@...dmis.org, Tim.Bird@...y.com, khilman@...libre.com,
        julia.lawall@...6.fr, linux-kselftest@...r.kernel.org,
        kunit-dev@...glegroups.com, linux-kernel@...r.kernel.org,
        jdike@...toit.com, richard@....at, linux-um@...ts.infradead.org,
        daniel@...ll.ch, dri-devel@...ts.freedesktop.org, robh@...nel.org,
        dan.j.williams@...el.com, linux-nvdimm@...ts.01.org,
        kieran.bingham@...asonboard.com, frowand.list@...il.com,
        knut.omang@...cle.com, Brendan Higgins <brendanhiggins@...gle.com>
Subject: [RFC v3 16/19] arch: um: make UML unflatten device tree when testing

Make UML unflatten any present device trees when running KUnit tests.

Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
---
 arch/um/kernel/um_arch.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index a818ccef30ca2..bd58ae3bf4148 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -13,6 +13,7 @@
 #include <linux/sched.h>
 #include <linux/sched/task.h>
 #include <linux/kmsg_dump.h>
+#include <linux/of_fdt.h>
 
 #include <asm/pgtable.h>
 #include <asm/processor.h>
@@ -347,6 +348,9 @@ void __init setup_arch(char **cmdline_p)
 	read_initrd();
 
 	paging_init();
+#if IS_ENABLED(CONFIG_OF_UNITTEST)
+	unflatten_device_tree();
+#endif
 	strlcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;
 	setup_hostinfo(host_info, sizeof host_info);
-- 
2.20.0.rc0.387.gc7a69e6b6c-goog