From ee320b33b4a316e22612ad6409517fc647f2a37c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 28 Apr 2017 11:44:11 +0200 Subject: [PATCH] of: fix uninitialized variable warning for overlay test gcc warns that an empty device tree would cause undefined behavior: drivers/of/unittest.c: In function 'of_unittest': drivers/of/unittest.c:2199:25: warning: 'last_sibling' may be used uninitialized in this function [-Wmaybe-uninitialized] This adds an initialization of the variable to zero, which we handle correctly. Fixes: 81d0848fc8d2 ("of: Add unit tests for applying overlays") Signed-off-by: Arnd Bergmann Signed-off-by: Rob Herring --- drivers/of/unittest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 12597ff8cfb0..6b8f3e6aa43c 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -2192,7 +2192,7 @@ static __init void of_unittest_overlay_high_level(void) mutex_lock(&of_mutex); - for (np = of_root->child; np; np = np->sibling) + for (last_sibling = np = of_root->child; np; np = np->sibling) last_sibling = np; if (last_sibling) -- 2.20.1