linux-kernel - [PATCH 3.2 121/140] of: fdt: Fix return with value in void function

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Message-ID: <lsq.1519831222.285268246@decadent.org.uk>
Date:   Wed, 28 Feb 2018 15:20:22 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org
Subject: [PATCH 3.2 121/140] of: fdt: Fix return with value in void function

3.2.100-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

Commit 49e67dd17649 "of: fdt: add missing allocation-failure check"
added a "return NULL" statement in __unflatten_device_tree().  When
applied to the 3.2-stable branch, this introduced a compiler warning
(not an error!) because the function returns void here.

Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -389,7 +389,7 @@ static void __unflatten_device_tree(stru
 	mem = (unsigned long)
 		dt_alloc(size + 4, __alignof__(struct device_node));
 	if (!mem)
-		return NULL;
+		return;

 	memset((void *)mem, 0, size);