From: Mathieu Malaterre <malat@debian.org>
Date: Mon, 23 Apr 2018 19:36:38 +0000 (+0200)
Subject: powerpc/mm/radix: Use do/while(0) trick for single statement block
X-Git-Tag: v4.18-rc1~108^2~142
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=85aa4b98419d74dd5cc914e089349800ac4997ee;p=linux.git

powerpc/mm/radix: Use do/while(0) trick for single statement block

In commit 7a22d6321c3d ("powerpc/mm/radix: Update command line parsing for
disable_radix") an `if` statement was added for a possible empty body
(prom_debug).

Fix the following warning, treated as error with W=1:

  arch/powerpc/kernel/prom_init.c:656:46: error: suggest braces around empty body in an ‘if’ statement [-Werror=empty-body]

Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 67f9c157bcc0..425992e393bc 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -103,7 +103,7 @@ int of_workarounds;
 #ifdef DEBUG_PROM
 #define prom_debug(x...)	prom_printf(x)
 #else
-#define prom_debug(x...)
+#define prom_debug(x...)	do { } while (0)
 #endif