linux-kernel - [PATCH] arm: mach-dove: Mark dove_io_desc as __maybe

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Date:   Fri,  6 Mar 2020 12:56:38 +0000
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Vincenzo Frascino <vincenzo.frascino@....com>,
        Jason Cooper <jason@...edaemon.net>,
        Andrew Lunn <andrew@...n.ch>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Russell King <linux@...linux.org.uk>
Subject: [PATCH] arm: mach-dove: Mark dove_io_desc as __maybe_unused

Without this, we get the warnings below when CONFIG_MMU is disabled:

linux/arch/arm/mach-dove/common.c:51:24: warning: ‘dove_io_desc’ defined
but not used [-Wunused-variable]
static struct map_desc dove_io_desc[] __initdata = {
                       ^~~~~~~~~~~~

Cc: Jason Cooper <jason@...edaemon.net>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Cc: Gregory Clement <gregory.clement@...tlin.com>
Cc: Russell King <linux@...linux.org.uk>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@....com>
---
 arch/arm/mach-dove/common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-dove/common.c b/arch/arm/mach-dove/common.c
index 01b830afcea9..dbe970e37895 100644
--- a/arch/arm/mach-dove/common.c
+++ b/arch/arm/mach-dove/common.c
@@ -48,7 +48,7 @@
 /*****************************************************************************
  * I/O Address Mapping
  ****************************************************************************/
-static struct map_desc dove_io_desc[] __initdata = {
+static struct map_desc __maybe_unused dove_io_desc[] __initdata = {
 	{
 		.virtual	= (unsigned long) DOVE_SB_REGS_VIRT_BASE,
 		.pfn		= __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE),
-- 
2.25.1