linux-kernel - [PATCH 2/2] ARM: rpc: mark ecard_devices_proc_show as __maybe

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Date:   Tue, 14 Aug 2018 11:18:46 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Alexander Viro <viro@...iv.linux.org.uk>,
        Russell King <linux@...linux.org.uk>
Cc:     Christoph Hellwig <hch@....de>, Arnd Bergmann <arnd@...db.de>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] ARM: rpc: mark ecard_devices_proc_show as __maybe_unused

A new build error appeared with CONFIG_PROC_FS disabled:

arch/arm/mach-rpc/ecard.c:646:12: error: 'ecard_devices_proc_show' defined but not used [-Werror=unused-function]

This marks the function as __maybe_unused to let the compiler drop
it silently.

Fixes: 3f3942aca6da ("proc: introduce proc_create_single{,_data}")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/arm/mach-rpc/ecard.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mach-rpc/ecard.c b/arch/arm/mach-rpc/ecard.c
index 6fb51d49ad26..761a629f9e9d 100644
--- a/arch/arm/mach-rpc/ecard.c
+++ b/arch/arm/mach-rpc/ecard.c
@@ -643,7 +643,7 @@ static int ecard_prints(struct seq_file *m, ecard_t *ec)
 	return 0;
 }
 
-static int ecard_devices_proc_show(struct seq_file *m, void *v)
+static int __maybe_unused ecard_devices_proc_show(struct seq_file *m, void *v)
 {
 	ecard_t *ec = cards;
 
-- 
2.18.0