linux-kernel - [PTCH] x86: APM: fix build warning when PROC

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Date:   Fri, 14 Sep 2018 15:10:29 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>,
        Jiri Kosina <jikos@...nel.org>
Cc:     Christoph Hellwig <hch@....de>
Subject: [PTCH] x86: APM: fix build warning when PROC_FS is not enabled

From: Randy Dunlap <rdunlap@...radead.org>

Fix build warning in apm_32.c when CONFIG_PROC_FS is not enabled:

../arch/x86/kernel/apm_32.c:1643:12: warning: 'proc_apm_show' defined but not used [-Wunused-function]
 static int proc_apm_show(struct seq_file *m, void *v)

Fixes: 3f3942aca6da ("proc: introduce proc_create_single{,_data}")

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Christoph Hellwig <hch@....de>
Cc: Jiri Kosina <jikos@...nel.org>
Cc: x86@...nel.org
---
 arch/x86/kernel/apm_32.c |    2 ++
 1 file changed, 2 insertions(+)

--- linux-next-20180913.orig/arch/x86/kernel/apm_32.c
+++ linux-next-20180913/arch/x86/kernel/apm_32.c
@@ -1640,6 +1640,7 @@ static int do_open(struct inode *inode,
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 static int proc_apm_show(struct seq_file *m, void *v)
 {
 	unsigned short	bx;
@@ -1719,6 +1720,7 @@ static int proc_apm_show(struct seq_file
 		   units);
 	return 0;
 }
+#endif
 
 static int apm(void *unused)
 {