[tip:x86/urgent] x86/APM: Fix build warning when PROC_FS is not enabled

[tip-bot for Randy Dunlap]

Commit-ID:  002b87d2aace62b4f3841c3aa43309d2380092be
Gitweb:     https://git.kernel.org/tip/002b87d2aace62b4f3841c3aa43309d2380092be
Author:     Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
AuthorDate: Fri, 14 Sep 2018 15:10:29 -0700
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Sat, 15 Sep 2018 10:16:25 +0200

x86/APM: Fix build warning when PROC_FS is not enabled

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@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Jiri Kosina <jikos@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/be39ac12-44c2-4715-247f-4dcc3c525b8b@xxxxxxxxxxxxx


---
 arch/x86/kernel/apm_32.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index ec00d1ff5098..f7151cd03cb0 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -1640,6 +1640,7 @@ static int do_open(struct inode *inode, struct file *filp)
 	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 *m, void *v)
 		   units);
 	return 0;
 }
+#endif
 
 static int apm(void *unused)
 {