4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> [ Upstream commit 002b87d2aace62b4f3841c3aa43309d2380092be ] 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 Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/x86/kernel/apm_32.c | 2 ++ 1 file changed, 2 insertions(+) --- 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, 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) {