From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Fix a build warning in toshiba_acpi.c when CONFIG_PROC_FS is not enabled by marking the unused function as __maybe_unused. ../drivers/platform/x86/toshiba_acpi.c:1685:12: warning: 'version_proc_show' defined but not used [-Wunused-function] Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Azael Avalos <coproscefalo@xxxxxxxxx> Cc: platform-driver-x86@xxxxxxxxxxxxxxx Cc: Darren Hart <dvhart@xxxxxxxxxxxxx> Cc: Andy Shevchenko <andy@xxxxxxxxxxxxx> --- drivers/platform/x86/toshiba_acpi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- linux-next-20180706.orig/drivers/platform/x86/toshiba_acpi.c +++ linux-next-20180706/drivers/platform/x86/toshiba_acpi.c @@ -34,6 +34,7 @@ #define TOSHIBA_ACPI_VERSION "0.24" #define PROC_INTERFACE_VERSION 1 +#include <linux/compiler.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> @@ -1682,7 +1683,7 @@ static const struct file_operations keys .write = keys_proc_write, }; -static int version_proc_show(struct seq_file *m, void *v) +static int __maybe_unused version_proc_show(struct seq_file *m, void *v) { seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION); seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);