4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> [ Upstream commit dbd0fbc76c77daac08ddd245afdcbade0d506e19 ] Add a missing header otherwise compiler warns about missed prototype: CC arch/x86/kernel/tsc_msr.o arch/x86/kernel/tsc_msr.c:73:15: warning: no previous prototype for ‘cpu_khz_from_msr’ [-Wmissing-prototypes] unsigned long cpu_khz_from_msr(void) ^~~~~~~~~~~~~~~~ Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> Link: https://lkml.kernel.org/r/20180629193113.84425-4-andriy.shevchenko@xxxxxxxxxxxxxxx Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/x86/kernel/tsc_msr.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/x86/kernel/tsc_msr.c +++ b/arch/x86/kernel/tsc_msr.c @@ -21,6 +21,7 @@ #include <asm/setup.h> #include <asm/apic.h> #include <asm/param.h> +#include <asm/tsc.h> /* CPU reference clock frequency: in KHz */ #define FREQ_83 83200