Paul Gortmaker reported the following build failure of the powernv cpufreq driver on UP configs: drivers/cpufreq/powernv-cpufreq.c:241:2: error: implicit declaration of function 'cpu_sibling_mask' [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors make[3]: *** [drivers/cpufreq/powernv-cpufreq.o] Error 1 make[2]: *** [drivers/cpufreq] Error 2 make[1]: *** [drivers] Error 2 make: *** [sub-make] Error 2 The trouble here is that cpu_sibling_mask is defined only in <asm/smp.h>, and <linux/smp.h> includes <asm/smp.h> only in SMP builds. So fix this build failure by explicitly including <asm/smp.h> in the driver, so that we get the definition of cpu_sibling_mask even in UP configurations. Reported-by: Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@xxxxxxxxxxxxxxxxxx> Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> --- drivers/cpufreq/powernv-cpufreq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c index 9edccc6..af49688 100644 --- a/drivers/cpufreq/powernv-cpufreq.c +++ b/drivers/cpufreq/powernv-cpufreq.c @@ -29,6 +29,7 @@ #include <asm/cputhreads.h> #include <asm/reg.h> +#include <asm/smp.h> /* Required for cpu_sibling_mask() in UP configs */ #define POWERNV_MAX_PSTATES 256 -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
