From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Fix build errors in arch/arc/'s delay.h: - add "extern unsigned long loops_per_jiffy;" - add <asm-generic/types.h> for "u64" In file included from ../drivers/infiniband/hw/cxgb3/cxio_hal.c:32: ../arch/arc/include/asm/delay.h: In function '__udelay': ../arch/arc/include/asm/delay.h:61:12: error: 'u64' undeclared (first use in this function) loops = ((u64) usecs * 4295 * HZ * loops_per_jiffy) >> 32; ^~~ In file included from ../drivers/infiniband/hw/cxgb3/cxio_hal.c:32: ../arch/arc/include/asm/delay.h: In function '__udelay': ../arch/arc/include/asm/delay.h:63:37: error: 'loops_per_jiffy' undeclared (first use in this function) loops = ((u64) usecs * 4295 * HZ * loops_per_jiffy) >> 32; ^~~~~~~~~~~~~~~ Signed-off-by: Randy Dunlap <rdunlap at infradead.org> Cc: Vineet Gupta <vgupta at synopsys.com> Cc: linux-snps-arc at lists.infradead.org Cc: Elad Kanfi <eladkan at mellanox.com> Cc: Leon Romanovsky <leonro at mellanox.com> Cc: Ofer Levi <oferle at mellanox.com> --- v2: add extern for loops_per_jiffy instead of including <linux/delay.h> for it arch/arc/include/asm/delay.h | 3 +++ 1 file changed, 3 insertions(+) --- linux-next-20180723.orig/arch/arc/include/asm/delay.h +++ linux-next-20180723/arch/arc/include/asm/delay.h @@ -17,8 +17,11 @@ #ifndef __ASM_ARC_UDELAY_H #define __ASM_ARC_UDELAY_H +#include <asm-generic/types.h> #include <asm/param.h> /* HZ */ +extern unsigned long loops_per_jiffy; + static inline void __delay(unsigned long loops) { __asm__ __volatile__( --