From c7a9b09b1a4a1fbccb2ec409daec95f9068d77c0 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 15 Aug 2012 20:51:54 +0000 Subject: ARM: omap: allow building omap44xx without SMP The new omap4 cpuidle implementation currently requires ARCH_NEEDS_CPU_IDLE_COUPLED, which only works on SMP. This patch makes it possible to build a non-SMP kernel for that platform. This is not normally desired for end-users but can be useful for testing. Without this patch, building rand-0y2jSKT results in: drivers/cpuidle/coupled.c: In function 'cpuidle_coupled_poke': drivers/cpuidle/coupled.c:317:3: error: implicit declaration of function '__smp_call_function_single' [-Werror=implicit-function-declaration] It's not clear if this patch is the best solution for the problem at hand. I have made sure that we can now build the kernel in all configurations, but that does not mean it will actually work on an OMAP44xx. Signed-off-by: Arnd Bergmann Acked-by: Santosh Shilimkar Tested-by: Santosh Shilimkar Cc: Kevin Hilman Cc: Tony Lindgren --- include/linux/cpuidle.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 040b13b5c14a..279b1eaa8b73 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -194,6 +194,10 @@ static inline int cpuidle_play_dead(void) {return -ENODEV; } #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a); +#else +static inline void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a) +{ +} #endif /****************************** -- cgit v1.2.3