[PATCH v2] drivers: cpuidle: cpuidle-arm64: include asm/proc-fns.h explicitly

[Will Deacon]

On Wed, Feb 25, 2015 at 12:59:42PM +0000, Lorenzo Pieralisi wrote:
> ARM64 CPUidle driver requires the cpu_do_idle function so that it can
> be used to enter the shallowest idle state, and it is declared in
> asm/proc-fns.h.
> 
> The current ARM64 CPUidle driver does not include asm/proc-fns.h
> explicitly and it has so far relied on implicit inclusion from other
> header files.
> 
> Owing to some header dependencies reshuffling this currently triggers
> build failures when CONFIG_ARM64_64K_PAGES=y:
> 
> drivers/cpuidle/cpuidle-arm64.c: In function "arm64_enter_idle_state"
> drivers/cpuidle/cpuidle-arm64.c:42:3: error: implicit declaration of
> function "cpu_do_idle" [-Werror=implicit-function-declaration]
>    cpu_do_idle();
>    ^
> 
> This patch adds the explicit inclusion of the asm/proc-fns.h header file
> to fix the build breakage and stop relying on implicit asm/proc-fns.h
> inclusion.
> 
> Signed-off-by: Laura Abbott <lauraa at codeaurora.org>
> [lp: rewrote commit log]
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
> Tested-by: Mark Rutland <mark.rutland at arm.com>
> ---
> v2 changes:

Acked-by: Will Deacon <will.deacon at arm.com>

Catalin will pick this up for -rc2, I suspect.

Will

> - Picked up
>   http://lists.infradead.org/pipermail/linux-arm-kernel/2015-February/325523.html
> - Rebased against 4.0-rc1 and rewrote commit log
> 
>  drivers/cpuidle/cpuidle-arm64.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/cpuidle/cpuidle-arm64.c b/drivers/cpuidle/cpuidle-arm64.c
> index 39a2c62..c8bb6c5 100644
> --- a/drivers/cpuidle/cpuidle-arm64.c
> +++ b/drivers/cpuidle/cpuidle-arm64.c
> @@ -19,6 +19,7 @@
>  #include <linux/of.h>
>  
>  #include <asm/cpuidle.h>
> +#include <asm/proc-fns.h>
>  
>  #include "dt_idle_states.h"
>  
> -- 
> 2.2.1
> 
>