[PATCH] ARM: omap: fix warning with LPAE build

[tony@atomide.com (Tony Lindgren)]

* Olof Johansson <olof@lixom.net> [131112 22:53]:
> Some omap3 code is throwing a warning:
> arch/arm/mach-omap2/pm34xx.c: In function 'omap3_save_secure_ram_context':
> arch/arm/mach-omap2/pm34xx.c:123:32: warning: cast to pointer from
>   integer of different size [-Wint-to-pointer-cast]
> 
> In reality this code will never actually execute with LPAE=y, since
> Cortex-A8 doesn't support it. So downcasting the __pa() is safe in
> this case.
> 
> Signed-off-by: Olof Johansson <olof@lixom.net>
> ---
> 
> Tony, queue up if you have a fixes branch please, otherwise I can apply
> directly.
> 
>  arch/arm/mach-omap2/pm34xx.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
> index 93b80e5..1f3770a 100644
> --- a/arch/arm/mach-omap2/pm34xx.c
> +++ b/arch/arm/mach-omap2/pm34xx.c
> @@ -120,7 +120,7 @@ static void omap3_save_secure_ram_context(void)
>  		 * will hang the system.
>  		 */
>  		pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON);
> -		ret = _omap_save_secure_sram((u32 *)
> +		ret = _omap_save_secure_sram((u32 *)(unsigned long)
>  				__pa(omap3_secure_ram_storage));
>  		pwrdm_set_next_pwrst(mpu_pwrdm, mpu_next_state);
>  		/* Following is for error tracking, it should not happen */

Hmm maybe the function prototype should be changed instead if
it takes the physical address.

How do you you reproduce this warning? I did not get it after
enabling LPAE in multi_v7_defconfig with current mainline.

Regards,

Tony