Subject: [PATCH] ARM: OMAP4: execute initcall to reserve SRAM for I688 only on OMAP4

From: [email-masked] (Grygorii Strashko)
Date: Mon, 16 Nov 2015 14:24:54 +0200

On 11/16/2015 01:25 PM, Lucas Stach wrote:
> omap_interconnect_sync() is the only user of the SRAM scratch area
> allocated in the omap4_sram_init initcall. The interconnect sync is
> used exclusively in the OMAP4 specific WFI implementation, so there
> is no point in allocating the SRAM scratch on other SoC types.
> 
> Bail out of the initcall if the kernel is not running on OMAP4 to
> avoid a confusing warning about being unable to allocate the SRAM
> needed for I688 handling.
> 
> Signed-off-by: Lucas Stach <[email-masked]>
> Tested-by: Bastian Stender <[email-masked]>
> ---
>   arch/arm/mach-omap2/omap4-common.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
> index 949696b6f17b..6db393a30a28 100644
> --- a/arch/arm/mach-omap2/omap4-common.c
> +++ b/arch/arm/mach-omap2/omap4-common.c
> @@ -131,6 +131,9 @@ static int __init omap4_sram_init(void)
>   	struct device_node *np;
>   	struct gen_pool *sram_pool;
>   
> +	if (!cpu_is_omap44xx())
> +		return 0;

This one affects on am43xx also

> +
>   	np = of_find_compatible_node(NULL, NULL, "ti,omap4-mpu");
>   	if (!np)
>   		pr_warn("%s:Unable to allocate sram needed to handle errata I688\n",

Since all OMAP4+ platforms are now DT based why can't we just return from here silently?

-- 
regards,
-grygorii