Re: [PATCHv4 2/5] arm: mvebu: support for SMP on 98DX3336 SoC

From: Chris Packham
Date: Wed Jan 18 2017 - 22:47:54 EST


On 19/01/17 13:48, Stephen Boyd wrote:
> On 01/13, Chris Packham wrote:
>> diff --git a/arch/arm/mach-mvebu/platsmp.c b/arch/arm/mach-mvebu/platsmp.c
>> index 46c742d3bd41..59be3ca0464f 100644
>> --- a/arch/arm/mach-mvebu/platsmp.c
>> +++ b/arch/arm/mach-mvebu/platsmp.c
>> @@ -184,3 +184,89 @@ const struct smp_operations armada_xp_smp_ops __initconst = {
>>
>> CPU_METHOD_OF_DECLARE(armada_xp_smp, "marvell,armada-xp-smp",
>> &armada_xp_smp_ops);
>> +
>> +struct resume_controller {
>> + u32 resume_control;
>> + u32 resume_boot_addr;
>> +};
>> +
>> +static const struct resume_controller mv98dx3336_resume_controller = {
>> + .resume_control = 0x08,
>> + .resume_boot_addr = 0x04,
>> +};
>> +
>> +static const struct of_device_id of_mv98dx3236_resume_table[] = {
>> + {
>> + .compatible = "marvell,98dx3336-resume-ctrl",
>> + .data = (void *)&mv98dx3336_resume_controller,
>
> Useless cast?
>
>> + },
>> + { /* end of list */ },
>> +};
>> +
>> +static int mv98dx3236_resume_set_cpu_boot_addr(int hw_cpu, void *boot_addr)
>> +{
>> + const struct of_device_id *match;
>> + struct device_node *np;
>> + void __iomem *base;
>> + struct resume_controller *rc;
>> +
>> + WARN_ON(hw_cpu != 1);
>> +
>> + np = of_find_matching_node_and_match(NULL, of_mv98dx3236_resume_table,
>> + &match);
>> + if (!np)
>> + return -ENODEV;
>> +
>> + base = of_io_request_and_map(np, 0, of_node_full_name(np));
>> + rc = (struct resume_controller *)match->data;
>
> Useless cast?
>
>> + of_node_put(np);
>> + if (IS_ERR(base))
>> + return PTR_ERR(base);
>> +
>> + writel(0, base + rc->resume_control);
>> + writel(virt_to_phys(boot_addr), base + rc->resume_boot_addr);
>> +
>
> Otherwise
>
> Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
>

Thanks for the review. Changes will be in v5.