On Wed, Feb 14, 2018 at 5:33 PM, John Garry [off-list ref] wrote:

On 14/02/2018 13:53, Andy Shevchenko wrote:

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On Tue, Feb 13, 2018 at 7:45 PM, John Garry [off-list ref] wrote:

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+       sys_port = logic_pio_trans_hwaddr(&host->fwnode, res->start,
len);
+       if (sys_port == -1UL)

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Wouldn't it be better to compare with ULONG_MAX?

Could do, being the same thing. Maybe people prefer -1UL as it saves having
to figure out what ULONG_MAX is :)

-1UL looks confusing.

Another approach is to use ~0UL if that is preferable.

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+       list_for_each_entry(rentry, &resource_list, node)
+               resources[count++] = *rentry->res;

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It has similarities with acpi_create_platform_device().
I guess we can utilize existing code.

For sure, this particular segment is effectively same as part of
acpi_create_platform_device():

Not the same, acpi_create_platform_device() does a bit more than
copying the resources. If it indeed makes no hurt...

        list_for_each_entry(rentry, &resource_list, node)
            acpi_platform_fill_resource(adev, rentry->res,
                            &resources[count++]);

So is your idea to refactor this common segment into a helper function?

...I would go with helper.

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+               char *name = &acpi_indirect_io_mfd_cell[count].name[0];
+               char *pnpid = &acpi_indirect_io_mfd_cell[count].pnpid[0];

Plain x is equivalent to &x[0].

Right, but I thought for arrays that we should use address of x rather than
x itself, no?

x is addressed by it's beginning.

-- 
With Best Regards,
Andy Shevchenko