[PATCH] of/irq: Fix msi-map calculation for nonzero rid-base

[Robin Murphy]

On 09/02/16 16:08, Mark Rutland wrote:
[...]

>>>> having msi-map-mask clash with a nonzero rid-base, as that's another
>>>> thing one can easily get wrong.

[...]

>>>> +		if (rid_base & ~map_mask) {
>>>> +			dev_err(parent_dev,
>>>> +				"Invalid msi-map translation - msi-map-mask (0x%x) ignores rid-
>>> base (0x%x)\n",
>>>> +				map_mask, rid_base);
>>>> +			return rid_out;
>>>> +		}

[...]

>>                     msi-map = <0x0100 &its 0x11 0x1>;
>>                     msi-map-mask = <0xff>;
>>
>
> I'd say that this is an inconsistent set of properties, and it's
> probably worth warning if we encounter this. There is no possible way
> that rid-base can be encountered.

Indeed ;)

Robin.

> Thanks,
> Mark.
>