Re: [PATCH v3 27/51] PCI: Move ISA ioport align out of calculate_iosize

From: Yinghai Lu
Date: Wed Aug 19 2015 - 02:32:15 EST


On Mon, Aug 17, 2015 at 9:11 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> On Mon, Jul 27, 2015 at 04:29:45PM -0700, Yinghai Lu wrote:
>> So we could unify calculate_iosize and calculate_memsize later.
>
> Please make this a complete sentence, not just a continuation of the
> summary line.
>
>> when one bridge have several children devices, and every devices
>> have several io port resources and resource size < 0x400.
>
> This isn't a sentence either, so I'm not sure what this is supposed to
> mean.

will change to:

Subject: [PATCH] PCI: Move ISA io port align out of calculate_iosize()

We can move ISA io port align out of calculate_iosize(),
so we could unify calculate_iosize and calculate_memsize later.

That extra aligning or offset is to work around ISA devices:
When one bridge have several children devices, and every device
has several io port resources and resource size < 0x400.
We need to check size, and add extra size to make sure bit8/9
to be zero.
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