linux-kernel - Re: [PATCH 2/3] Import fw-ohci driver.

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Date:	Sun, 10 Dec 2006 16:47:33 -0500
From:	Kristian Høgsberg <krh@...hat.com>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
CC:	Jeff Garzik <jeff@...zik.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] Import fw-ohci driver.

Stefan Richter wrote:
> Kristian Høgsberg wrote:
>> Yup, I've done away with the bitfields and switched to a mix of __le16
>> and __le32 struct fields.
> 
> I suppose the struct should get __attribute__((packed)) then.

I guess it wouldn't harm, but is it really necessary?  Would gcc ever insert 
padding here, all the 32 bit fields a 32 bit aligned, and so are the 16 bit 
fields.

> But is the order of two adjacent __le16 fields (i.e. two halves of a
> quadlet) independent of host byte order?

Yeah, it works for both be and le cpus.  The layout is le specific, which is 
how the host controller wants it.

cheers,
Kristian

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