Re: [PATCH 0/2] fix libata-sff and pata_cmd64x to not crash on boot on parisc

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From: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 18 Apr 2011 15:08:07 -0500

> On Mon, 2011-04-18 at 20:52 +0100, Alan Cox wrote:
>> On Mon, 18 Apr 2011 13:42:27 -0500
>> James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote:
>> 
>> > currently libata-sff is completely ignoring the enabled/disabled status
>> > of the interfaces. 
>> 
>> Yes - it makes some machines work rather better because the BIOSes
>> sometimes mess up the registers. It wad a *deliberate* decision not to
>> port it over and as a result stuff works that failed before. Windows
>> drivers clearly ignore the bits in many cases.
> 
> Well your deliberate decision is crashing my box on boot.  That makes
> this a regression from the IDE cmd64x driver. I hear indirectly there's
> a similar problem on sparc.

Yep, similar problems exist on sparc64, bus errors.
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