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From: Alan <>
To: Robert Hancock <>
Cc: linux-kernel <>,
	Luigi Genoni <>
Subject: Re: [BUG?] ata disk running maximum at DMA33 with 2.6.20 and new pata driver, NV CK804 ide controller.
Date: Fri, 9 Feb 2007 20:16:08 +0000	[thread overview]
Message-ID: <20070209201608.0c1695db@localhost.localdomain> (raw)
In-Reply-To: <>

> As an aside to this sort of problem, shouldn't we print some kind of 
> loud message in dmesg when we force a high-UDMA-capable device down to 
> UDMA33 due to a 40-wire cable detection? In the case where it truly is a 
> 40-wire cable the user may want to know that and replace the cable, if 
> it isn't it gives more of a hint of why the drive isn't running at full 
> speed..

Send patches. We also probably want to change speed straight from
UDMAlots to UDMA33 if the cable is CBL_UNK so that we can rapidly recover
in the cases where the controller says "I'm crap I don't really know" (eg
ATI and Nvidia without ACPI)

  parent reply	other threads:[~2007-02-09 20:02 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <>
     [not found] ` <>
2007-02-08  4:36   ` Robert Hancock
2007-02-08 12:33     ` l.genoni
2007-02-09 20:16     ` Alan [this message]
2007-02-07  0:19 Luigi Genoni
2007-02-07 10:03 ` venom
2007-02-07 12:20 ` Alan
2007-02-07 12:44   ` l.genoni
  -- strict thread matches above, loose matches on Subject: below --
2007-02-06 23:48 l.genoni

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