linux-kernel - Re: libata (pata_via) timeouts causing unusable device: the famous DRDY issue?

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Message-ID: <48372989.3000700@garzik.org>
Date:	Fri, 23 May 2008 16:31:05 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Andras Mantia <amantia@....org>
CC:	linux-kernel@...r.kernel.org
Subject: Re: libata (pata_via) timeouts causing unusable device: the famous
 DRDY issue?

Andras Mantia wrote:
> Hi,
> 
>  since my upgrade to openSUSE 11.0, which comes with 2.6.25.4, soon 
> after I start using my DVD player, I get the following in the log:
> 
> May 23 21:34:04 stein klogd: ata1.00: exception Emask 0x0 SAct 0x0 SErr 
> 0x0 action 0x2 frozen                                                  
> May 23 21:34:04 stein klogd: ata1.00: cmd 
> a0/01:00:00:00:08/00:00:00:00:00/a0 tag 0 dma 2048 in                                                
> May 23 21:34:04 stein klogd:          cdb 28 00 00 00 01 b3 00 00  01 00 
> 00 00 00 00 00 00                                                     
> May 23 21:34:04 stein klogd:          res 
> 40/00:02:00:08:00/00:00:00:00:00/a0 Emask 0x4 (timeout)                                              
> May 23 21:34:04 stein klogd: ata1.00: status: { DRDY }  

DRDY == device ready, and it occurs billions of times per day during 
normal use.

There is no "famous DRDY issue", you are simply seeing timeouts.

Have you tried all of: pci=nomsi, acpi=off, or noapic?

	Jeff

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