Re: HPT374 IDE problem with 2.6.21.* kernels

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

Andrew Morton wrote:

>>I saw a similar report yesterday with '2.6.21.1 - 97% wait time on IDE 
>>operations' subject.

>>After upgrading from 2.6.20.7 kernel to 2.6.21.1 my system started to 
>>reset infrequenly the IDE bus. In the syslog DMA timeout, resetting IDE 
>>bus messages appeared. I've changed the two disks attached to the HPT374 
>>controller, and always the first disk had problems. I've replaced cables, 
>>plugged the disks into other IDE ports, but it was only a matter of time 
>>to experience an IDE reset. When I upgraded to 2.6.21.3 the resets became 
>>much more frequent, this time even DMA was disabled too on the first disk. 
>>I turned DMA back Manually with hdparm, and a few seconds of intense IO 
>>activity resulted in another IDE reset.

>>Reverting back to 2.6.20.12 the problem seems to be gone. BTW I'm using 
>>the PATA driver for the HTP374, not the libata one.

>>Is this a known problem/ is there a way I can help locating the cause of 
>>the problem?

    Yes, please post the boot log and the IDE reset log too for starters...

> (cc's added)

WBR, Sergei