Bug 7413 - DMA timeout errors on Dell Latitude XPi CD P150ST
Summary: DMA timeout errors on Dell Latitude XPi CD P150ST
Status: REJECTED INSUFFICIENT_DATA
Alias: None
Product: IO/Storage
Classification: Unclassified
Component: IDE (show other bugs)
Hardware: i386 Linux
: P2 normal
Assignee: Bartlomiej Zolnierkiewicz
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2006-10-25 05:12 UTC by Pana
Modified: 2007-01-16 16:46 UTC (History)
1 user (show)

See Also:
Kernel Version: 2.6.19-rc3
Subsystem:
Regression: ---
Bisected commit-id:

Attachments
Output of lspci -vv (2.80 KB, text/plain)
2006-10-25 05:19 UTC, Pana 		Details
Output of dmesg (9.49 KB, text/plain)
2006-10-25 05:21 UTC, Pana 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Pana 2006-10-25 05:12:38 UTC 
Most recent kernel where this bug did not occur:
Distribution: Debian GNU/Linux 3.1r3
Hardware Environment: Pentium 150Mhz (cpu family 5, cpu model 2, stepping 12)
Software Environment: gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)
Problem Description:
The problem occurs not only on 2.6.19-rc3 but at least already from 2.6.8.
When booting Linux 2.6.19-rc3 (or 2.6.8-16sarge5 so it is not specific
to the current kernels) on a friends laptop, I'm getting a lot of
errormessages from the IDE controller related to DMA problems. When
disabling all DMA related options, the kernel boots fine (and fast).
With DMA enabled, it takes about 1 minute to stumble over the DMA
problems. The laptop is Dell Latitude XPi CD P150ST.

Steps to reproduce:
Boot a 2.6 kernel (I tested 2.6.19-rc3 or 2.6.19-rc2 and 2.6.8) on a Dell
Latitude XPi CD P150ST. It is related to the CMD643 chipset, so it might occur
on other CMD643 using systems too.
Comment 1 Pana 2006-10-25 05:19:46 UTC 
Created attachment 9345 [details]
Output of lspci -vv
Comment 2 Pana 2006-10-25 05:21:42 UTC 
Created attachment 9346 [details]
Output of dmesg
Comment 3 Alan 2006-12-01 12:24:58 UTC 
Bartlomiej is back so transferring to the IDE maintainer to handle
Comment 4 Bartlomiej Zolnierkiewicz 2006-12-16 15:19:19 UTC 
Could you please find the last "good" kernel version?
This seems to be some really old bug (maybe even from 2.4 days).
Comment 5 Adrian Bunk 2007-01-16 16:46:21 UTC 
Please reopen this bug if:
- it is still present in kernel 2.6.20-rc5 and
- you can provide the requested information.
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