Recent ATA changes break Thinkpad T40p

Søren Schmidt sos at
Sun Aug 22 08:02:10 PDT 2004

Oliver B. Fischer wrote:
> Brian Buchanan wrote:
>> S�ren,
>> It looks like the changes you made to ATA IRQ handling in the last few
>> days broke ATA support on my laptop, an IBM Thinkpad T40p.
>> atapci0: <Intel ICH4 UDMA100 controller> port
>> 0x1860-0x186f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
>> atapci0 at pci0:31:1:      class=0x01018a card=0x052d1014 chip=0x24ca8086
>> rev=0x01 hdr=0x00
>>     vendor   = 'Intel Corporation'
>>     device   = '82801DBM (ICH4-M) UltraATA/100 EIDE Controller'
>>     class    = mass storage
>>     subclass = ATA
> I can confirm this for my R51, which have the same controller as Brians 
> one.

This is *not* a controller problem, its because the CDROM drive has 
buggy firmware that responds to both master and slave selection :(


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