Re: [git patches] libata fixes

[Tejun Heo]

Paul Rolland wrote:
> Hell Tejun,
> 
> I've boot-tested this yesterday, with no real luck... 
> 
> 1 - Tested on top of 2.6.21-rc2 (hope it's fine for you),
> 2 - Collected a full dmesg before and after
> 
> Extract is :
> ata7: PATA max UDMA/100 cmd 0x0000000000019c00 ctl 0x0000000000019882 bmdma
> 0x00
> 00000000019400 irq 16
> ata8: PATA max UDMA/100 cmd 0x0000000000019800 ctl 0x0000000000019482 bmdma
> 0x00
> 00000000019408 irq 16
> scsi6 : pata_jmicron
> ata7.00: ATAPI, max UDMA/66
> ata7.00: configured for UDMA/66
> scsi7 : pata_jmicron
> ATA: abnormal status 0x7F on port 0x0000000000019807
> ata7.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
> ata7.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x12 data 36 in
>          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)

It seems like IRQ is not getting through.  The first IRQ driven command
is failing for you.

* Does giving 'acpi=off' or 'irqpoll' make any difference?

* Can you connect a harddisk to the channel and see whether that works?

Thanks.

-- 
tejun
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