Re: SATA SB600 works in 2.6.20.4 but not in 2.6.21-rc5 with irqpoll parameter

[Tejun Heo <htejun@gmail.com>]

Hello,

Matí­as Alejandro Torres wrote:
> 
>> Can you try with kernel parameter 'acpi=noirq' or 'irqpoll'?
> I made a typo when passing the irqpoll parameter to the kernel. In 
> kernel 2.6.20.4 with the irqpoll parameter passewd to kernel the SATA 
> disk works:
> 
> [    1.320000] ide: Assuming 33MHz system bus speed for PIO modes; 
> override with idebus=xx
> [    1.320000] ahci 0000:00:12.0: version 2.0
> [    1.320000] ACPI: PCI Interrupt 0000:00:12.0[A] -> GSI 22 (level, 
> low) -> IRQ 16
> [    2.324000] ahci 0000:00:12.0: AHCI 0001.0100 32 slots 4 ports 3 Gbps 
> 0xf impl SATA mode
> [    2.324000] ahci 0000:00:12.0: flags: 64bit ncq ilck pm led clo pmp 
> pio slum part
> [    2.324000] ata1: SATA max UDMA/133 cmd 0xF8824D00 ctl 0x0 bmdma 0x0 
> irq 222
> [    2.324000] ata2: SATA max UDMA/133 cmd 0xF8824D80 ctl 0x0 bmdma 0x0 
> irq 222
> [    2.324000] ata3: SATA max UDMA/133 cmd 0xF8824E00 ctl 0x0 bmdma 0x0 
> irq 222
> [    2.324000] ata4: SATA max UDMA/133 cmd 0xF8824E80 ctl 0x0 bmdma 0x0 
> irq 222
> [    2.324000] scsi0 : ahci
> [    2.636000] ata1: SATA link down (SStatus 0 SControl 300)
> [    2.636000] scsi1 : ahci
> [    3.120000] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
> [    3.136000] ata2.00: ATA-7, max UDMA/133, 160836480 sectors: LBA48 
> NCQ (depth 31/32)
> [    3.136000] ata2.00: ata2: dev 0 multi count 16
> [    3.144000] ata2.00: configured for UDMA/133
 >
[--snip--]
> 
> Nice isn't it? I'm happy.

Me happy too.

> In the 2.6.21-rc5 version this hasn't worked (the typo was here too, 
> copy, paste & destroy :P). Here's is the output of dmesg:

That's weird.  So, with irqpoll, 2.6.21-rc5 doesn't work while 2.6.20.4 
does?  I looked through the changelog but nothing looks suspicious at 
the first glance.

Can you try 'pci=nomsi'?  At first, I though you weren't using MSI.  You 
apparently are.

-- 
tejun