Paul, do I understand correctly that the *only* difference between the working setup is that you applied (by hand) the libata patch that Jeff sent out? So plain 2.6.21-rc2 works fine, but with the patch applied, you get no interrupts on the DVD drive? On Sun, 11 Mar 2007, Paul Rolland wrote: > > > It seems like IRQ is not getting through. The first IRQ > > driven command is failing for you. > > Hmmmm.... > > Extract is : > > ata7: PATA max UDMA/100 cmd 0x0000000000019c00 ctl 0x0000000000019882 bmdma 0x0000000000019400 irq 16 > > ata8: PATA max UDMA/100 cmd 0x0000000000019800 ctl 0x0000000000019482 bmdma 0x0000000000019408 irq 16 > > IRQ 16 is IO-APIC-fasteoi for libata, and is not shared... but all the > others libata IRQ are IO-APIC-edge. Ok, that's interesting, although IO-APIC-fasteoi certainly works for others (eg me), but it's still useful. > > * Does giving 'acpi=off' or 'irqpoll' make any difference? > > > > * Can you connect a harddisk to the channel and see whether > > that works? > > Tried that.. Disk is identified as ATA-7: Mastor 6Y080L0, YAR41BW0, max > UDMA/13 and then timeout again... > > Tried then with acpi=off, same result (identify is OK, but then timeout), > and irqpoll and then it was OK !!!! Whee... There were no changes that looked interrupt-related there.. Linus - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
