Hello, I found out that pata_ali is not working with a 64 bit kernel, while a 32 bit kernel on the same machine works fine. I'm running a very recent kernel (872aad45, somewhere after 2.6.22-rc7). The problem is that as soon as the module is loaded I get a screaming interrupt: (initramfs) modprobe pata_ali ACPI: PCI Interrupt 0000:05:02.1[A] -> GSI 23 (level, low) -> IRQ 23 scsi10 : pata_ali scsi11 : pata_ali ata11: PATA max UDMA/133 cmd 0x000000000001c880 ctl 0x000000000001c802 bmdma 0x000000000001c080 irq 23 ata12: PATA max UDMA/133 cmd 0x000000000001c480 ctl 0x000000000001c402 bmdma 0x000000000001c088 irq 23 irq 23: nobody cared (try booting with the "irqpoll" option) Call Trace: <IRQ> [<ffffffff80258407>] __report_bad_irq+0x30/0x72 [<ffffffff80258620>] note_interrupt+0x1d7/0x21b [<ffffffff80258ccf>] handle_fasteoi_irq+0xaf/0xd8 [<ffffffff8020c50c>] do_IRQ+0xf4/0x164 [<ffffffff80208631>] mwait_idle+0x0/0x51 [<ffffffff80209bc6>] ret_from_intr+0x0/0xf <EOI> [<ffffffff80208631>] mwait_idle+0x0/0x51 [<ffffffff80208677>] mwait_idle+0x46/0x51 [<ffffffff802085b5>] cpu_idle+0x95/0xcc [<ffffffff805bca4e>] start_kernel+0x2d3/0x2df [<ffffffff805bc138>] _sinittext+0x138/0x13c (with irqpoll it works, but probably the driver is expecting the interrupt on another line). The most interesting difference between 32 and 64 bit is probably this one: -ACPI: PCI Interrupt 0000:05:02.1[A] -> GSI 23 (level, low) -> IRQ 19 +ACPI: PCI Interrupt 0000:05:02.1[A] -> GSI 23 (level, low) -> IRQ 23 pata_ali is driving a PCI card with a PATA port and a SATA port (sata_uli, I also tried loading this one: it doesn't scream but the SATA port is currently not used). I also tried pci=nocpi but the card still gets IRQ 23 when using a 64 bit kernel. The card is this one (lspci on the 32 bit kernel). 05:02.0 Mass storage controller: ALi Corporation ALi M5281 Serial ATA / RAID Host Controller (rev a4) (prog-if 85) Subsystem: ALi Corporation ALi M5281 Serial ATA / RAID Host Controller Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 128, cache line size 80 Interrupt: pin A routed to IRQ 19 Region 0: I/O ports at c000 [size=8] Region 1: I/O ports at bc00 [size=4] Region 2: I/O ports at b880 [size=8] Region 3: I/O ports at b800 [size=4] Region 4: I/O ports at b480 [size=16] Expansion ROM at dfe00000 [disabled] [size=64K] 00: b9 10 81 52 05 00 a0 02 a4 85 80 01 80 80 80 00 10: 01 c0 00 00 01 bc 00 00 81 b8 00 00 01 b8 00 00 20: 81 b4 00 00 00 00 00 00 00 00 00 00 b9 10 81 52 30: 00 00 7f ff 00 00 00 00 00 00 00 00 0e 01 00 00 40: 80 88 08 0f 00 00 55 b1 0a 00 b1 0e 68 00 68 00 50: 01 00 02 00 00 00 00 00 00 00 00 00 09 bc 44 00 60: 00 00 00 00 00 00 00 00 10 03 00 00 00 00 00 00 70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 09 00 44 00 c0: 00 00 00 00 00 00 00 00 10 03 00 00 00 00 00 00 d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 05:02.1 Mass storage controller: ALi Corporation M5228 ALi ATA/RAID Controller (rev c6) (prog-if 85) Subsystem: ALi Corporation: Unknown device 5281 Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap- 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 128 Interrupt: pin A routed to IRQ 19 Region 0: I/O ports at c880 [size=8] Region 1: I/O ports at c800 [size=4] Region 2: I/O ports at c480 [size=8] Region 3: I/O ports at c400 [size=4] Region 4: I/O ports at c080 [size=16] 00: b9 10 28 52 05 00 a0 02 c6 85 80 01 00 80 80 00 10: 81 c8 00 00 01 c8 00 00 81 c4 00 00 01 c4 00 00 20: 81 c0 00 00 00 00 00 00 a0 00 00 00 b9 10 81 52 30: 00 00 00 00 00 00 00 00 00 00 00 00 0e 01 00 00 40: 00 00 00 7f 00 00 00 00 00 10 64 c9 00 00 ba 1a 50: 00 00 00 81 00 88 44 ad 00 00 00 00 01 31 31 31 60: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 70: 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 (the SATA part - M5281 - is not used). The only difference with a 64 bit kernel is: - Interrupt: pin A routed to IRQ 19 + Interrupt: pin A routed to IRQ 23 I'm attaching: the full lspci on 64 bit (lspci-64) the full lspci on 32 bit (lspci-32) full dmesg with 64 bit and irqpoll (dmesg-64) full dmesg with 32 bit (dmesg-32) Tell me if you need further information. TIA, Luca -- This message will self destruct in 5 seconds.
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