Comment 21 for bug 175022

This is the dsmeg with: options pata_ali atapi_dma=1

dmesg | grep ata
[ 0.000000] BIOS-e820: 000000001df70000 - 000000001df7f000 (ACPI data)
[ 0.000000] #0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 - 0000001000]
[ 0.000000] PERCPU: Allocating 41628 bytes of per cpu data
[ 0.000000] Kernel command line: root=UUID=d6233106-72c1-4e5a-a66e-cbcdec88416c ro rootflags=data=writeback quiet noresume
[ 0.004000] Memory: 472644k/490944k available (2572k kernel code, 17688k reserved, 1160k data, 424k init, 0k highmem)
[ 0.004000] .data : 0xc03832aa - 0xc04a5680 (1160 kB)
[ 0.393307] ACPI: EC: GPE = 0x18, I/O: command/status = 0x66, data = 0x62
[ 1.675044] Write protecting the kernel read-only data: 936k
[ 2.951158] libata version 3.00 loaded.
[ 3.856681] pata_ali 0000:00:0f.0: can't derive routing for PCI INT A
[ 3.858496] scsi0 : pata_ali
[ 3.858722] scsi1 : pata_ali
[ 3.860074] ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x8080 irq 14
[ 3.860078] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x8088 irq 15
[ 4.024658] ata1.00: ATA-6: HTS726060M9AT00, MH4OA68A, max UDMA/100
[ 4.024664] ata1.00: 117210240 sectors, multi 16: LBA48
[ 4.040609] ata1.00: configured for UDMA/100
[ 4.204382] ata2.00: ATAPI: SONY DVD RW DW-D56A, PFS3, max UDMA/33
[ 4.220261] ata2.00: configured for UDMA/33
[ 4.743664] EXT3-fs: mounted filesystem with writeback data mode.
[ 22.733644] EXT3-fs: mounted filesystem with writeback data mode.
[ 168.124464] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 168.124649] ata2.00: cmd a0/01:00:00:00:10/00:00:00:00:00/a0 tag 0 dma 4096 in
[ 168.124720] ata2.00: status: { DRDY }
[ 173.144095] ata2: link is slow to respond, please be patient (ready=0)
[ 178.128362] ata2: device not ready (errno=-16), forcing hardreset
[ 178.128418] ata2: soft resetting link
[ 178.300783] ata2.00: configured for UDMA/33
[ 178.300903] ata2: EH complete
[ 209.904521] ata2.00: limiting speed to UDMA/25:PIO4
[ 209.904655] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 209.904757] ata2.00: cmd a0/01:00:00:00:10/00:00:00:00:00/a0 tag 0 dma 4096 in
[ 209.904824] ata2.00: status: { DRDY }
[ 214.948090] ata2: link is slow to respond, please be patient (ready=0)
[ 219.936108] ata2: device not ready (errno=-16), forcing hardreset
[ 219.936126] ata2: soft resetting link
[ 220.116294] ata2.00: configured for UDMA/25
[ 220.116330] ata2: EH complete
[ 251.424674] ata2.00: limiting speed to PIO4
[ 251.424805] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
[ 251.424921] ata2.00: cmd a0/01:00:00:00:10/00:00:00:00:00/a0 tag 0 dma 4096 in
[ 251.424991] ata2.00: status: { DRDY }
[ 256.464108] ata2: link is slow to respond, please be patient (ready=0)
[ 261.448063] ata2: device not ready (errno=-16), forcing hardreset
[ 261.448081] ata2: soft resetting link
[ 261.628312] ata2.00: configured for PIO4
[ 261.628354] ata2: EH complete