linux-kernel - Re: v2.6.29-rc2 gets HSM violations for CD drive

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Date:	Sat, 24 Jan 2009 01:28:01 +0100
From:	Mikael Pettersson <mikpe@...uu.se>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-ide@...r.kernel.org
Subject: Re: v2.6.29-rc2 gets HSM violations for CD drive

Larry Finger writes:
 > Sometime since v2.6.28, one of my systems started getting libata
 > errors for my CD drive.
 > 
 > I have started bisecting this problem, but that system is very slow so
 > it will likely take a while.
 > 
 > The ide/ata parts of the dmesg output:
 > 
 > =============================
 > 
 > SCSI subsystem initialized
 > libata version 3.00 loaded.
 > pata_ali 0000:00:0f.0: can't derive routing for PCI INT A
 > pata_ali 0000:00:0f.0: setting latency timer to 64
 > scsi0 : pata_ali
 > scsi1 : pata_ali
 > ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xfc90 irq 14
 > ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xfc98 irq 15
 > ata1.00: ATA-6: HTS541010G9AT00, MBZOA60A, max UDMA/100
 > ata1.00: 195371568 sectors, multi 16: LBA48
 > ata1.00: configured for MWDMA2
 > scsi 0:0:0:0: Direct-Access     ATA      HTS541010G9AT00  MBZO PQ: 0
 > ANSI: 5
 > ata2.00: ATAPI: SR242S, z03, max MWDMA2
 > ata2.00: WARNING: ATAPI DMA disabled for reliablity issues.  It can be
 > enabled
 > ata2.00: WARNING: via pata_ali.atapi_dma modparam or corresponding
 > sysfs node.
 > ata2.00: configured for PIO4
 > scsi 1:0:0:0: CD-ROM            MITSUMI  CD-ROM SR242S !A z03  PQ: 0
 > ANSI: 5
 > Uniform Multi-Platform E-IDE driver
 > BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
 > udevd version 128 started
 > ACPI: EC: missing confirmations, switch off interrupt mode.
 > Driver 'sd' needs updating - please use bus_type methods
 > sd 0:0:0:0: [sda] 195371568 512-byte hardware sectors: (100 GB/93.1 GiB)
 > sd 0:0:0:0: [sda] Write Protect is off
 > sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
 > sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
 > support DPO or FUA
 > sd 0:0:0:0: [sda] 195371568 512-byte hardware sectors: (100 GB/93.1 GiB)
 > sd 0:0:0:0: [sda] Write Protect is off
 > sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
 > sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't
 > support DPO or FUA
 >  sda1 sda2 sda3 sda4
 > sd 0:0:0:0: [sda] Attached SCSI disk
 > ACPI: PCI Interrupt Link [LNK5] enabled at IRQ 9
 > PCI: setting IRQ 9 as level-triggered
 > kjournald starting.  Commit interval 5 seconds
 > EXT3 FS on sda3, internal journal
 > EXT3-fs: mounted filesystem with ordered data mode.
 > EXT3 (no)acl options not supported
 > EXT3 (no)user_xattr options not supported
 > udevd version 128 started
 > pci_hotplug: PCI Hot Plug PCI Core version: 0.5
 > sd 0:0:0:0: Attached scsi generic sg0 type 0
 > scsi 1:0:0:0: Attached scsi generic sg1 type 5
 > shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
 > Driver 'sr' needs updating - please use bus_type methods
 > ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
 > ata2.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
 >          cdb 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 >          res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x3 (HSM violation)
 > ata2.00: status: { DRDY ERR }
 > ata2: soft resetting link
 > ata2.00: configured for PIO4
 > ata2: EH complete
 > sr0: scsi3-mmc drive: 24x/24x cd/rw xa/form2 cdda tray
 > Uniform CD-ROM driver Revision: 3.20
 > sr 1:0:0:0: Attached scsi CD-ROM sr0
 > ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
 > ata2.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0
 >          cdb 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
 >          res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x3 (HSM violation)
 > ata2.00: status: { DRDY ERR }
 > ata2: soft resetting link

pata_ali is one of the drivers that got converted to doing 32-bit PIO.
Please try this <http://marc.info/?l=linux-kernel&m=123254501314058&w=2>
patch. It's known to fix similar problems seen with ata_piix.
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