Hi I get the followin gerros once in a while on 2.6.18, running on a Freescale 8260 PPC. The controller is Silicon Image SiI3124 , and the drive a seagate NL35.2 drive Any idea if this is hardware or software? ata2: illegal qc_active transition (00000002->000001f8) ata2.00: exception Emask 0x2 SAct 0x2 SErr 0x0 action 0x2 frozen ata2.00: tag 1 cmd 0x61 Emask 0x2 stat 0x50 err 0x0 (HSM violation) ata2: soft resetting port ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata2.00: qc timeout (cmd 0xec) ata2.00: failed to IDENTIFY (I/O error, err_mask=0x104) ata2.00: revalidation failed (errno=-5) ata2: failed to recover some devices, retrying in 5 secs ata2: hard resetting port ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata2.00: configured for UDMA/100 ata2: EH complete SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB) sda: Write Protect is off SCSI device sda: drive cache: write back kernel startup msg: Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx ata1: SATA max UDMA/100 cmd 0xE1060000 ctl 0x0 bmdma 0x0 irq 69 ata2: SATA max UDMA/100 cmd 0xE1062000 ctl 0x0 bmdma 0x0 irq 69 ata3: SATA max UDMA/100 cmd 0xE1064000 ctl 0x0 bmdma 0x0 irq 69 ata4: SATA max UDMA/100 cmd 0xE1066000 ctl 0x0 bmdma 0x0 irq 69 scsi0 : sata_sil24 ata1: SATA link down (SStatus 0 SControl 300) scsi1 : sata_sil24 ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata2.00: ATA-7, max UDMA/133, 488397168 sectors: LBA48 NCQ (depth 31/32) ata2.00: configured for UDMA/100 scsi2 : sata_sil24 ata3: SATA link down (SStatus 0 SControl 300) scsi3 : sata_sil24 ata4: SATA link down (SStatus 0 SControl 300) Vendor: ATA Model: ST3250624NS Rev: 3.AE Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB) sda: Write Protect is off SCSI device sda: drive cache: write back SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB) sda: Write Protect is off SCSI device sda: drive cache: write back sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 > sd 1:0:0:0: Attached scsi disk sda sd 1:0:0:0: Attached scsi generic sg0 type 0 >lspci -v -s 0:11 00:11.0 Unknown mass storage controller: CMD Technology Inc: Unknown device 3124 (rev 01) Subsystem: CMD Technology Inc: Unknown device 3124 Flags: bus master, stepping, 66Mhz, medium devsel, latency 128, IRQ 69 Memory at 97ffff80 (64-bit, non-prefetchable) [size=128] Memory at 97ff0000 (64-bit, non-prefetchable) [size=32K] I/O ports at 9800fff0 [size=16] Expansion ROM at <unassigned> [disabled] [size=512K] Capabilities: [64] Power Management version 2 Capabilities: [40] PCI-X non-bridge device. Capabilities: [54] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- - 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