Zitat von Alan <alan@xxxxxxxxxxxxxxxxxxx>: > On Thu, 01 Feb 2007 19:22:31 +0100 > juergen.metzdorf@xxxxxxxxxxxxxx wrote: > >> Hello, >> >> I'm experiencing problems with an SATA-DVD-Writer (Samsung SH-S183a) >> connected >> to a VIA8237 motherboard chipset. As you can see in the attached >> boot.log, the >> system is reducing the DMA-Mode from DMA33 to DMA25 then to DMA16 to >> end up as >> PIO4. As a result the dvds that are written are corrupt. During the writing >> process the messages log shows repeating entries like this: > > Please try the patch I posted to the kernel list and ide list yesterday > which allows settle time on DMA changes. > Hi, I've applied your patch and the patch by Jeff Garzik that he posted today. Unfortunately that hasn't change the problem. Still the drive ends up at PIO4: <3>ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen <3>ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x43 data 12 in <4> res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout) <6>ata2: soft resetting port <4>ATA: abnormal status 0x7F on port 0xB007 <4>ATA: abnormal status 0x7F on port 0xB007 <6>ata2.00: configured for UDMA/33 <6>ata2: EH complete <4>ata2.00: limiting speed to UDMA/25 <3>ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen <3>ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x43 data 12 in <4> res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout) <6>ata2: soft resetting port <4>ATA: abnormal status 0x7F on port 0xB007 <4>ATA: abnormal status 0x7F on port 0xB007 <6>ata2.00: configured for UDMA/25 <6>ata2: EH complete <3>sr0: CDROM (ioctl) error, command: <6>Read TOC/PMA/ATIP 43 00 00 00 00 00 00 00 0c 40 <6>sr: Current [descriptor]: sense key: Aborted Command <6> Additional sense: No additional sense information <4>ata2.00: limiting speed to UDMA/16 <3>ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen <3>ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x43 data 12 in <4> res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout) <6>ata2: soft resetting port <4>ATA: abnormal status 0x7F on port 0xB007 <4>ATA: abnormal status 0x7F on port 0xB007 <6>ata2.00: configured for UDMA/16 <6>ata2: EH complete <4>ata2.00: limiting speed to PIO4 <3>ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen <3>ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x43 data 12 in <4> res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout) <6>ata2: soft resetting port <4>ATA: abnormal status 0x7F on port 0xB007 <4>ATA: abnormal status 0x7F on port 0xB007 <6>ata2.00: configured for PIO4 <6>ata2: EH complete BTW: In function ata_dev_set_mode in libata_core.c the variable err_mask is not initialized (line 2386). I changed that and initialized err_mask with 0, but that did'nt solve my problem. I did'nt expect to :-) Juergen Metzdorf - 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
