>-----Original Message----- >From: linux-ide-owner@xxxxxxxxxxxxxxx [mailto:linux-ide- >owner@xxxxxxxxxxxxxxx] On Behalf Of Tejun Heo >Sent: Wednesday, October 31, 2007 1:07 AM >To: Gaston, Jason D >Cc: Alan Cox; linux-ide@xxxxxxxxxxxxxxx >Subject: Re: ATAPI devices in AHCI mode not working > >Gaston, Jason D wrote: >>> -----Original Message----- >>> From: Alan Cox [mailto:alan@xxxxxxxxxxxxxxxxxxx] >>> Sent: Monday, October 29, 2007 3:14 PM >>> To: Gaston, Jason D >>> Cc: linux-ide@xxxxxxxxxxxxxxx >>> Subject: Re: ATAPI devices in AHCI mode not working >>> >>>> ata1: SATA max UDMA/133 abar m1024@0xd9101000 port 0xd9101100 irq 216 >>>> ata2: SATA max UDMA/133 abar m1024@0xd9101000 port 0xd9101180 irq 216 >>>> ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) >>>> ata1.00: ATAPI: ATAPI DVD D DH16D2S, EP52, max UDMA/100 >>>> ata1.00: configured for UDMA/100 >>> Much better - no misdetected link type, no device claiming to be PATA >>> when its SATA. >>> >>> >>> Right that eliminates all the obvious goings on being caused by broken >>> devices which is a start. Doesn't shed any light on the rest of it. >> What >>> happens if you boot with irqpoll enabled ? (wondering if the timeouts >> are >>> ACPI or IRQ routing stuff) >> >> I rebuilt the kernel; the DVD and USB devices are functional now. I'm >> not sure what the problem was before. On a side note: In 2.6.24.rc1 the >> DVD starts working right away, but on a SLES10_SP1 kernel, it takes some >> time for it to step down to a PIO mode before the DVD can be mounted. >> Oh well. > >Yeah, there has been quite some update in libata between SLES10_SP1 and >2.6.24-rc1. The controller being ahci, I wonder whether this is caused >by the different in check_atapi_dma(). > >1. Does other optical drives have the same problem? If not, please post >the result of "hdparm -I /dev/sr0" with the problematic one attached. > >2. If you apply the attached patch to 2.6.24-rc1, does it behave the >same as the SLES10SP1 kernel? > >-- >Tejun All of the ATAPI drives seem to have the issue of taking a while to slow down and start working. I will try the patch and see what happens. I will also get the hdparm info from all of the drives I am using to see if something stands out. Thanks, Jason - 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
