Tejun Heo wrote: > Jonathan Blake Benson wrote: > >> I posted a couple of months ago regarding enabling libata.atapi on a >> Digital Alpha 164LX, equipped with a Silicon Image 3114 controller. I >> decied to give kernel 2.6.16 (release, was previously using rc-1) a >> shot, and it no longer longer panics. I still have a Lite-ON DVD ROM >> drive connected via a sil3611 bridge to port number 4, hoping that I >> can avoid using the onboard CMD646. >> >> No panic this time, though it appears to throw a machine check. The >> system continues all the way to multi-user, and the Maxtor drives are >> usable. Hope the attached dmesg helps. Let me know if I can be of >> any assitance. >> > > Can you build your kernel with ATA_DEBUG set and post dmesg? Just > change #undef ATA_DEBUG to #define ATA_DEBUG at the top of > include/linux/libata.h > For the SiI 3611 bridge + ATAPI devices, maybe the ATAPI_ENABLE_DMADIR workaround should also be turned on as well. (in linux/libata.h) My JMicron 20330 bridge + SiI 3112 can handle ATAPI DMA without the ATAPI_ENABLE_DMADIR workaround. However, the SiI 3611 bridge seems need it. -- Albert - : 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