Jeff Garzik wrote: > Tejun Heo wrote: >> Arjan van de Ven wrote: >>> I'd be interested in finding out how to best test this; if the bios is >>> really broken I'd love to add a test to the Linux-ready Firmware >>> Developer Kit for this, so that BIOS developers can make sure future >>> bioses do not suffer from this bug... >> >> As reported, this is almost a butterfly effect. ->softreset method is >> only used during initialization and error recovery of ATA devices which >> has almost nothing to do with the rest of the system. This is almost >> like 'changing my mixer input to line-in makes power off fail'. (it's >> more related due to ATA ACPI stuff and maybe that's why this happens but >> I'm trying to make a point here.) > > It's quite possible that the BIOS in question wants AHCI in some > specific state at poweroff.
I would be surprised if this weren't an accident. We reset the controller during initialization, so whether softreset or hardreset is used, the end status cannot be much different. And, I really don't wanna change ahci and/or libata for this. -- tejun - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
