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Date: Fri, 5 Jun 2009 14:43:51 +0200 From: Grozdan <neutrino8@...il.com> To: Alan Cox <alan@...rguk.ukuu.org.uk> Cc: hancockrwd@...il.com, linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org Subject: Re: Kernel 2.6.30rc7 limits IDE to UDMA33 2009/6/5 Alan Cox <alan@...rguk.ukuu.org.uk>: >> I've relayed your reply to the pata_amd user on the forum. As for my >> case with pata_via, until this is fixed, is there any way to force it >> to use a higher UDMA? Is there a flag that can be passed in, for > > In your case given the BIOS appears to be informing us you have a 40wire > cable there isn't much that can be fixed > >> example, in /sys somewhere? hdparm fails to set a higher UDMA and I >> looked at sdparm but don't see anything in it to increase UDMA... > > Tejun some time ago added stuff to override all of these things: > > See Documentation/kernel-parameters.txt > > libata.force= > > which will let you override all sorts of autodetection for quirky boards > Thanks, I will try out the kernel params. However, I still wonder why older kernels have no problems setting the correct UDMA while 2.6.30 does have problems. Something must have definitely changed in this latest kernel. I'll go dig in my BIOS to see if I may need to change/force something. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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