Re: [BUG?] ata disk running maximum at DMA33 with 2.6.20 and newpata driver, NV CK804 ide controller.

From: Alan
Date: Fri Feb 09 2007 - 15:03:22 EST


> As an aside to this sort of problem, shouldn't we print some kind of
> loud message in dmesg when we force a high-UDMA-capable device down to
> UDMA33 due to a 40-wire cable detection? In the case where it truly is a
> 40-wire cable the user may want to know that and replace the cable, if
> it isn't it gives more of a hint of why the drive isn't running at full
> speed..

Send patches. We also probably want to change speed straight from
UDMAlots to UDMA33 if the cable is CBL_UNK so that we can rapidly recover
in the cases where the controller says "I'm crap I don't really know" (eg
ATI and Nvidia without ACPI)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/