On Tue, 18 Jul 2006 22:07:44 +0400, Sergei Shtylyov wrote: >> In contrast, the old IDE pdc202xx_new driver had lots >> of problems with CRC errors causing it to disable DMA. > > Hm, from my experience it usually falls back to UltraDMA/44 and then the >thing startrt working... > >> I wasn't able to manually tune it above udma3 without >> getting more errors. This isn't sparc64-specific: I've >> had similar negative experience with the old IDE Promise >> drivers in a PowerMac. > > This happens because the "old" driver misses the PLL calibration code. > You may want to try these Albert's patches: > >http://marc.theaimsgroup.com/?t=110992452800002&r=1&w=2 >http://marc.theaimsgroup.com/?t=110992471500002&r=1&w=2 >http://marc.theaimsgroup.com/?t=110992490100002&r=1&w=2 >http://marc.theaimsgroup.com/?t=111019238400003&r=1&w=2 > > It looks like they were never considered for accepting into the kernel >while they succesfully solve this issue. Maybe Albert could try pushing them >into -mm tree once more? Thank you for these links. After fixing up whitespace damage in these four messages the patches applied OK and more importantly eliminated _all_ misbehaviour from pdc202xx_new on both my sparc64 and my PowerMac. These fixes belong in Linus' kernel, not some semi-obscure mailing list archive. /Mikael - : 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
