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Date: Sat, 8 Dec 2007 20:04:15 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: Zan Lynx <zlynx@....org> Cc: linux-kernel@...r.kernel.org, linux-pcmcia@...ts.infradead.org, linux-ide@...r.kernel.org, Alan Cox <alan@...rguk.ukuu.org.uk>, Jeff Garzik <jeff@...zik.org> Subject: Re: 2.6.24-rc4-mm1 and Very Slow PCMCIA Compact Flash On Sat, 08 Dec 2007 20:02:54 -0700 Zan Lynx <zlynx@....org> wrote: > > On Sat, 2007-12-08 at 02:07 -0800, Andrew Morton wrote: > > On Fri, 07 Dec 2007 22:01:33 -0700 Zan Lynx <zlynx@....org> wrote: > > > > > > > > On Fri, 2007-12-07 at 15:22 -0800, Andrew Morton wrote: > > > > On Fri, 07 Dec 2007 23:09:43 +0000 > > > > Zan Lynx <zlynx@....org> wrote: > > > [cut] > > > > > > > Now with MM kernels 2.6.24 rc1-4 the PCMCIA adapter works again, but I > > > > > > > only get read rates of 1.6 MB/s. When it used to work in 2.6.20 I got > > > > > > > at least 16 MB/s. The card itself is capable of 30+ in the USB-2 > > > > > > > reader. > [cut] > > argh. OK. And Linus's current tree is OK, yes? > > > > In which case we should be OK for 2.6.24 and I guess we can hope like heck > > that the dud patch doesn't leak into mainline. Hopefully Alan will get > > some time to look into it before 2.6.25 opens. > > Linus' tree is also broken. > > I tried a Linus 2.6.24-rc4 and it acts the same way, with a very slow > transfer rate. shit > I also tried 2.6.24-rc4 with the older not-libata PATA drivers and it is > broken. squared. > dmesg had a line about the CF card detected as hda, > but /sys/block did not have hda and /dev/hda did not function. But these drivers did work in earlier kernels, yes? 2.6.20 worked, but we don't know about intervening kernels. Can you tell us which version(s)? > I will try the patches you mentioned Yes, that won't tell use anything. > but I think I may also have to > work backward through kernel versions until I find the last one where > the PCMCIA hd{a,b,c,d,e} drivers worked. That would be great - a git-bisect is often ideal. http://www.kernel.org/doc/local/git-quick.html has details. -- 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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