Zan Lynx 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@xxxxxxx> wrote:
On Fri, 2007-12-07 at 15:02 -0800, Andrew Morton wrote:
On Fri, 07 Dec 2007 20:38:24 +0000
Zan Lynx <zlynx@xxxxxxx> wrote:
While I'm reporting problems I'll get this one out there.
I normally use a USB-2 memory card reader but I also have a PCMCIA
CompactFlash adapter that I use occasionally. During the MM series
kernels 2.6.22 and 23 (I am pretty sure) this didn't work at all. I
don't know about vanilla since I don't run that.
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]
Oh, OK. Hopefully the ata guys can help out with this.
I don't know if it actually strictly a regression? Did libata ever support
that device in any earlier kernels?
That could be why it didn't work for a few kernel versions. I
reconfigured for a libata-only system a while back. And, since I
usually use the USB-2 flash reader I didn't care much about the PCMCIA.
I will try reverting that patch later tonight, in a few hours.
It looks like pata_pcmcia is always PIO mode 0:
/**
* pcmcia_init_one - attach a PCMCIA interface
* @pdev: pcmcia device
*
* Register a PCMCIA IDE interface. Such interfaces are PIO 0 and
* shared IRQ.
*/
I assume that with old IDE this would use ide_cs.c, but I'm drawing a
blank on what modes that supports..
--
Robert Hancock Saskatoon, SK, Canada
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Home Page: http://www.roberthancock.com/
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