Re: USB CD/disk not working after 2.6.7

[Sami Farin]

On Wed, Nov 03, 2004 at 03:23:42PM -0500, Bill Davidsen wrote:
> Sami Farin wrote:
> >On Wed, Nov 03, 2004 at 12:20:58PM -0500, Bill Davidsen wrote:
> >
> >>Since 2.6.7 no kernel has seen my USB CD burner or disk. I took the disk 
> >>off to simplify the picture, it still doesn't work.
> >
> >...
> >
> >>Buffer I/O error on device uba, logical block 0
> >>unable to read partition table
> >
> >
> >remove this line from .config and rebuild kernel...
> >CONFIG_BLK_DEV_UB=y
> >
> >...and it will just work.
> >
> Thank you for the prompt answer! I've started rebuilding the kernel.

Good luck.

> Do you know if  the incompatibility between flash key support and 
> CD/disk a bug, design decision, or unavoidable characteristic of the 
> devices involved? I have some kind of a flash key coming for evaluation, 
> so I built with that on.

AFAIK, usb-storage works fine with all those USB memory sticks / pen drives
without CONFIG_BLK_DEV_UB and I have absolutely no idea whatsoever what
"flash keys" UB is supposed to support.
I would have assumed that UB enables you to use some flash
key (such as?) which isn't supported by any other USB driver but seems UB
stomps on usb-storage and breaks in many cases and you can't use the usual
USB CF-readers etc with CONFIG_BLK_DEV_UB=y because UB is buggy.
well, defconfig has CONFIG_BLK_DEV_UB disabled.

maybe Pete Zaitcev can enlighten us.

http://en.wikipedia.org/wiki/Keydrive
"flash key" missing from that list? *shrug*

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