Reattach/redetect allways connected umass device - is it possible ?

[John Baldwin]

On Monday 14 March 2005 06:45 am, Vladimir Grebenschikov wrote:
> Hi
>
> I have SONY notebook with integrated memory stick card reader. It
> appears as USB umass device and works well.
>
> Usbdevs output is here:
> Controller /dev/usb3:
> addr 1: high speed, self powered, config 1, EHCI root hub(0x0000),
> Intel(0x0000), rev 1.00, device uhub4 port 1 powered
>  port 2 powered
>  port 3 powered
>  port 4 powered
>  port 5 addr 2: high speed, self powered, config 1, USB Memory Stick
> Slot(0x014d), Sony(0x054c), rev 1.10, device umass1 port 6 powered
>
> Only problem is that card-reader itself toes not detach USB device on flash
> removal. So if I change card to another card of different size it is not
> detected and da0 device still has old geometry.
>
> 'camcontrol rescan' does not helps.
>
> For previous Sony notebook stick reader was attached to ATA bus and I
> workaround this problem with atacontrol detach/attach.
>
> How to do same with USB-attached umass device, I mean how to rescan this
> device for physical geometry.
>
> I found only solution - kldunload umass && kldload umass, but it is ugly.
> And can be problem in case when another umass device connected.

Have you tried doing a 'camcontrol eject da0', swapping out the sticks and 
then seeing if da0 comes back with new geometry?  Possibly doing a 
'camcontrol rescan' to force it to see the new stick?

-- 
John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org