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

[Anish Mistry]

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.
Does this help?
cat /dev/null > /dev/da0

-- 
Anish Mistry
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