Re: [PATCH 2.6.30 1/1] usb-storage: handle unusual dev Realtek Usb Card Reader (0x0bda:0x0152)

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On Thu, 2 Jul 2009, Giacomo Lozito wrote:

> >You don't actually need the new flag.  Although it might be considered
> >abuse, you can set the SINGLE_LUN flag for this device and then
> >override the value in your initialization function.
> 
> Yes, I had thought about that. And it certainly works as long as SINGLE_LUN is 
> checked (and max_lun is set to 0) -before- usb_stor_acquire_resources is 
> called.
> But then I thought it might be better to have a flag that is made to obtain 
> that specific behaviour rather than to set the SINGLE_LUN flag with the above 
> speculation just cause it currently works.
> My two cents, of course :)

Yeah, abusing SINGLE_LUN this way probably isn't a good idea.

> >Does this device work correctly under Windows?  If so, how?
> 
> It works correctly on Windows Vista.
> The device is seen as a single usb component but it displays four separate 
> disks on "my computer", even when no card is inserted in (just like a CD 
> reader).

The point of my question is: How does Windows know there are four LUNs?

Alan Stern

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