Hi,

On Thu, Jan 09, 2003 at 12:05:46AM +0100, Henning Meier-Geinitz wrote:
> This is another try to fix the crashes that occur when a USB scanner
> is disconnected while open and write/read/ioctl is called after the
> disconnect. This time I've kept all the cleanup bur kfree(scn) in
> disconnect_scanner() and only the kfree(scn) is done in close_scanner,
> if the device was disconnected in the meantime.

Is this approach ok? I'm willing to use alternative ways, but I don't
know any :-)

> [PATCH 2.5.54] scanner.c: Avoid crashes when using read/write/ioctl on disconnected 
>device
> 
> Avoid crashing when read/write/ioctl is called after disconnecting the
> device. Keep scn until the device is closed and check scn->present in
> read/write/ioctl. 

Bye,
  Henning


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