[mpf70-devel] USB timeout / disconnect handling

[Jeremy <jer...@m4...>]

I've commited some code that should handle USB timeout errors, but
unfortunately I have yet to reproduce a timeout situation, so I can't
be positive!

One thing is for sure, disconnect situations are handled a lot more
gracefully. In the old code a null pointer exception could occur as
the "usbdev" pointer of the mpf70_t structure gets set to NULL on
disconnect.

Also, the module use count is now increased/decreased upon
mount/unmount, not upon probing the device.

Jeremy

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