Damien George bd6ca15444 py/modio: Allow uio.IOBase streams to return errno for read/write error. ...

This allows user code that inherits from uio.IOBase to return an errno
error code from the user readinto/write function, by returning a negative
value.  Eg returning -123 means an errno of 123.  This is already how the
custom ioctl works.

2020-04-27 23:58:46 +10:00

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