Recent change to hid-core.c

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Jiri,

The recent update 08ec2dcc3527a20c619aca2fb36f800908256bac
 "Merge branches 'for-3.11/multitouch', 'for-3.11/sony' and 'for-3.11/upstream' into for-linus"
included an unexpected change to the return code handing for ->raw_event() calls.

A HID driver's raw_event() method previously could return these values:
   0 --> keep processing.
   1 --> no further processing required.
   <0 --> error.

Now, "1" and "0" are both treated as "keep processing",
so a lower level HID driver has to return a negative error code
to achieve the "no further processing required" state.

Was this intentional?  Doesn't that have side-effects for some drivers?

Thanks
-- 
Mark Lord
Real-Time Remedies Inc.
mlord@xxxxxxxxx
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