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Staging: ced1401: fix copy_from/to_user warning messages
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 18 Sep 2012 04:25:28 +0000 (21:25 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 18 Sep 2012 04:25:28 +0000 (21:25 -0700)
Properly check the return value of copy_from/to_user() and handle any
errors that might happen.

This removes a bunch of compiler warnings.

Cc: Alois Schlögl <alois.schloegl@ist.ac.at>
Cc: Greg P. Smith <greg@ced.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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