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H Hartley Sweeten authored
The COMEDI_CMD and COMEDI_CMDTEST ioctl functions both copy the chanlist passed by the user from __user memory space to kernel memory space. They then do some sanity checking of the chanlist with comedi_check_chanlist() before the subdevice (*do_cmdtest) and (*do_cmd) operations are called. Introduce a helper function to handle the memdup_user() and the sanity checking. Also, remove the unnecessary dev_dbg() when the memdup_user() or comedi_check_chanlist() fail. Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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