staging: comedi: usbduxsigma: return failure of auto attach
authorBernd Porr <mail@berndporr.me.uk>
Tue, 7 Jan 2014 21:43:10 +0000 (21:43 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 9 Jan 2014 18:51:54 +0000 (10:51 -0800)
commit7a45ae6edf808821a9799eccd9043177463aa05f
tree905e4ad259cbf1cf534c88ecdeba388d1e238053
parentbcb6232d090c82e41d6bce9474e031bfd948fcdb
staging: comedi: usbduxsigma: return failure of auto attach

The function usbduxsigma_getstatusinfo() returns a negative
value in case there has been a communication error with
the board. This should always work and if this communication
fails then there is something seriously wrong with the board.
This is now returned to the caller so that it can
terminte the auto attachement. The return command also prevents
printing out the offset value in case of a fault.

Signed-off-by: Bernd Porr <mail@berndporr.me.uk>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/usbduxsigma.c