staging: comedi: das16: fail attach if board id is incorrect
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Mon, 29 Jul 2013 21:05:00 +0000 (14:05 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 1 Aug 2013 00:38:01 +0000 (17:38 -0700)
commitb08c4015e6042113625d92f9e3e32bdaa652bf76
treeb29fcb8a4ffec9cac7f3a7ad62f4ebc295266541
parent0f13a8d02741f3fd301c5c0184e2c2d734f31a85
staging: comedi: das16: fail attach if board id is incorrect

This driver probes the board id during the attach to ensure that the
user is attempting to attach to the correct board type. Currently an
error message is output if the ids are not consistent but the attach
continues anyway.

Make the attach fail if the id bits do not match. Also, cleanup the
printk messages and use a dev_err() only if the probe fails.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/das16.c