staging: comedi: amplc_dio200_common: remove 'spinlock' from struct dio200_subdev_8254
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Mon, 23 Feb 2015 21:58:00 +0000 (14:58 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 2 Mar 2015 02:51:52 +0000 (18:51 -0800)
commit99ca4e4613da5cb589de6b4127de75e520b32b43
tree16ec307115db09bdc9f21f41b05e1de618411bcb
parented023d529ce44c0e3c41101a344d80259bd96443
staging: comedi: amplc_dio200_common: remove 'spinlock' from struct dio200_subdev_8254

Currently this driver uses a spinlock in the 8254 subdevice (*insn_read), (*insn_write),
and (*insn_config) functions. The comedi core checks if the subdevice is 'busy', in
parse_insn(), before any of the subdevice functions are attempted.

Remove the unnecessary spinlock.

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/amplc_dio200_common.c