staging: comedi: pcl818: tidy up the analog input (*insn_read)
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Tue, 4 Mar 2014 18:30:00 +0000 (11:30 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 7 Mar 2014 01:06:15 +0000 (17:06 -0800)
commit8916f5bcdf2fe4da0f7a83bc3533b307628ff3b7
tree6814bf20b59d4dcde255133d9c220ce2bf24af92
parent9350557325b242cd2b5cd39f169c9cbaad0d2f3c
staging: comedi: pcl818: tidy up the analog input (*insn_read)

For aesthetics, move this function out of the async command support
code.

For safety, the INT request (end-of-conversion flag) should be cleared
before doing each conversion and after the final data sample is read.
This driver already clears the flag before starting a conversion but it
does not clear the flag after the final sample.

Refactor the function a bit so that the flag is cleared for a conversion
timeout and after the last sample.

Do a bit of other tidying up during the move.

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/pcl818.c