tree bcda2f5446cb815217888c547d7b4f455ee102c8
parent 157a340d1ff490c346e6ea02eaa21510432ac092
author H Hartley Sweeten <hsweeten@visionengravers.com> 1410304538 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1410471320 -0700

staging: comedi: amplc_pci224: remove "empty acquisition" async command

This driver currently allows a cmd->stop_src == TRIG_COUNT with a cmd->stop_arg
of 0. This causes the (*do_cmd) to immediately generate a COMEDI_CB_EOA event
without acquiring any data.

This "empty acquisition" async command is not really useful. Validate that the
cmd->stop_arg is >= 1 in the (*do_cmdtest) and remove the "empty acquisition"
code.

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>