staging: comedi: amplc_pci230: remove analog output "empty acquisition" async command
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Tue, 9 Sep 2014 23:15:41 +0000 (16:15 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 11 Sep 2014 21:35:20 +0000 (14:35 -0700)
commit54d2925bd6b49b5330e8ebbdc83416b0b1605fa2
treed9b4dd667a7428aec7b60a8f59e35da82d0a194a
parentaaf6598f086396e51caafceee89f7ceecd7defd0
staging: comedi: amplc_pci230: remove analog output "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>
drivers/staging/comedi/drivers/amplc_pci230.c