staging: comedi: addi_apci_2032: remove "empty acquisition" async command
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Tue, 9 Sep 2014 23:15:33 +0000 (16:15 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 11 Sep 2014 21:35:19 +0000 (14:35 -0700)
commit52c22b803e1b0259adddb0bd2153674ddb2da0d3
tree6a0b5839783f2ca1b37113e9ff9e222c1abff66b
parent8c469410741c017137a81f34c161af82a979846e
staging: comedi: addi_apci_2032: 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 immediatelt 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/addi_apci_2032.c