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staging: comedi: adv_pci1710: cmd->scan_begin_src can only be TRIG_FOLLOW 

In Step 1 of the (*do_cmdtest), the cmd->scan_begin_src is checked to
only allow TRIG_FOLLOW. The (*do_cmd) does not need to recheck this.

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>
This commit is contained in:
H Hartley Sweeten 2014-04-23 16:06:58 -07:00 committed by Greg Kroah-Hartman
parent 4b1fea003c
commit c56cad003d
1 changed files with 7 additions and 9 deletions
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16
drivers/staging/comedi/drivers/adv_pci1710.c
View File

@ -1115,15 +1115,13 @@ static int pci171x_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
{
struct comedi_cmd *cmd = &s->async->cmd;
if (cmd->scan_begin_src == TRIG_FOLLOW) { /* mode 1, 2, 3 */
if (cmd->convert_src == TRIG_TIMER) { /* mode 1 and 2 */
return pci171x_ai_docmd_and_mode(cmd->start_src ==
TRIG_EXT ? 2 : 1, dev,
s);
}
if (cmd->convert_src == TRIG_EXT) { /* mode 3 */
return pci171x_ai_docmd_and_mode(3, dev, s);
}
if (cmd->convert_src == TRIG_TIMER) { /* mode 1 and 2 */
return pci171x_ai_docmd_and_mode(cmd->start_src ==
TRIG_EXT ? 2 : 1, dev,
s);
}
if (cmd->convert_src == TRIG_EXT) { /* mode 3 */
return pci171x_ai_docmd_and_mode(3, dev, s);
}
return -1;