The ai subdevice (*do_cmd) pointer is only initialized if the
driver has successfully requested the interrupt. The extra test
in labpc_ai_cmd() is not necessary.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
enum scan_mode mode;
unsigned long flags;
- if (!dev->irq) {
- comedi_error(dev, "no irq assigned, cannot perform command");
- return -1;
- }
-
range = CR_RANGE(cmd->chanlist[0]);
aref = CR_AREF(cmd->chanlist[0]);