staging: comedi: amplc_pci230: Replace NULLFUNC

The source code defines a macro NULLFUNC

  #define NULLFUNC 0

and uses it as a generic null function pointer constant.  This is
superfluous.  Just use NULL instead.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2012-06-08 10:40:05 +01:00 committed by Greg Kroah-Hartman
parent f59f231e3d
commit 83afda9d44

View File

@ -430,9 +430,6 @@ enum {
/* Combine old and new bits. */
#define COMBINE(old, new, mask) (((old) & ~(mask)) | ((new) & (mask)))
/* A generic null function pointer value. */
#define NULLFUNC 0
/* Current CPU. XXX should this be hard_smp_processor_id()? */
#define THISCPU smp_processor_id()
@ -1491,7 +1488,7 @@ static int pci230_ao_inttrig_start(struct comedi_device *dev,
if (trig_num != 0)
return -EINVAL;
s->async->inttrig = NULLFUNC;
s->async->inttrig = NULL;
pci230_ao_start(dev, s);
return 1;
@ -2292,7 +2289,7 @@ static int pci230_ai_inttrig_start(struct comedi_device *dev,
if (trig_num != 0)
return -EINVAL;
s->async->inttrig = NULLFUNC;
s->async->inttrig = NULL;
pci230_ai_start(dev, s);
return 1;