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staging: comedi: das08: rename DAS08_STATUS 

The `DAS08_STATUS` macro contains the offset to the read-only status
register.  Rename it to `DAS08_STATUS_REG` and add a comment.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2015-06-05 18:30:12 +01:00 committed by Greg Kroah-Hartman
parent c2ba9e9637
commit b00b3f769a
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/comedi/drivers/das08.c
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@ -57,7 +57,7 @@
#define DAS08_AI_LSB_REG 0x00 /* (R) AI least significant bits */
#define DAS08_AI_MSB_REG 0x01 /* (R) AI most significant bits */
#define DAS08_AI_TRIG_REG 0x01 /* (W) AI software trigger */
#define DAS08_STATUS 2
#define DAS08_STATUS_REG 0x02 /* (R) status */
#define DAS08_EOC (1<<7)
#define DAS08_IRQ (1<<3)
#define DAS08_IP(x) (((x)>>4)&0x7)
@ -205,7 +205,7 @@ static int das08_ai_eoc(struct comedi_device *dev,
{
unsigned int status;
status = inb(dev->iobase + DAS08_STATUS);
status = inb(dev->iobase + DAS08_STATUS_REG);
if ((status & DAS08_EOC) == 0)
return 0;
return -EBUSY;
@ -282,7 +282,7 @@ static int das08_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
{
data[0] = 0;
data[1] = DAS08_IP(inb(dev->iobase + DAS08_STATUS));
data[1] = DAS08_IP(inb(dev->iobase + DAS08_STATUS_REG));
return insn->n;
}