From: Ian Abbott Date: Fri, 5 Jun 2015 17:30:15 +0000 (+0100) Subject: staging: comedi: das08: rename and rewrite DAS08_IP X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4d14ac8a900961b44173a5dff38e138ecda8e4c7;p=linux-beck.git staging: comedi: das08: rename and rewrite DAS08_IP The `DAS08_IP()` macro takes a value read from the status register and returns the state of the three digital input channels (except on "JR" boards). Rename it to `DAS08_STATUS_DI()` and add a comment. Also re-arrange the expression used to extract the state of the digital inputs for consistency with other register macros. Signed-off-by: Ian Abbott Reviewed-by: H Hartley Sweeten Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/das08.c b/drivers/staging/comedi/drivers/das08.c index 935bbfb213e6..eef0456fdc70 100644 --- a/drivers/staging/comedi/drivers/das08.c +++ b/drivers/staging/comedi/drivers/das08.c @@ -65,7 +65,8 @@ * setting the INTE control bit to 0. Not present on "JR" boards. */ #define DAS08_STATUS_IRQ BIT(3) /* latched interrupt input */ -#define DAS08_IP(x) (((x)>>4)&0x7) +/* digital inputs (not "JR" boards) */ +#define DAS08_STATUS_DI(x) (((x) & 0x70) >> 4) #define DAS08_CONTROL 2 #define DAS08_MUX_MASK 0x7 #define DAS08_MUX(x) ((x) & DAS08_MUX_MASK) @@ -287,7 +288,7 @@ 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_REG)); + data[1] = DAS08_STATUS_DI(inb(dev->iobase + DAS08_STATUS_REG)); return insn->n; }