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-rw-r--r--drivers/staging/comedi/drivers/amplc_pci230.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/staging/comedi/drivers/amplc_pci230.c b/drivers/staging/comedi/drivers/amplc_pci230.c
index 9c360307f699..48c7890c3007 100644
--- a/drivers/staging/comedi/drivers/amplc_pci230.c
+++ b/drivers/staging/comedi/drivers/amplc_pci230.c
@@ -376,8 +376,11 @@
#define CLK_1KHZ 5 /* internal 1 kHz clock */
#define CLK_OUTNM1 6 /* output of channel-1 modulo total */
#define CLK_EXT 7 /* external clock */
-/* Macro to construct clock input configuration register value. */
-#define CLK_CONFIG(chan, src) ((((chan) & 3) << 3) | ((src) & 7))
+
+static unsigned int pci230_clk_config(unsigned int chan, unsigned int src)
+{
+ return ((chan & 3) << 3) | (src & 7);
+}
/*
* Counter/timer gate input configuration sources.
@@ -697,7 +700,7 @@ static void pci230_ct_setup_ns_mode(struct comedi_device *dev, unsigned int ct,
/* Determine clock source and count. */
clk_src = pci230_choose_clk_count(ns, &count, flags);
/* Program clock source. */
- outb(CLK_CONFIG(ct, clk_src), dev->iobase + PCI230_ZCLK_SCE);
+ outb(pci230_clk_config(ct, clk_src), dev->iobase + PCI230_ZCLK_SCE);
/* Set initial count. */
if (count >= 65536)
count = 0;