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staging: comedi: ni_tio: convert NI_660x_Source_Pin_Clock() to a macro

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The BUG_ON() in this function can never happen.

For aesthetics, rename this CamelCase inline function and convert it into
a simple macro.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2014-07-24 10:14:39 -07:00 • committed by Greg Kroah-Hartman
parent 03c7867123
commit cdf4fce421
1 changed files with 3 additions and 7 deletions
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10
drivers/staging/comedi/drivers/ni_tio.c
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@ -127,11 +127,7 @@ static inline unsigned NI_660x_RTSI_Clock(unsigned n)
}
static const unsigned ni_660x_max_source_pin = 7;
static inline unsigned NI_660x_Source_Pin_Clock(unsigned n)
{
BUG_ON(n > ni_660x_max_source_pin);
return 0x2 + n;
}
#define NI_660X_SRC_PIN_CLK(x) (0x2 + (x))
/* clock sources for ni e and m series boards, get bits with Gi_Source_Select_Bits() */
enum ni_m_series_clock_source {
@ -540,7 +536,7 @@ static unsigned ni_660x_source_select_bits(unsigned int clock_source)
for (i = 0; i <= ni_660x_max_source_pin; ++i) {
if (clock_select_bits ==
NI_GPCT_SOURCE_PIN_CLOCK_SRC_BITS(i)) {
ni_660x_clock = NI_660x_Source_Pin_Clock(i);
ni_660x_clock = NI_660X_SRC_PIN_CLK(i);
break;
}
}
@ -822,7 +818,7 @@ static unsigned ni_660x_clock_src_select(const struct ni_gpct *counter)
if (i <= ni_660x_max_rtsi_channel)
break;
for (i = 0; i <= ni_660x_max_source_pin; ++i) {
if (input_select == NI_660x_Source_Pin_Clock(i)) {
if (input_select == NI_660X_SRC_PIN_CLK(i)) {
clock_source =
NI_GPCT_SOURCE_PIN_CLOCK_SRC_BITS(i);
break;