[PATCH v5 2/2] iio: frequency: ad9832: simplify bitwise math

[Joshua Crofts]

Refactor the ad9832_calc_freqreg by adding a BIT_ULL()
macro instead of manual bit shifting for better
readability.

Signed-off-by: Joshua Crofts <joshua.crofts1@xxxxxxxxx>
Reviewed-by: Nuno Sá <nuno.sa@xxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
---
 drivers/staging/iio/frequency/ad9832.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c
index fbcfdbd398..cd7c7727f7 100644
--- a/drivers/staging/iio/frequency/ad9832.c
+++ b/drivers/staging/iio/frequency/ad9832.c
@@ -111,8 +111,8 @@ struct ad9832_state {
 
 static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout)
 {
-	unsigned long long freqreg = (u64)fout *
-				     (u64)((u64)1L << AD9832_FREQ_BITS);
+	u64 freqreg = (u64)fout * BIT_ULL(AD9832_FREQ_BITS);
+
 	do_div(freqreg, mclk);
 	return freqreg;
 }
-- 
2.47.3