[PATCH] drivers:iio:dac make expression evaluation 64-bit

[Muhammad Usama Anjum]

Two 32-bit values are being evaluated using 32-bit arithmetic and then
passed to s64 type. It is wrong. Expression should be evaluated using
64-bit arithmetic and then passed.

Fixes: 8f2b54824b ("drivers:iio:dac: Add AD3552R driver support")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
---
 drivers/iio/dac/ad3552r.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c
index 97f13c0b9631..b03d3c7cd4c4 100644
--- a/drivers/iio/dac/ad3552r.c
+++ b/drivers/iio/dac/ad3552r.c
@@ -770,7 +770,7 @@ static void ad3552r_calc_gain_and_offset(struct ad3552r_desc *dac, s32 ch)
 	dac->ch_data[ch].scale_dec = DIV_ROUND_CLOSEST((s64)rem * 1000000,
 							65536);
 
-	dac->ch_data[ch].offset_int = div_s64_rem(v_min * 65536, span, &rem);
+	dac->ch_data[ch].offset_int = div_s64_rem(v_min * 65536L, span, &rem);
 	tmp = (s64)rem * 1000000;
 	dac->ch_data[ch].offset_dec = div_s64(tmp, span);
 }
-- 
2.30.2