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Subject[PATCH 4.14 082/267] ASoC: au8540: use 64-bit arithmetic instead of 32-bit
Date
From: Young_X <YangX92@hotmail.com>

[ Upstream commit cd7fdc45bc69a62b4e22c6e875f1f1aea566256d ]

Add suffix ULL to constant 256 in order to give the compiler complete
information about the proper arithmetic to use.

Notice that such constant is used in a context that expects an
expression of type u64 (64 bits, unsigned) and the following
expression is currently being evaluated using 32-bit arithmetic:

256 * fs * 2 * mclk_src_scaling[i].param

Signed-off-by: Young_X <YangX92@hotmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/soc/codecs/nau8540.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/nau8540.c b/sound/soc/codecs/nau8540.c
index f9c9933acffb6..c0c64f90a61b7 100644
--- a/sound/soc/codecs/nau8540.c
+++ b/sound/soc/codecs/nau8540.c
@@ -548,7 +548,7 @@ static int nau8540_calc_fll_param(unsigned int fll_in,
fvco_max = 0;
fvco_sel = ARRAY_SIZE(mclk_src_scaling);
for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
- fvco = 256 * fs * 2 * mclk_src_scaling[i].param;
+ fvco = 256ULL * fs * 2 * mclk_src_scaling[i].param;
if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX &&
fvco_max < fvco) {
fvco_max = fvco;
--
2.20.1


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