From: Rajeshwar R Shinde <coolrrsh@xxxxxxxxx> In the function do_div, the dividend is evaluated multiple times so it can cause side effects. Therefore replace it with div64_s64. This fixes warning such as: drivers/dma/dmatest.c:496:1-7: WARNING: do_div() does a 64-by-32 division, please consider using div64_s64 instead. Signed-off-by: Rajeshwar R Shinde <coolrrsh@xxxxxxxxx> --- drivers/dma/dmatest.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index ffe621695e47..07042f239db8 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -9,6 +9,7 @@ #include <linux/err.h> #include <linux/delay.h> +#include <linux/math64.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/freezer.h> @@ -493,7 +494,7 @@ static unsigned long long dmatest_persec(s64 runtime, unsigned int val) per_sec *= val; per_sec = INT_TO_FIXPT(per_sec); - do_div(per_sec, runtime); + per_sec=div64_s64(per_sec, runtime); return per_sec; } -- 2.25.1
