On 18/05/2020 18.07, Pierre Morel wrote:
> use get_clock_ms() to calculate a delay in ms
>
> Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
> ---
> lib/s390x/asm/time.h | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/lib/s390x/asm/time.h b/lib/s390x/asm/time.h
> index 25c7a3c..931a119 100644
> --- a/lib/s390x/asm/time.h
> +++ b/lib/s390x/asm/time.h
> @@ -23,4 +23,14 @@ static inline uint64_t get_clock_ms(void)
> return (clk >> (63 - 51)) / 1000;
> }
>
> +static inline void mdelay(unsigned long ms)
> +{
> + unsigned long startclk;
> +
> + startclk = get_clock_ms();
> + for (;;)
> + if (get_clock_ms() - startclk > ms)
> + break;
Maybe rather:
for (;get_clock_ms() - startclk <= ms;)
;
?
Or:
while (get_clock_ms() - startclk <= ms)
;
?
Thomas
