On Wed, Dec 28, 2016 at 12:36:02AM +0900, Masahiro Yamada wrote: > It is not safe to compare timer values directly. > > On 32-bit systems, for example, timer_get_us() wraps around every > 72 min. (2 ^ 32 / 1000000 =~ 4295 sec =~ 72 min). Depending on > the get_ticks() implementation, it may wrap more frequently. > The 72 min might be possible on the use of U-Boot. > > Let's borrow time_after, time_before, and friends to solve the > wrap-around problem. > > These macros were copied from include/linux/jiffies.h of Linux 4.9. > > Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com> > Reviewed-by: Simon Glass <s...@chromium.org>
Applied to u-boot/master, thanks! -- Tom
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