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hw/rtc/m48t59: Use 64-bit arithmetic in set_alarm()

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In the m48t59 device we almost always use 64-bit arithmetic when
dealing with time_t deltas.  The one exception is in set_alarm(),
which currently uses a plain 'int' to hold the difference between two
time_t values.  Switch to int64_t instead to avoid any possible
overflow issues.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Peter Maydell 2023-08-31 09:45:17 +01:00
parent 35aa6715dd
commit 7038b6e4e7
1 changed files with 1 additions and 1 deletions
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hw/rtc/m48t59.c
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@ -133,7 +133,7 @@ static void alarm_cb (void *opaque)
static void set_alarm(M48t59State *NVRAM)
{
int diff;
int64_t diff;
if (NVRAM->alrm_timer != NULL) {
timer_del(NVRAM->alrm_timer);
diff = qemu_timedate_diff(&NVRAM->alarm) - NVRAM->time_offset;