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check UART valid or not when setup console timer

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if no valid UART in hypervisor, not need setup console timer.

Signed-off-by: Minggui Cao <minggui.cao@intel.com>
This commit is contained in:
Minggui Cao 2018-05-30 15:37:52 +08:00 committed by lijinxia
parent 04323a0663
commit cd5d8c8da7
1 changed files with 6 additions and 0 deletions
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6
hypervisor/debug/console.c
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@ -201,6 +201,12 @@ void console_setup_timer(void)
static struct timer console_timer;
uint64_t period_in_cycle, fire_tsc;
if (serial_handle == SERIAL_INVALID_HANDLE) {
pr_err("%s: no uart, not need setup console timer",
__func__);
return;
}
period_in_cycle = CYCLES_PER_MS * CONSOLE_KICK_TIMER_TIMEOUT;
fire_tsc = rdtsc() + period_in_cycle;
initialize_timer(&console_timer,