diff options
Diffstat (limited to 'zephyr/subsys/ap_pwrseq/power_host_sleep.c')
| -rw-r--r-- | zephyr/subsys/ap_pwrseq/power_host_sleep.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/zephyr/subsys/ap_pwrseq/power_host_sleep.c b/zephyr/subsys/ap_pwrseq/power_host_sleep.c index bc38215921..5c91b2503e 100644 --- a/zephyr/subsys/ap_pwrseq/power_host_sleep.c +++ b/zephyr/subsys/ap_pwrseq/power_host_sleep.c @@ -113,8 +113,17 @@ enum ap_power_sleep_type sleep_state = AP_POWER_SLEEP_NONE; */ static void power_s0ix_suspend_clear_masks(void) { - backup_sci_mask = lpc_get_host_event_mask(LPC_HOST_EVENT_SCI); - backup_smi_mask = lpc_get_host_event_mask(LPC_HOST_EVENT_SMI); + host_event_t sci_mask, smi_mask; + + sci_mask = lpc_get_host_event_mask(LPC_HOST_EVENT_SCI); + smi_mask = lpc_get_host_event_mask(LPC_HOST_EVENT_SMI); + + /* Do not backup already-cleared SCI/SMI masks. */ + if (!sci_mask && !smi_mask) + return; + + backup_sci_mask = sci_mask; + backup_smi_mask = smi_mask; lpc_set_host_event_mask(LPC_HOST_EVENT_SCI, 0); lpc_set_host_event_mask(LPC_HOST_EVENT_SMI, 0); } |