ipmi_msghandler.c question
From: Asmaa Mnebhi
Date: Fri Jan 08 2021 - 18:37:50 EST
Hi Corey,
I have a question for you related to the following function in ipmi_msghandler.c
static void __get_guid(struct ipmi_smi *intf)
{
int rv;
struct bmc_device *bmc = intf->bmc;
bmc->dyn_guid_set = 2;
intf->null_user_handler = guid_handler;
rv = send_guid_cmd(intf, 0);
if (rv)
/* Send failed, no GUID available. */
bmc->dyn_guid_set = 0;
else
wait_event(intf->waitq, bmc->dyn_guid_set != 2);
/* dyn_guid_set makes the guid data available. */
smp_rmb();
intf->null_user_handler = NULL;
}
Why is wait_event used as opposed to wait_event_timeout? In the context where the dyn_guid_set value doesn't change from 2, this would run forever. Wouldn't we want to timeout after a certain amount of time?
Thanks.
Asmaa