tree 9b38712a19e8c38b32e49c0de44d264916933eb0
parent ccb2cca45acfd1f34bdb19d8ef5e409af40f2533
author Corey Minyard <cminyard@mvista.com> 1501380895 -0500
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1511508958 +0100

ipmi: fix unsigned long underflow

commit 392a17b10ec4320d3c0e96e2a23ebaad1123b989 upstream.

When I set the timeout to a specific value such as 500ms, the timeout
event will not happen in time due to the overflow in function
check_msg_timeout:
...
	ent->timeout -= timeout_period;
	if (ent->timeout > 0)
		return;
...

The type of timeout_period is long, but ent->timeout is unsigned long.
This patch makes the type consistent.

Reported-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Tested-by: Weilong Chen <chenweilong@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>