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hyperv/vmbus: Stringent GPADL parameter assertion.

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MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D8632
This commit is contained in:
Sepherosa Ziehau 2016-11-28 07:04:32 +00:00
parent fa643a5d0a
commit 6555f01eec
1 changed files with 3 additions and 5 deletions
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8
sys/dev/hyperv/vmbus/vmbus_chan.c
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@ -502,11 +502,7 @@ vmbus_chan_gpadl_connect(struct vmbus_channel *chan, bus_addr_t paddr,
int page_count, range_len, i, cnt, error;
uint64_t page_id;
/*
* Reset GPADL, so that the result would consistent, if error
* happened later on.
*/
*gpadl0 = 0;
KASSERT(*gpadl0 == 0, ("GPADL is not zero"));
/*
* Preliminary checks.
@ -652,6 +648,8 @@ vmbus_chan_gpadl_disconnect(struct vmbus_channel *chan, uint32_t gpadl)
struct vmbus_chanmsg_gpadl_disconn *req;
int error;
KASSERT(gpadl != 0, ("GPADL is zero"));
mh = vmbus_msghc_get(sc, sizeof(*req));
if (mh == NULL) {
vmbus_chan_printf(chan,