Differential D8566 Diff 22493 head/sys/dev/hyperv/vmbus/vmbus_chan.c

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	}			}

	static void			static void
	vmbus_chan_close_internal(struct vmbus_channel *chan)			vmbus_chan_close_internal(struct vmbus_channel *chan)
	{			{
	struct vmbus_softc *sc = chan->ch_vmbus;			struct vmbus_softc *sc = chan->ch_vmbus;
	struct vmbus_msghc *mh;			struct vmbus_msghc *mh;
	struct vmbus_chanmsg_chclose *req;			struct vmbus_chanmsg_chclose *req;
				uint32_t old_stflags;
	int error;			int error;

	/* TODO: stringent check */			/*
	atomic_clear_int(&chan->ch_stflags, VMBUS_CHAN_ST_OPENED);			* NOTE:
				* Sub-channels are closed upon their primary channel closing,
				* so they can be closed even before they are opened.
				*/
				for (;;) {
				old_stflags = chan->ch_stflags;
				if (atomic_cmpset_int(&chan->ch_stflags, old_stflags,
				old_stflags & ~VMBUS_CHAN_ST_OPENED))
				break;
				}
				if ((old_stflags & VMBUS_CHAN_ST_OPENED) == 0) {
				/* Not opened yet; done */
				if (bootverbose) {
				vmbus_chan_printf(chan, "chan%u not opened\n",
				chan->ch_id);
				}
				return;
				}

	/*			/*
	* Free this channel's sysctl tree attached to its device's			* Free this channel's sysctl tree attached to its device's
	* sysctl tree.			* sysctl tree.
	*/			*/
	sysctl_ctx_free(&chan->ch_sysctl_ctx);			sysctl_ctx_free(&chan->ch_sysctl_ctx);

	/*			/*
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