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hyperv/vmbus: Propagate close error.

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MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D8599
This commit is contained in:
Sepherosa Ziehau 2016-11-25 08:57:52 +00:00
parent 0743140a63
commit 892b35bc36
1 changed files with 10 additions and 3 deletions
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13
sys/dev/hyperv/vmbus/vmbus_chan.c
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@ -53,7 +53,7 @@ __FBSDID("$FreeBSD$");
static void vmbus_chan_update_evtflagcnt(
struct vmbus_softc *,
const struct vmbus_channel *);
static void vmbus_chan_close_internal(
static int vmbus_chan_close_internal(
struct vmbus_channel *);
static int vmbus_chan_sysctl_mnf(SYSCTL_HANDLER_ARGS);
static void vmbus_chan_sysctl_create(
@ -739,7 +739,7 @@ vmbus_chan_set_chmap(struct vmbus_channel *chan)
chan->ch_vmbus->vmbus_chmap[chan->ch_id] = chan;
}
static void
static int
vmbus_chan_close_internal(struct vmbus_channel *chan)
{
struct vmbus_softc *sc = chan->ch_vmbus;
@ -765,7 +765,7 @@ vmbus_chan_close_internal(struct vmbus_channel *chan)
vmbus_chan_printf(chan, "chan%u not opened\n",
chan->ch_id);
}
return;
return (0);
}
/*
@ -792,6 +792,7 @@ vmbus_chan_close_internal(struct vmbus_channel *chan)
vmbus_chan_printf(chan,
"can not get msg hypercall for chclose(chan%u)\n",
chan->ch_id);
error = ENXIO;
goto disconnect;
}
@ -831,6 +832,11 @@ disconnect:
vmbus_chan_printf(chan, "chan%u bufring GPADL "
"is still connected after close\n", chan->ch_id);
chan->ch_bufring = NULL;
/*
* Give caller a hint that the bufring GPADL is
* still connected.
*/
error = EISCONN;
}
chan->ch_bufring_gpadl = 0;
}
@ -842,6 +848,7 @@ disconnect:
hyperv_dmamem_free(&chan->ch_bufring_dma, chan->ch_bufring);
chan->ch_bufring = NULL;
}
return (error);
}
/*