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authorDexuan Cui <decui@microsoft.com>2016-01-27 22:29:42 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-07 21:34:12 -0800
commit499e8401a515d04daa986b995da710d2b9737764 (patch)
treec4ed9be1227b81aba0a72632afbc6cab33e9d12a /drivers/hv
parent8981da320a11217589aa3c50f9e891bcdef07ece (diff)
Drivers: hv: vmbus: add a per-channel rescind callback
This will be used by the coming hv_sock driver. Signed-off-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/channel_mgmt.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 60ca25b93b4c..76864c98a110 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -741,6 +741,10 @@ static void vmbus_onoffer_rescind(struct vmbus_channel_message_header *hdr)
spin_unlock_irqrestore(&channel->lock, flags);
if (channel->device_obj) {
+ if (channel->chn_rescind_callback) {
+ channel->chn_rescind_callback(channel);
+ return;
+ }
/*
* We will have to unregister this device from the
* driver core.
@@ -1110,3 +1114,10 @@ bool vmbus_are_subchannels_present(struct vmbus_channel *primary)
return ret;
}
EXPORT_SYMBOL_GPL(vmbus_are_subchannels_present);
+
+void vmbus_set_chn_rescind_callback(struct vmbus_channel *channel,
+ void (*chn_rescind_cb)(struct vmbus_channel *))
+{
+ channel->chn_rescind_callback = chn_rescind_cb;
+}
+EXPORT_SYMBOL_GPL(vmbus_set_chn_rescind_callback);