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Drivers: hv: utils: Invoke the poll function after handshake

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commit 2d0c3b5ad739697a68dc8a444f5b9f4817cf8f8f upstream.

When the handshake with daemon is complete, we should poll the channel since
during the handshake, we will not be processing any messages. This is a
potential bug if the host is waiting for a response from the guest.
I would like to thank Dexuan for pointing this out.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2015-12-14 16:01:57 -08:00 • committed by Greg Kroah-Hartman
parent 68a318670c
commit f91b8b1fd6
2 changed files with 2 additions and 2 deletions
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2
drivers/hv/hv_kvp.c
View file

@ -155,7 +155,7 @@ static int kvp_handle_handshake(struct hv_kvp_msg *msg)
pr_debug("KVP: userspace daemon ver. %d registered\n",
KVP_OP_REGISTER);
kvp_register(dm_reg_value);
kvp_transaction.state = HVUTIL_READY;
hv_poll_channel(kvp_transaction.recv_channel, kvp_poll_wrapper);
return 0;
}

2
drivers/hv/hv_snapshot.c
View file

@ -114,7 +114,7 @@ static int vss_handle_handshake(struct hv_vss_msg *vss_msg)
default:
return -EINVAL;
}
vss_transaction.state = HVUTIL_READY;
hv_poll_channel(vss_transaction.recv_channel, vss_poll_wrapper);
pr_debug("VSS: userspace daemon ver. %d registered\n", dm_reg_value);
return 0;
}