From: Robin Holt Date: Wed, 16 Dec 2009 00:47:58 +0000 (-0800) Subject: X86: uv: xpc_make_first_contact hang due to not accepting ACTIVE state X-Git-Tag: v2.6.33-rc1~71^2~43 X-Git-Url: http://bbs.cooldavid.org/git/?a=commitdiff_plain;h=dbd2918ec65c35f36bb102c88eafe87be0552f6f;p=net-next-2.6.git X86: uv: xpc_make_first_contact hang due to not accepting ACTIVE state Many times while the initial connection is being made, the contacted partition will send back both the ACTIVATING and the ACTIVE remote_act_state changes in very close succescion. The 1/4 second delay in the make first contact loop is large enough to nearly always miss the ACTIVATING state change. Since either state indicates the remote partition has acknowledged our state change, accept either. Signed-off-by: Robin Holt Cc: Jack Steiner Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c index 19bd7b0ede9..241ea5f01aa 100644 --- a/drivers/misc/sgi-xp/xpc_uv.c +++ b/drivers/misc/sgi-xp/xpc_uv.c @@ -1024,7 +1024,8 @@ xpc_make_first_contact_uv(struct xpc_partition *part) xpc_send_activate_IRQ_part_uv(part, &msg, sizeof(msg), XPC_ACTIVATE_MQ_MSG_SYNC_ACT_STATE_UV); - while (part->sn.uv.remote_act_state != XPC_P_AS_ACTIVATING) { + while (!((part->sn.uv.remote_act_state == XPC_P_AS_ACTIVATING) || + (part->sn.uv.remote_act_state == XPC_P_AS_ACTIVE))) { dev_dbg(xpc_part, "waiting to make first contact with " "partition %d\n", XPC_PARTID(part));