/* Copyright (c) 2011,2012 Intel Corp. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 and only version 2 as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. */ #ifndef __AMP_H #define __AMP_H struct amp_ctrl { struct list_head list; struct kref kref; __u8 id; __u16 assoc_len_so_far; __u16 assoc_rem_len; __u16 assoc_len; __u8 *assoc; }; int amp_ctrl_put(struct amp_ctrl *ctrl); void amp_ctrl_get(struct amp_ctrl *ctrl); struct amp_ctrl *amp_ctrl_add(struct amp_mgr *mgr, u8 id); struct amp_ctrl *amp_ctrl_lookup(struct amp_mgr *mgr, u8 id); void amp_ctrl_list_flush(struct amp_mgr *mgr); struct hci_conn *phylink_add(struct hci_dev *hdev, struct amp_mgr *mgr, u8 remote_id, bool out); int phylink_gen_key(struct hci_conn *hcon, u8 *data, u8 *len, u8 *type); void amp_read_loc_info(struct hci_dev *hdev, struct amp_mgr *mgr); void amp_read_loc_assoc_frag(struct hci_dev *hdev, u8 phy_handle); void amp_read_loc_assoc(struct hci_dev *hdev, struct amp_mgr *mgr); void amp_read_loc_assoc_final_data(struct hci_dev *hdev, struct hci_conn *hcon); void amp_create_phylink(struct hci_dev *hdev, struct amp_mgr *mgr, struct hci_conn *hcon); void amp_accept_phylink(struct hci_dev *hdev, struct amp_mgr *mgr, struct hci_conn *hcon); #if IS_ENABLED(CONFIG_BT_HS) void amp_create_logical_link(struct l2cap_chan *chan); void amp_disconnect_logical_link(struct hci_chan *hchan); #else static inline void amp_create_logical_link(struct l2cap_chan *chan) { } static inline void amp_disconnect_logical_link(struct hci_chan *hchan) { } #endif void amp_write_remote_assoc(struct hci_dev *hdev, u8 handle); void amp_write_rem_assoc_continue(struct hci_dev *hdev, u8 handle); void amp_physical_cfm(struct hci_conn *bredr_hcon, struct hci_conn *hs_hcon); void amp_create_logical_link(struct l2cap_chan *chan); void amp_disconnect_logical_link(struct hci_chan *hchan); void amp_destroy_logical_link(struct hci_chan *hchan, u8 reason); #endif /* __AMP_H */ resources.c'>
path: root/sound/firewire/iso-resources.c
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authorDexuan Cui <decui@microsoft.com>2017-01-28 11:46:02 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-01-31 10:59:48 +0100
commit433e19cf33d34bb6751c874a9c00980552fe508c (patch)
treece6547ef2987fbb289fa28f03536328a42781651 /sound/firewire/iso-resources.c
parent191e885a2e130e639bb0c8ee350d7047294f2ce6 (diff)
Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()
Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") added the proper mb(), but removed the test "prev_write_sz < pending_sz" when making the signal decision. As a result, the guest can signal the host unnecessarily, and then the host can throttle the guest because the host thinks the guest is buggy or malicious; finally the user running stress test can perceive intermittent freeze of the guest. This patch brings back the test, and properly handles the in-place consumption APIs used by NetVSC (see get_next_pkt_raw(), put_pkt_raw() and commit_rd_index()). Fixes: a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()") Signed-off-by: Dexuan Cui <decui@microsoft.com> Reported-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Tested-by: Rolf Neugebauer <rolf.neugebauer@docker.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/firewire/iso-resources.c')