/* BlueZ - Bluetooth protocol stack for Linux Copyright (C) 2011-2012 Intel Corporation This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS SOFTWARE IS DISCLAIMED. */ #ifndef __HCI_MON_H #define __HCI_MON_H struct hci_mon_hdr { __le16 opcode; __le16 index; __le16 len; } __packed; #define HCI_MON_HDR_SIZE 6 #define HCI_MON_NEW_INDEX 0 #define HCI_MON_DEL_INDEX 1 #define HCI_MON_COMMAND_PKT 2 #define HCI_MON_EVENT_PKT 3 #define HCI_MON_ACL_TX_PKT 4 #define HCI_MON_ACL_RX_PKT 5 #define HCI_MON_SCO_TX_PKT 6 #define HCI_MON_SCO_RX_PKT 7 #define HCI_MON_OPEN_INDEX 8 #define HCI_MON_CLOSE_INDEX 9 #define HCI_MON_INDEX_INFO 10 #define HCI_MON_VENDOR_DIAG 11 #define HCI_MON_SYSTEM_NOTE 12 #define HCI_MON_USER_LOGGING 13 #define HCI_MON_CTRL_OPEN 14 #define HCI_MON_CTRL_CLOSE 15 #define HCI_MON_CTRL_COMMAND 16 #define HCI_MON_CTRL_EVENT 17 struct hci_mon_new_index { __u8 type; __u8 bus; bdaddr_t bdaddr; char name[8]; } __packed; #define HCI_MON_NEW_INDEX_SIZE 16 struct hci_mon_index_info { bdaddr_t bdaddr; __le16 manufacturer; } __packed; #define HCI_MON_INDEX_INFO_SIZE 8 #endif /* __HCI_MON_H */ tion/devicetree/bindings/mmc?id=efd1535270c1deb0487527bf0c3c827301a69c93'>commitdiff
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authorBob Liu <bob.liu@oracle.com>2016-06-07 10:43:15 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2016-06-08 13:54:39 -0400
commitefd1535270c1deb0487527bf0c3c827301a69c93 (patch)
treee0afb0ad9d8e7db1ed1d52ba4c07e2278ff2b7c4 /Documentation/devicetree/bindings/mmc
parent116f7d4a21fe450efc652c4850eb27cda36c9db0 (diff)
xen-blkfront: don't call talk_to_blkback when already connected to blkback
Sometimes blkfront may twice receive blkback_changed() notification (XenbusStateConnected) after migration, which will cause talk_to_blkback() to be called twice too and confuse xen-blkback. The flow is as follow: blkfront blkback blkfront_resume() > talk_to_blkback() > Set blkfront to XenbusStateInitialised front changed() > Connect() > Set blkback to XenbusStateConnected blkback_changed() > Skip talk_to_blkback() because frontstate == XenbusStateInitialised > blkfront_connect() > Set blkfront to XenbusStateConnected ----- And here we get another XenbusStateConnected notification leading to: ----- blkback_changed() > because now frontstate != XenbusStateInitialised talk_to_blkback() is also called again > blkfront state changed from XenbusStateConnected to XenbusStateInitialised (Which is not correct!) front_changed(): > Do nothing because blkback already in XenbusStateConnected Now blkback is in XenbusStateConnected but blkfront is still in XenbusStateInitialised - leading to no disks. Poking of the XenbusStateConnected state is allowed (to deal with block disk change) and has to be dealt with. The most likely cause of this bug are custom udev scripts hooking up the disks and then validating the size. Signed-off-by: Bob Liu <bob.liu@oracle.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'Documentation/devicetree/bindings/mmc')