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Bluetooth: Fix HCI_RESET command synchronization

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We can't send new commands before a cmd_complete for the HCI_RESET command
shows up.

Reported-by: Mikko Vinni <mmvinni@yahoo.com>
Reported-by: Justin P. Mattock <justinmattock@gmail.com>
Reported-by: Ed Tomlinson <edt@aei.ca>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Tested-by: Justin P. Mattock <justinmattock@gmail.com>
Tested-by: Mikko Vinni <mmvinni@yahoo.com>
Tested-by: Ed Tomlinson <edt@aei.ca>
This commit is contained in:
Gustavo F. Padovan 2011-03-16 15:36:29 -03:00
parent 23e9fde2b3
commit 105721328f
3 changed files with 10 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/net/bluetooth/hci.h
View file

@ -84,6 +84,8 @@ enum {
HCI_SERVICE_CACHE,
HCI_LINK_KEYS,
HCI_DEBUG_KEYS,
HCI_RESET,
};
/* HCI ioctl defines */

6
net/bluetooth/hci_core.c
View file

@ -186,6 +186,7 @@ static void hci_reset_req(struct hci_dev *hdev, unsigned long opt)
BT_DBG("%s %ld", hdev->name, opt);
/* Reset device */
set_bit(HCI_RESET, &hdev->flags);
hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
}
@ -213,8 +214,10 @@ static void hci_init_req(struct hci_dev *hdev, unsigned long opt)
/* Mandatory initialization */
/* Reset */
if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks))
if (!test_bit(HCI_QUIRK_NO_RESET, &hdev->quirks)) {
set_bit(HCI_RESET, &hdev->flags);
hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
}
/* Read Local Supported Features */
hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL);
@ -1074,6 +1077,7 @@ static void hci_cmd_timer(unsigned long arg)
BT_ERR("%s command tx timeout", hdev->name);
atomic_set(&hdev->cmd_cnt, 1);
clear_bit(HCI_RESET, &hdev->flags);
tasklet_schedule(&hdev->cmd_task);
}

4
net/bluetooth/hci_event.c
View file

@ -183,6 +183,8 @@ static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb)
BT_DBG("%s status 0x%x", hdev->name, status);
clear_bit(HCI_RESET, &hdev->flags);
hci_req_complete(hdev, HCI_OP_RESET, status);
}
@ -1847,7 +1849,7 @@ static inline void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb)
if (ev->opcode != HCI_OP_NOP)
del_timer(&hdev->cmd_timer);
if (ev->ncmd) {
if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) {
atomic_set(&hdev->cmd_cnt, 1);
if (!skb_queue_empty(&hdev->cmd_q))
tasklet_schedule(&hdev->cmd_task);