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Bluetooth: Fix init sequence for some CSR based controllers 

Some CSR controllers will generate a spontaneous reset during init and
just eat up any pending command without sending a command complete for
it. This patch solves the issue by just resending whatever was the last
sent command. hci_send_cmd is not used since we need to bypass all other
commands in the send queue.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2012-03-01 21:35:55 +02:00
parent 8b90129cc5
commit 75fb0e324d
1 changed files with 21 additions and 1 deletions
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22
net/bluetooth/hci_core.c
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@ -82,8 +82,28 @@ void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result)
/* If this is the init phase check if the completed command matches
* the last init command, and if not just return.
*/
if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd)
if (test_bit(HCI_INIT, &hdev->flags) && hdev->init_last_cmd != cmd) {
struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data;
struct sk_buff *skb;
/* Some CSR based controllers generate a spontaneous
* reset complete event during init and any pending
* command will never be completed. In such a case we
* need to resend whatever was the last sent
* command.
*/
if (cmd != HCI_OP_RESET || sent->opcode == HCI_OP_RESET)
return;
skb = skb_clone(hdev->sent_cmd, GFP_ATOMIC);
if (skb) {
skb_queue_head(&hdev->cmd_q, skb);
queue_work(hdev->workqueue, &hdev->cmd_work);
}
return;
}
if (hdev->req_status == HCI_REQ_PEND) {
hdev->req_result = result;