/* ---- HCI requests ---- */
-void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result)
+static void hci_req_sync_complete(struct hci_dev *hdev, u8 result)
{
- BT_DBG("%s command 0x%4.4x result 0x%2.2x", hdev->name, cmd, 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) {
- struct hci_command_hdr *sent = (void *) hdev->sent_cmd->data;
- u16 opcode = __le16_to_cpu(sent->opcode);
- 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 || 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;
- }
+ BT_DBG("%s result 0x%2.2x", hdev->name, result);
if (hdev->req_status == HCI_REQ_PEND) {
hdev->req_result = result;
/* Execute request and wait for completion. */
static int __hci_req_sync(struct hci_dev *hdev,
- void (*req)(struct hci_dev *hdev, unsigned long opt),
+ void (*func)(struct hci_request *req,
+ unsigned long opt),
unsigned long opt, __u32 timeout)
{
+ struct hci_request req;
DECLARE_WAITQUEUE(wait, current);
int err = 0;
BT_DBG("%s start", hdev->name);
- hdev->req_status = HCI_REQ_PEND;
+ hci_req_init(&req, hdev);
- add_wait_queue(&hdev->req_wait_q, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
+ hdev->req_status = HCI_REQ_PEND;
- req(hdev, opt);
+ func(&req, opt);
- /* If the request didn't send any commands return immediately */
- if (skb_queue_empty(&hdev->cmd_q) && atomic_read(&hdev->cmd_cnt)) {
+ err = hci_req_run(&req, hci_req_sync_complete);
+ if (err < 0) {
hdev->req_status = 0;
- remove_wait_queue(&hdev->req_wait_q, &wait);
+
+ /* ENODATA means the HCI request command queue is empty.
+ * This can happen when a request with conditionals doesn't
+ * trigger any commands to be sent. This is normal behavior
+ * and should not trigger an error return.
+ */
+ if (err == -ENODATA)
+ return 0;
+
return err;
}
+ add_wait_queue(&hdev->req_wait_q, &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+
schedule_timeout(timeout);
remove_wait_queue(&hdev->req_wait_q, &wait);
}
static int hci_req_sync(struct hci_dev *hdev,
- void (*req)(struct hci_dev *hdev, unsigned long opt),
+ void (*req)(struct hci_request *req,
+ unsigned long opt),
unsigned long opt, __u32 timeout)
{
int ret;
return ret;
}
-static void hci_reset_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_reset_req(struct hci_request *req, unsigned long opt)
{
- BT_DBG("%s %ld", hdev->name, opt);
+ BT_DBG("%s %ld", req->hdev->name, opt);
/* Reset device */
- set_bit(HCI_RESET, &hdev->flags);
- hci_send_cmd(hdev, HCI_OP_RESET, 0, NULL);
+ set_bit(HCI_RESET, &req->hdev->flags);
+ hci_req_add(req, HCI_OP_RESET, 0, NULL);
}
-static void bredr_init(struct hci_dev *hdev)
+static void bredr_init(struct hci_request *req)
{
- hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
+ req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_PACKET_BASED;
/* Read Local Supported Features */
- hci_send_cmd(hdev, HCI_OP_READ_LOCAL_FEATURES, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_LOCAL_FEATURES, 0, NULL);
/* Read Local Version */
- hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
/* Read BD Address */
- hci_send_cmd(hdev, HCI_OP_READ_BD_ADDR, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_BD_ADDR, 0, NULL);
}
-static void amp_init(struct hci_dev *hdev)
+static void amp_init(struct hci_request *req)
{
- hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
+ req->hdev->flow_ctl_mode = HCI_FLOW_CTL_MODE_BLOCK_BASED;
/* Read Local Version */
- hci_send_cmd(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_LOCAL_VERSION, 0, NULL);
/* Read Local AMP Info */
- hci_send_cmd(hdev, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_LOCAL_AMP_INFO, 0, NULL);
/* Read Data Blk size */
- hci_send_cmd(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_DATA_BLOCK_SIZE, 0, NULL);
}
-static void hci_init1_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_init1_req(struct hci_request *req, unsigned long opt)
{
+ struct hci_dev *hdev = req->hdev;
+ struct hci_request init_req;
struct sk_buff *skb;
BT_DBG("%s %ld", hdev->name, opt);
/* Driver initialization */
+ hci_req_init(&init_req, hdev);
+
/* Special commands */
while ((skb = skb_dequeue(&hdev->driver_init))) {
bt_cb(skb)->pkt_type = HCI_COMMAND_PKT;
skb->dev = (void *) hdev;
- skb_queue_tail(&hdev->cmd_q, skb);
- queue_work(hdev->workqueue, &hdev->cmd_work);
+ if (skb_queue_empty(&init_req.cmd_q))
+ bt_cb(skb)->req.start = true;
+
+ skb_queue_tail(&init_req.cmd_q, skb);
}
skb_queue_purge(&hdev->driver_init);
+ hci_req_run(&init_req, NULL);
+
/* Reset */
if (!test_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks))
- hci_reset_req(hdev, 0);
+ hci_reset_req(req, 0);
switch (hdev->dev_type) {
case HCI_BREDR:
- bredr_init(hdev);
+ bredr_init(req);
break;
case HCI_AMP:
- amp_init(hdev);
+ amp_init(req);
break;
default:
}
}
-static void bredr_setup(struct hci_dev *hdev)
+static void bredr_setup(struct hci_request *req)
{
struct hci_cp_delete_stored_link_key cp;
__le16 param;
__u8 flt_type;
/* Read Buffer Size (ACL mtu, max pkt, etc.) */
- hci_send_cmd(hdev, HCI_OP_READ_BUFFER_SIZE, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_BUFFER_SIZE, 0, NULL);
/* Read Class of Device */
- hci_send_cmd(hdev, HCI_OP_READ_CLASS_OF_DEV, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_CLASS_OF_DEV, 0, NULL);
/* Read Local Name */
- hci_send_cmd(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_LOCAL_NAME, 0, NULL);
/* Read Voice Setting */
- hci_send_cmd(hdev, HCI_OP_READ_VOICE_SETTING, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_VOICE_SETTING, 0, NULL);
/* Clear Event Filters */
flt_type = HCI_FLT_CLEAR_ALL;
- hci_send_cmd(hdev, HCI_OP_SET_EVENT_FLT, 1, &flt_type);
+ hci_req_add(req, HCI_OP_SET_EVENT_FLT, 1, &flt_type);
/* Connection accept timeout ~20 secs */
param = __constant_cpu_to_le16(0x7d00);
- hci_send_cmd(hdev, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m);
+ hci_req_add(req, HCI_OP_WRITE_CA_TIMEOUT, 2, ¶m);
bacpy(&cp.bdaddr, BDADDR_ANY);
cp.delete_all = 0x01;
- hci_send_cmd(hdev, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp);
+ hci_req_add(req, HCI_OP_DELETE_STORED_LINK_KEY, sizeof(cp), &cp);
}
-static void le_setup(struct hci_dev *hdev)
+static void le_setup(struct hci_request *req)
{
/* Read LE Buffer Size */
- hci_send_cmd(hdev, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL);
+ hci_req_add(req, HCI_OP_LE_READ_BUFFER_SIZE, 0, NULL);
/* Read LE Local Supported Features */
- hci_send_cmd(hdev, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL);
+ hci_req_add(req, HCI_OP_LE_READ_LOCAL_FEATURES, 0, NULL);
/* Read LE Advertising Channel TX Power */
- hci_send_cmd(hdev, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL);
+ hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL);
/* Read LE White List Size */
- hci_send_cmd(hdev, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL);
+ hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL);
/* Read LE Supported States */
- hci_send_cmd(hdev, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL);
+ hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL);
}
static u8 hci_get_inquiry_mode(struct hci_dev *hdev)
return 0x00;
}
-static void hci_setup_inquiry_mode(struct hci_dev *hdev)
+static void hci_setup_inquiry_mode(struct hci_request *req)
{
u8 mode;
- mode = hci_get_inquiry_mode(hdev);
+ mode = hci_get_inquiry_mode(req->hdev);
- hci_send_cmd(hdev, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode);
+ hci_req_add(req, HCI_OP_WRITE_INQUIRY_MODE, 1, &mode);
}
-static void hci_setup_event_mask(struct hci_dev *hdev)
+static void hci_setup_event_mask(struct hci_request *req)
{
+ struct hci_dev *hdev = req->hdev;
+
/* The second byte is 0xff instead of 0x9f (two reserved bits
* disabled) since a Broadcom 1.2 dongle doesn't respond to the
* command otherwise.
if (lmp_le_capable(hdev))
events[7] |= 0x20; /* LE Meta-Event */
- hci_send_cmd(hdev, HCI_OP_SET_EVENT_MASK, sizeof(events), events);
+ hci_req_add(req, HCI_OP_SET_EVENT_MASK, sizeof(events), events);
if (lmp_le_capable(hdev)) {
memset(events, 0, sizeof(events));
events[0] = 0x1f;
- hci_send_cmd(hdev, HCI_OP_LE_SET_EVENT_MASK,
- sizeof(events), events);
+ hci_req_add(req, HCI_OP_LE_SET_EVENT_MASK,
+ sizeof(events), events);
}
}
-static void hci_init2_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_init2_req(struct hci_request *req, unsigned long opt)
{
+ struct hci_dev *hdev = req->hdev;
+
if (lmp_bredr_capable(hdev))
- bredr_setup(hdev);
+ bredr_setup(req);
if (lmp_le_capable(hdev))
- le_setup(hdev);
+ le_setup(req);
- hci_setup_event_mask(hdev);
+ hci_setup_event_mask(req);
if (hdev->hci_ver > BLUETOOTH_VER_1_1)
- hci_send_cmd(hdev, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_LOCAL_COMMANDS, 0, NULL);
if (lmp_ssp_capable(hdev)) {
if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
u8 mode = 0x01;
- hci_send_cmd(hdev, HCI_OP_WRITE_SSP_MODE,
- sizeof(mode), &mode);
+ hci_req_add(req, HCI_OP_WRITE_SSP_MODE,
+ sizeof(mode), &mode);
} else {
struct hci_cp_write_eir cp;
memset(hdev->eir, 0, sizeof(hdev->eir));
memset(&cp, 0, sizeof(cp));
- hci_send_cmd(hdev, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
+ hci_req_add(req, HCI_OP_WRITE_EIR, sizeof(cp), &cp);
}
}
if (lmp_inq_rssi_capable(hdev))
- hci_setup_inquiry_mode(hdev);
+ hci_setup_inquiry_mode(req);
if (lmp_inq_tx_pwr_capable(hdev))
- hci_send_cmd(hdev, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL);
+ hci_req_add(req, HCI_OP_READ_INQ_RSP_TX_POWER, 0, NULL);
if (lmp_ext_feat_capable(hdev)) {
struct hci_cp_read_local_ext_features cp;
cp.page = 0x01;
- hci_send_cmd(hdev, HCI_OP_READ_LOCAL_EXT_FEATURES, sizeof(cp),
- &cp);
+ hci_req_add(req, HCI_OP_READ_LOCAL_EXT_FEATURES,
+ sizeof(cp), &cp);
}
if (test_bit(HCI_LINK_SECURITY, &hdev->dev_flags)) {
u8 enable = 1;
- hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable),
- &enable);
+ hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, sizeof(enable),
+ &enable);
}
}
-static void hci_setup_link_policy(struct hci_dev *hdev)
+static void hci_setup_link_policy(struct hci_request *req)
{
+ struct hci_dev *hdev = req->hdev;
struct hci_cp_write_def_link_policy cp;
u16 link_policy = 0;
link_policy |= HCI_LP_PARK;
cp.policy = cpu_to_le16(link_policy);
- hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp);
+ hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, sizeof(cp), &cp);
}
-static void hci_set_le_support(struct hci_dev *hdev)
+static void hci_set_le_support(struct hci_request *req)
{
+ struct hci_dev *hdev = req->hdev;
struct hci_cp_write_le_host_supported cp;
memset(&cp, 0, sizeof(cp));
}
if (cp.le != lmp_host_le_capable(hdev))
- hci_send_cmd(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp),
- &cp);
+ hci_req_add(req, HCI_OP_WRITE_LE_HOST_SUPPORTED, sizeof(cp),
+ &cp);
}
-static void hci_init3_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_init3_req(struct hci_request *req, unsigned long opt)
{
+ struct hci_dev *hdev = req->hdev;
+
if (hdev->commands[5] & 0x10)
- hci_setup_link_policy(hdev);
+ hci_setup_link_policy(req);
if (lmp_le_capable(hdev))
- hci_set_le_support(hdev);
+ hci_set_le_support(req);
}
static int __hci_init(struct hci_dev *hdev)
return __hci_req_sync(hdev, hci_init3_req, 0, HCI_INIT_TIMEOUT);
}
-static void hci_scan_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_scan_req(struct hci_request *req, unsigned long opt)
{
__u8 scan = opt;
- BT_DBG("%s %x", hdev->name, scan);
+ BT_DBG("%s %x", req->hdev->name, scan);
/* Inquiry and Page scans */
- hci_send_cmd(hdev, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
+ hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan);
}
-static void hci_auth_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_auth_req(struct hci_request *req, unsigned long opt)
{
__u8 auth = opt;
- BT_DBG("%s %x", hdev->name, auth);
+ BT_DBG("%s %x", req->hdev->name, auth);
/* Authentication */
- hci_send_cmd(hdev, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth);
+ hci_req_add(req, HCI_OP_WRITE_AUTH_ENABLE, 1, &auth);
}
-static void hci_encrypt_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_encrypt_req(struct hci_request *req, unsigned long opt)
{
__u8 encrypt = opt;
- BT_DBG("%s %x", hdev->name, encrypt);
+ BT_DBG("%s %x", req->hdev->name, encrypt);
/* Encryption */
- hci_send_cmd(hdev, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt);
+ hci_req_add(req, HCI_OP_WRITE_ENCRYPT_MODE, 1, &encrypt);
}
-static void hci_linkpol_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_linkpol_req(struct hci_request *req, unsigned long opt)
{
__le16 policy = cpu_to_le16(opt);
- BT_DBG("%s %x", hdev->name, policy);
+ BT_DBG("%s %x", req->hdev->name, policy);
/* Default link policy */
- hci_send_cmd(hdev, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy);
+ hci_req_add(req, HCI_OP_WRITE_DEF_LINK_POLICY, 2, &policy);
}
/* Get HCI device by index.
return copied;
}
-static void hci_inq_req(struct hci_dev *hdev, unsigned long opt)
+static void hci_inq_req(struct hci_request *req, unsigned long opt)
{
struct hci_inquiry_req *ir = (struct hci_inquiry_req *) opt;
+ struct hci_dev *hdev = req->hdev;
struct hci_cp_inquiry cp;
BT_DBG("%s", hdev->name);
memcpy(&cp.lap, &ir->lap, 3);
cp.length = ir->length;
cp.num_rsp = ir->num_rsp;
- hci_send_cmd(hdev, HCI_OP_INQUIRY, sizeof(cp), &cp);
+ hci_req_add(req, HCI_OP_INQUIRY, sizeof(cp), &cp);
}
int hci_inquiry(void __user *arg)
if (!test_bit(HCI_RAW, &hdev->flags)) {
atomic_set(&hdev->cmd_cnt, 1);
set_bit(HCI_INIT, &hdev->flags);
- hdev->init_last_cmd = 0;
-
ret = __hci_init(hdev);
-
clear_bit(HCI_INIT, &hdev->flags);
}
return mgmt_device_unblocked(hdev, bdaddr, type);
}
-static void le_scan_param_req(struct hci_dev *hdev, unsigned long opt)
+static void le_scan_param_req(struct hci_request *req, unsigned long opt)
{
struct le_scan_params *param = (struct le_scan_params *) opt;
struct hci_cp_le_set_scan_param cp;
cp.interval = cpu_to_le16(param->interval);
cp.window = cpu_to_le16(param->window);
- hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp);
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_PARAM, sizeof(cp), &cp);
}
-static void le_scan_enable_req(struct hci_dev *hdev, unsigned long opt)
+static void le_scan_enable_req(struct hci_request *req, unsigned long opt)
{
struct hci_cp_le_set_scan_enable cp;
cp.enable = 1;
cp.filter_dup = 1;
- hci_send_cmd(hdev, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
+ hci_req_add(req, HCI_OP_LE_SET_SCAN_ENABLE, sizeof(cp), &cp);
}
static int hci_do_le_scan(struct hci_dev *hdev, u8 type, u16 interval,
{
skb_queue_head_init(&req->cmd_q);
req->hdev = hdev;
+ req->err = 0;
}
int hci_req_run(struct hci_request *req, hci_req_complete_t complete)
BT_DBG("length %u", skb_queue_len(&req->cmd_q));
+ /* If an error occured during request building, remove all HCI
+ * commands queued on the HCI request queue.
+ */
+ if (req->err) {
+ skb_queue_purge(&req->cmd_q);
+ return req->err;
+ }
+
/* Do not allow empty requests */
if (skb_queue_empty(&req->cmd_q))
- return -EINVAL;
+ return -ENODATA;
skb = skb_peek_tail(&req->cmd_q);
bt_cb(skb)->req.complete = complete;
return -ENOMEM;
}
- if (test_bit(HCI_INIT, &hdev->flags))
- hdev->init_last_cmd = opcode;
+ /* Stand-alone HCI commands must be flaged as
+ * single-command requests.
+ */
+ bt_cb(skb)->req.start = true;
skb_queue_tail(&hdev->cmd_q, skb);
queue_work(hdev->workqueue, &hdev->cmd_work);
}
/* Queue a command to an asynchronous HCI request */
-int hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
+void hci_req_add(struct hci_request *req, u16 opcode, u32 plen, void *param)
{
struct hci_dev *hdev = req->hdev;
struct sk_buff *skb;
skb = hci_prepare_cmd(hdev, opcode, plen, param);
if (!skb) {
- BT_ERR("%s no memory for command", hdev->name);
- return -ENOMEM;
+ BT_ERR("%s no memory for command (opcode 0x%4.4x)",
+ hdev->name, opcode);
+ req->err = -ENOMEM;
+ return;
}
if (skb_queue_empty(&req->cmd_q))
bt_cb(skb)->req.start = true;
skb_queue_tail(&req->cmd_q, skb);
-
- return 0;
}
/* Get data from the previously sent command */
kfree_skb(skb);
}
+static bool hci_req_is_complete(struct hci_dev *hdev)
+{
+ struct sk_buff *skb;
+
+ skb = skb_peek(&hdev->cmd_q);
+ if (!skb)
+ return true;
+
+ return bt_cb(skb)->req.start;
+}
+
+static void hci_resend_last(struct hci_dev *hdev)
+{
+ struct hci_command_hdr *sent;
+ struct sk_buff *skb;
+ u16 opcode;
+
+ if (!hdev->sent_cmd)
+ return;
+
+ sent = (void *) hdev->sent_cmd->data;
+ opcode = __le16_to_cpu(sent->opcode);
+ if (opcode == HCI_OP_RESET)
+ return;
+
+ skb = skb_clone(hdev->sent_cmd, GFP_KERNEL);
+ if (!skb)
+ return;
+
+ skb_queue_head(&hdev->cmd_q, skb);
+ queue_work(hdev->workqueue, &hdev->cmd_work);
+}
+
+void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status)
+{
+ hci_req_complete_t req_complete = NULL;
+ struct sk_buff *skb;
+ unsigned long flags;
+
+ BT_DBG("opcode 0x%04x status 0x%02x", opcode, status);
+
+ /* If the completed command doesn't match the last one that was
+ * sent we need to do special handling of it.
+ */
+ if (!hci_sent_cmd_data(hdev, opcode)) {
+ /* 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 (test_bit(HCI_INIT, &hdev->flags) && opcode == HCI_OP_RESET)
+ hci_resend_last(hdev);
+
+ return;
+ }
+
+ /* If the command succeeded and there's still more commands in
+ * this request the request is not yet complete.
+ */
+ if (!status && !hci_req_is_complete(hdev))
+ return;
+
+ /* If this was the last command in a request the complete
+ * callback would be found in hdev->sent_cmd instead of the
+ * command queue (hdev->cmd_q).
+ */
+ if (hdev->sent_cmd) {
+ req_complete = bt_cb(hdev->sent_cmd)->req.complete;
+ if (req_complete)
+ goto call_complete;
+ }
+
+ /* Remove all pending commands belonging to this request */
+ spin_lock_irqsave(&hdev->cmd_q.lock, flags);
+ while ((skb = __skb_dequeue(&hdev->cmd_q))) {
+ if (bt_cb(skb)->req.start) {
+ __skb_queue_head(&hdev->cmd_q, skb);
+ break;
+ }
+
+ req_complete = bt_cb(skb)->req.complete;
+ kfree_skb(skb);
+ }
+ spin_unlock_irqrestore(&hdev->cmd_q.lock, flags);
+
+call_complete:
+ if (req_complete)
+ req_complete(hdev, status);
+}
+
+void hci_req_cmd_status(struct hci_dev *hdev, u16 opcode, u8 status)
+{
+ hci_req_complete_t req_complete = NULL;
+
+ BT_DBG("opcode 0x%04x status 0x%02x", opcode, status);
+
+ if (status) {
+ hci_req_cmd_complete(hdev, opcode, status);
+ return;
+ }
+
+ /* No need to handle success status if there are more commands */
+ if (!hci_req_is_complete(hdev))
+ return;
+
+ if (hdev->sent_cmd)
+ req_complete = bt_cb(hdev->sent_cmd)->req.complete;
+
+ /* If the request doesn't have a complete callback or there
+ * are other commands/requests in the hdev queue we consider
+ * this request as completed.
+ */
+ if (!req_complete || !skb_queue_empty(&hdev->cmd_q))
+ hci_req_cmd_complete(hdev, opcode, status);
+}
+
static void hci_rx_work(struct work_struct *work)
{
struct hci_dev *hdev = container_of(work, struct hci_dev, rx_work);
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blobdiff