From 229ab39caf8c1321527e408725c1350f7c9aaa84 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Fri, 15 Mar 2013 17:06:53 -0500 Subject: [PATCH] Bluetooth: Wait for HCI command completion with mgmt_set_powered We should only notify user space that the adapter has been powered on after all HCI commands related to the action have completed. This patch fixes the issue by instating an async request complete callback for these HCI commands and only notifies user space in the callback. Signed-off-by: Johan Hedberg Acked-by: Marcel Holtmann Signed-off-by: Gustavo Padovan --- net/bluetooth/mgmt.c | 46 ++++++++++++++++++++++++++++++++------------ 1 file changed, 34 insertions(+), 12 deletions(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 4726876298f0..bf17a62a1bef 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -3082,6 +3082,24 @@ static void set_bredr_scan(struct hci_request *req) hci_req_add(req, HCI_OP_WRITE_SCAN_ENABLE, 1, &scan); } +static void powered_complete(struct hci_dev *hdev, u8 status) +{ + struct cmd_lookup match = { NULL, hdev }; + + BT_DBG("status 0x%02x", status); + + hci_dev_lock(hdev); + + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); + + new_settings(hdev, match.sk); + + hci_dev_unlock(hdev); + + if (match.sk) + sock_put(match.sk); +} + static int powered_update_hci(struct hci_dev *hdev) { struct hci_request req; @@ -3123,32 +3141,36 @@ static int powered_update_hci(struct hci_dev *hdev) update_eir(&req); } - return hci_req_run(&req, NULL); + return hci_req_run(&req, powered_complete); } int mgmt_powered(struct hci_dev *hdev, u8 powered) { struct cmd_lookup match = { NULL, hdev }; + u8 status_not_powered = MGMT_STATUS_NOT_POWERED; + u8 zero_cod[] = { 0, 0, 0 }; int err; if (!test_bit(HCI_MGMT, &hdev->dev_flags)) return 0; - mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); - if (powered) { - powered_update_hci(hdev); - } else { - u8 status = MGMT_STATUS_NOT_POWERED; - u8 zero_cod[] = { 0, 0, 0 }; - - mgmt_pending_foreach(0, hdev, cmd_status_rsp, &status); + if (powered_update_hci(hdev) == 0) + return 0; - if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0) - mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, - zero_cod, sizeof(zero_cod), NULL); + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, + &match); + goto new_settings; } + mgmt_pending_foreach(MGMT_OP_SET_POWERED, hdev, settings_rsp, &match); + mgmt_pending_foreach(0, hdev, cmd_status_rsp, &status_not_powered); + + if (memcmp(hdev->dev_class, zero_cod, sizeof(zero_cod)) != 0) + mgmt_event(MGMT_EV_CLASS_OF_DEV_CHANGED, hdev, + zero_cod, sizeof(zero_cod), NULL); + +new_settings: err = new_settings(hdev, match.sk); if (match.sk) -- GitLab