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authorJohan Hedberg <johan.hedberg@intel.com>2013-05-29 08:51:29 +0200
committerJohn W. Linville <linville@tuxdriver.com>2013-06-12 16:20:55 +0200
commit96570ffcca0b872dc8626e97569d2697f374d868 (patch)
tree595994f6e332bfa6a9d36a3665428f297b01bbb4
parentBluetooth: Fix missing length checks for L2CAP signalling PDUs (diff)
downloadlinux-96570ffcca0b872dc8626e97569d2697f374d868.tar.xz
linux-96570ffcca0b872dc8626e97569d2697f374d868.zip
Bluetooth: Fix mgmt handling of power on failures
If hci_dev_open fails we need to ensure that the corresponding mgmt_set_powered command gets an appropriate response. This patch fixes the missing response by adding a new mgmt_set_powered_failed function that's used to indicate a power on failure to mgmt. Since a situation with the device being rfkilled may require special handling in user space the patch uses a new dedicated mgmt status code for this. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Cc: stable@vger.kernel.org Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--include/net/bluetooth/hci_core.h1
-rw-r--r--include/net/bluetooth/mgmt.h1
-rw-r--r--net/bluetooth/hci_core.c6
-rw-r--r--net/bluetooth/mgmt.c21
4 files changed, 28 insertions, 1 deletions
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 35a57cd1704c..7cb6d360d147 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1117,6 +1117,7 @@ void hci_sock_dev_event(struct hci_dev *hdev, int event);
int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
int mgmt_index_added(struct hci_dev *hdev);
int mgmt_index_removed(struct hci_dev *hdev);
+int mgmt_set_powered_failed(struct hci_dev *hdev, int err);
int mgmt_powered(struct hci_dev *hdev, u8 powered);
int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index 22980a7c3873..9944c3e68c5d 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -42,6 +42,7 @@
#define MGMT_STATUS_NOT_POWERED 0x0f
#define MGMT_STATUS_CANCELLED 0x10
#define MGMT_STATUS_INVALID_INDEX 0x11
+#define MGMT_STATUS_RFKILLED 0x12
struct mgmt_hdr {
__le16 opcode;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 33843c5c4939..d817c932d634 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1555,11 +1555,15 @@ static const struct rfkill_ops hci_rfkill_ops = {
static void hci_power_on(struct work_struct *work)
{
struct hci_dev *hdev = container_of(work, struct hci_dev, power_on);
+ int err;
BT_DBG("%s", hdev->name);
- if (hci_dev_open(hdev->id) < 0)
+ err = hci_dev_open(hdev->id);
+ if (err < 0) {
+ mgmt_set_powered_failed(hdev, err);
return;
+ }
if (test_bit(HCI_AUTO_OFF, &hdev->dev_flags))
queue_delayed_work(hdev->req_workqueue, &hdev->power_off,
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 5e93b24d01fd..f8ecbc70293d 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3418,6 +3418,27 @@ new_settings:
return err;
}
+int mgmt_set_powered_failed(struct hci_dev *hdev, int err)
+{
+ struct pending_cmd *cmd;
+ u8 status;
+
+ cmd = mgmt_pending_find(MGMT_OP_SET_POWERED, hdev);
+ if (!cmd)
+ return -ENOENT;
+
+ if (err == -ERFKILL)
+ status = MGMT_STATUS_RFKILLED;
+ else
+ status = MGMT_STATUS_FAILED;
+
+ err = cmd_status(cmd->sk, hdev->id, MGMT_OP_SET_POWERED, status);
+
+ mgmt_pending_remove(cmd);
+
+ return err;
+}
+
int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable)
{
struct cmd_lookup match = { NULL, hdev };