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Bluetooth: Fix mgmt handling of power on failures

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commit 96570ffcca upstream.

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>
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hedberg 2013-05-29 09:51:29 +03:00 committed by Greg Kroah-Hartman
parent b507d034be
commit 2147439889
4 changed files with 28 additions and 1 deletions
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1
include/net/bluetooth/hci_core.h
View file

@ -976,6 +976,7 @@ 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);

1
include/net/bluetooth/mgmt.h
View file

@ -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;

6
net/bluetooth/hci_core.c
View file

@ -1120,11 +1120,15 @@ EXPORT_SYMBOL(hci_free_dev);
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))
schedule_delayed_work(&hdev->power_off,

21
net/bluetooth/mgmt.c
View file

@ -2833,6 +2833,27 @@ int mgmt_powered(struct hci_dev *hdev, u8 powered)
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 };