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Bluetooth: close HCI device when user channel socket gets closed

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With 9380f9eacf the order of unsetting
the HCI_USER_CHANNEL flag of the HCI device was reverted to ensure
the device is first closed before making it available again.

Due to hci_dev_close checking for HCI_USER_CHANNEL being set on the
device it was never really closed and was kept opened. We're now
calling hci_dev_do_close directly to make sure the device is correctly
closed and we keep the correct order to unset the flag on our device
object.

Signed-off-by: Simon Fels <simon.fels@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Simon Fels 2015-09-02 12:10:12 +02:00 committed by Marcel Holtmann
parent 1b1975749f
commit 6b3cc1db68
3 changed files with 12 additions and 2 deletions
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1
include/net/bluetooth/hci_core.h
View File

@ -987,6 +987,7 @@ int hci_resume_dev(struct hci_dev *hdev);
int hci_reset_dev(struct hci_dev *hdev); int hci_reset_dev(struct hci_dev *hdev);
int hci_dev_open(__u16 dev); int hci_dev_open(__u16 dev);
int hci_dev_close(__u16 dev); int hci_dev_close(__u16 dev);
int hci_dev_do_close(struct hci_dev *hdev);
int hci_dev_reset(__u16 dev); int hci_dev_reset(__u16 dev);
int hci_dev_reset_stat(__u16 dev); int hci_dev_reset_stat(__u16 dev);
int hci_dev_cmd(unsigned int cmd, void __user *arg); int hci_dev_cmd(unsigned int cmd, void __user *arg);

2
net/bluetooth/hci_core.c
View File

@ -1549,7 +1549,7 @@ static void hci_pend_le_actions_clear(struct hci_dev *hdev)
BT_DBG("All LE pending actions cleared"); BT_DBG("All LE pending actions cleared");
} }
static int hci_dev_do_close(struct hci_dev *hdev) int hci_dev_do_close(struct hci_dev *hdev)
{ {
BT_DBG("%s %p", hdev->name, hdev); BT_DBG("%s %p", hdev->name, hdev);

11
net/bluetooth/hci_sock.c
View File

@ -503,7 +503,16 @@ static int hci_sock_release(struct socket *sock)
if (hdev) { if (hdev) {
if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { if (hci_pi(sk)->channel == HCI_CHANNEL_USER) {
hci_dev_close(hdev->id); /* When releasing an user channel exclusive access,
* call hci_dev_do_close directly instead of calling
* hci_dev_close to ensure the exclusive access will
* be released and the controller brought back down.
*
* The checking of HCI_AUTO_OFF is not needed in this
* case since it will have been cleared already when
* opening the user channel.
*/
hci_dev_do_close(hdev);
hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); hci_dev_clear_flag(hdev, HCI_USER_CHANNEL);
mgmt_index_added(hdev); mgmt_index_added(hdev);
} }