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Bluetooth: Unregister suspend with userchannel 

When HCI_USERCHANNEL is used, unregister the suspend notifier when
binding and register when releasing. The userchannel socket should be
left alone after open is completed.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Abhishek Pandit-Subedi 2022-06-02 09:46:50 -07:00 committed by Luiz Augusto von Dentz
parent 0acef50ba3
commit 359ee4f834
3 changed files with 30 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/net/bluetooth/hci_core.h
View File

@ -1286,6 +1286,8 @@ void hci_free_dev(struct hci_dev *hdev);
int hci_register_dev(struct hci_dev *hdev);
void hci_unregister_dev(struct hci_dev *hdev);
void hci_release_dev(struct hci_dev *hdev);
int hci_register_suspend_notifier(struct hci_dev *hdev);
int hci_unregister_suspend_notifier(struct hci_dev *hdev);
int hci_suspend_dev(struct hci_dev *hdev);
int hci_resume_dev(struct hci_dev *hdev);
int hci_reset_dev(struct hci_dev *hdev);

33
net/bluetooth/hci_core.c
View File

@ -2647,12 +2647,8 @@ int hci_register_dev(struct hci_dev *hdev)
hci_sock_dev_event(hdev, HCI_DEV_REG);
hci_dev_hold(hdev);
if (!test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks)) {
hdev->suspend_notifier.notifier_call = hci_suspend_notifier;
error = register_pm_notifier(&hdev->suspend_notifier);
if (error)
goto err_wqueue;
}
if (hci_register_suspend_notifier(hdev))
goto err_wqueue;
queue_work(hdev->req_workqueue, &hdev->power_on);
@ -2687,8 +2683,7 @@ void hci_unregister_dev(struct hci_dev *hdev)
hci_cmd_sync_clear(hdev);
if (!test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks))
unregister_pm_notifier(&hdev->suspend_notifier);
hci_unregister_suspend_notifier(hdev);
msft_unregister(hdev);
@ -2752,6 +2747,28 @@ void hci_release_dev(struct hci_dev *hdev)
}
EXPORT_SYMBOL(hci_release_dev);
int hci_register_suspend_notifier(struct hci_dev *hdev)
{
int ret = 0;
if (!test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks)) {
hdev->suspend_notifier.notifier_call = hci_suspend_notifier;
ret = register_pm_notifier(&hdev->suspend_notifier);
}
return ret;
}
int hci_unregister_suspend_notifier(struct hci_dev *hdev)
{
int ret = 0;
if (!test_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks))
ret = unregister_pm_notifier(&hdev->suspend_notifier);
return ret;
}
/* Suspend HCI device */
int hci_suspend_dev(struct hci_dev *hdev)
{

3
net/bluetooth/hci_sock.c
View File

@ -887,6 +887,7 @@ static int hci_sock_release(struct socket *sock)
*/
hci_dev_do_close(hdev);
hci_dev_clear_flag(hdev, HCI_USER_CHANNEL);
hci_register_suspend_notifier(hdev);
mgmt_index_added(hdev);
}
@ -1215,6 +1216,7 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
}
mgmt_index_removed(hdev);
hci_unregister_suspend_notifier(hdev);
err = hci_dev_open(hdev->id);
if (err) {
@ -1229,6 +1231,7 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
err = 0;
} else {
hci_dev_clear_flag(hdev, HCI_USER_CHANNEL);
hci_register_suspend_notifier(hdev);
mgmt_index_added(hdev);
hci_dev_put(hdev);
goto done;