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Date: Tue, 12 May 2020 19:19:27 -0700 From: Abhishek Pandit-Subedi <abhishekpandit@...omium.org> To: marcel@...tmann.org, linux-bluetooth@...r.kernel.org Cc: chromeos-bluetooth-upstreaming@...omium.org, Abhishek Pandit-Subedi <abhishekpandit@...omium.org>, Alain Michaud <alainm@...omium.org>, Johan Hedberg <johan.hedberg@...il.com>, linux-kernel@...r.kernel.org Subject: [PATCH 3/3] Bluetooth: btusb: Implement hdev->prevent_wake Implement the prevent_wake hook by checking device_may_wakeup on the usb interface. This prevents the Bluetooth core from enabling scanning when the device isn't expected to wake from suspend. Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@...omium.org> Reviewed-by: Alain Michaud <alainm@...omium.org> --- drivers/bluetooth/btusb.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 8ae3ad7a60131..c17359c0e3201 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -3698,6 +3698,13 @@ static void btusb_check_needs_reset_resume(struct usb_interface *intf) interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; } +static bool btusb_prevent_wake(struct hci_dev *hdev) +{ + struct btusb_data *data = hci_get_drvdata(hdev); + + return !device_may_wakeup(&data->udev->dev); +} + static int btusb_probe(struct usb_interface *intf, const struct usb_device_id *id) { @@ -3831,6 +3838,7 @@ static int btusb_probe(struct usb_interface *intf, hdev->flush = btusb_flush; hdev->send = btusb_send_frame; hdev->notify = btusb_notify; + hdev->prevent_wake = btusb_prevent_wake; #ifdef CONFIG_PM err = btusb_config_oob_wake(hdev); -- 2.26.2.645.ge9eca65c58-goog
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