From b7d0bf11a7ad0e97721a5c4a209ba749649f8b9e Mon Sep 17 00:00:00 2001
From: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Date: Tue, 12 May 2020 19:19:27 -0700
Subject: [PATCH] Bluetooth: btusb: Implement hdev->prevent_wake
Git-commit: b7d0bf11a7ad0e97721a5c4a209ba749649f8b9e
Patch-mainline: v5.8-rc1
References: jsc#SLE-13430
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@chromium.org>
Reviewed-by: Alain Michaud <alainm@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/bluetooth/btusb.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 8ae3ad7a6013..c17359c0e320 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);
--
2.16.4