From: Oliver Neukum <oneukum@suse.com>
Date: Thu, 14 Nov 2019 15:01:18 +0000 (+0100)
Subject: Bluetooth: btusb: fix PM leak in error case of setup
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c4095a6d70c6d0e8b87df2491e0d68b7bdbcef7f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Bluetooth: btusb: fix PM leak in error case of setup

commit 3d44a6fd0775e6215e836423e27f8eedf8c871ea upstream.

If setup() fails a reference for runtime PM has already
been taken. Proper use of the error handling in btusb_open()is needed.
You cannot just return.

Fixes: ace31982585a3 ("Bluetooth: btusb: Add setup callback for chip init on USB")
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index 1d1c0d7aec88..4e3b24a0511f 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -1069,7 +1069,7 @@ static int btusb_open(struct hci_dev *hdev)
 	if (data->setup_on_usb) {
 		err = data->setup_on_usb(hdev);
 		if (err < 0)
-			return err;
+			goto setup_fail;
 	}
 
 	data->intf->needs_remote_wakeup = 1;
@@ -1101,6 +1101,7 @@ done:
 
 failed:
 	clear_bit(BTUSB_INTR_RUNNING, &data->flags);
+setup_fail:
 	usb_autopm_put_interface(data->intf);
 	return err;
 }