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authorMarcel Holtmann <marcel@holtmann.org>2008-09-23 00:16:36 +0200
committerMarcel Holtmann <marcel@holtmann.org>2008-09-23 00:16:36 +0200
commit5fbcd260c2c52f78cd699f65e9c7af2e60b5380c (patch)
tree6decac9498b66653f7e327ae82903fa89366f486 /drivers/bluetooth/btusb.c
parente8c3c3d22b340a406a9aab1b7a9f436636c3de9d (diff)
[Bluetooth] Fix USB disconnect handling of btusb driver
The USB transport specification for Bluetooth splits the ACL and SCO handling into two separate interfaces. In Linux it possible to probe and disconnect these interfaces independently. So make sure that both interfaces are tightly bound together. This fixes the suspend regression that some people have expierenced. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btusb.c')
-rw-r--r--drivers/bluetooth/btusb.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index b4756a6a3a6..29ae99817c6 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -172,6 +172,7 @@ static struct usb_device_id blacklist_table[] = {
struct btusb_data {
struct hci_dev *hdev;
struct usb_device *udev;
+ struct usb_interface *intf;
struct usb_interface *isoc;
spinlock_t lock;
@@ -826,6 +827,7 @@ static int btusb_probe(struct usb_interface *intf,
}
data->udev = interface_to_usbdev(intf);
+ data->intf = intf;
spin_lock_init(&data->lock);
@@ -894,7 +896,7 @@ static int btusb_probe(struct usb_interface *intf,
if (data->isoc) {
err = usb_driver_claim_interface(&btusb_driver,
- data->isoc, NULL);
+ data->isoc, data);
if (err < 0) {
hci_free_dev(hdev);
kfree(data);
@@ -926,13 +928,22 @@ static void btusb_disconnect(struct usb_interface *intf)
hdev = data->hdev;
- if (data->isoc)
- usb_driver_release_interface(&btusb_driver, data->isoc);
+ __hci_dev_hold(hdev);
- usb_set_intfdata(intf, NULL);
+ usb_set_intfdata(data->intf, NULL);
+
+ if (data->isoc)
+ usb_set_intfdata(data->isoc, NULL);
hci_unregister_dev(hdev);
+ if (intf == data->isoc)
+ usb_driver_release_interface(&btusb_driver, data->intf);
+ else if (data->isoc)
+ usb_driver_release_interface(&btusb_driver, data->isoc);
+
+ __hci_dev_put(hdev);
+
hci_free_dev(hdev);
}