Re: [PATCH 2/2] Revert "core: Add provision for terminating an ATT connection"

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On Thu, Mar 8, 2012 at 15:44, Arik Nemtsov <arik@xxxxxxxxxx> wrote:
> This reverts commit f89a77478af78d41c80ab7605662382b9e4e1c36.

The actual commit Id was c4a8ba6d82f1b5c7f14c2abc01242925c60b468d.
It's wrong in the original patch since I reverted it in a private
tree.

>
> This is not needed and actually introduces a bug. When the "Disconnect"
> API of device is called device->attrib is unref-ed via a watch set on
> G_IO_HUP. The channel is shutdown when the last reference is removed.
>
> The code introduced here shuts down the channel and prevents the watch
> from getting called. This means we leak a reference to device->attrib.
> This can cause a number of bad things. For example, if the device is
> temporary, it will never be freed, and we won't be able to pair to it
> again.
> ---
>  src/device.c |    8 --------
>  1 files changed, 0 insertions(+), 8 deletions(-)
>
> diff --git a/src/device.c b/src/device.c
> index b339ac1..0a1de7c 100644
> --- a/src/device.c
> +++ b/src/device.c
> @@ -821,14 +821,6 @@ void device_request_disconnect(struct btd_device *device, DBusMessage *msg)
>                browse_request_cancel(device->browse);
>        }
>
> -       if (device->attrib) {
> -               GIOChannel *io = g_attrib_get_channel(device->attrib);
> -               if (io) {
> -                       g_io_channel_shutdown(io, FALSE, NULL);
> -                       g_io_channel_unref(io);
> -               }
> -       }
> -
>        if (msg)
>                device->disconnects = g_slist_append(device->disconnects,
>                                                dbus_message_ref(msg));
> --
> 1.7.5.4
>
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