nfc: netlink: fix double device reference drop
authorPan Bian <bianpan2016@163.com>
Thu, 7 Nov 2019 06:29:50 +0000 (14:29 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 12 Nov 2019 18:20:30 +0000 (19:20 +0100)
commit1143496c9632f36ebed57312877b92fd4082d886
tree5c507c4e3d09d7f42b9a41e0b7db2cdc22951231
parent760a1f7f22ee8f7636a00a57707df5095364f0e0
nfc: netlink: fix double device reference drop

[ Upstream commit 025ec40b81d785a98f76b8bdb509ac10773b4f12 ]

The function nfc_put_device(dev) is called twice to drop the reference
to dev when there is no associated local llcp. Remove one of them to fix
the bug.

Fixes: 52feb444a903 ("NFC: Extend netlink interface for LTO, RW, and MIUX parameters support")
Fixes: d9b8d8e19b07 ("NFC: llcp: Service Name Lookup netlink interface")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/nfc/netlink.c