| Message ID | 1341605393-32056-29-git-send-email-sameo@linux.intel.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c index 03c31db..99bc6f7 100644 --- a/net/nfc/netlink.c +++ b/net/nfc/netlink.c @@ -634,6 +634,15 @@ static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info) if (!dev) return -ENODEV; + device_lock(&dev->dev); + + if (!dev->polling) { + device_unlock(&dev->dev); + return -EINVAL; + } + + device_unlock(&dev->dev); + mutex_lock(&dev->genl_data.genl_data_mutex); if (dev->genl_data.poll_req_pid != info->snd_pid) {
We check for the polling flag before checking if the netlink PID caller match. Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> --- net/nfc/netlink.c | 9 +++++++++ 1 file changed, 9 insertions(+)