From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexander Usyskin , Tomas Winkler , Sasha Levin Subject: [PATCH 4.9 58/67] mei: return error on notification request to a disconnected client Date: Mon, 6 Nov 2017 10:44:21 +0100 Message-Id: <20171106091307.709696254@linuxfoundation.org> In-Reply-To: <20171106091305.401025609@linuxfoundation.org> References: <20171106091305.401025609@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexander Usyskin [ Upstream commit 7c47d2ca0feca767479329da23523ed798acb854 ] Request for a notification from a disconnected client will be ignored silently by the FW but the caller should know that the operation hasn't succeeded. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/client.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -1320,6 +1320,9 @@ int mei_cl_notify_request(struct mei_cl return -EOPNOTSUPP; } + if (!mei_cl_is_connected(cl)) + return -ENODEV; + rets = pm_runtime_get(dev->dev); if (rets < 0 && rets != -EINPROGRESS) { pm_runtime_put_noidle(dev->dev);