[PATCH 4.4 21/21] mei: fix return value on disconnection

[Greg Kroah-Hartman]

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tomas Winkler <tomas.wink...@intel.com>

commit 2d4d5481e2d6f93b25fcfb13a9f20bbfbf54266a upstream.

Correct errno on client disconnection is -ENODEV not -EBUSY

Signed-off-by: Tomas Winkler <tomas.wink...@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usys...@intel.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/misc/mei/bus.c  |    2 +-
 drivers/misc/mei/main.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -144,7 +144,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl,
                mutex_lock(&bus->device_lock);
 
                if (!mei_cl_is_connected(cl)) {
-                       rets = -EBUSY;
+                       rets = -ENODEV;
                        goto out;
                }
        }
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -207,7 +207,7 @@ static ssize_t mei_read(struct file *fil
 
                mutex_lock(&dev->device_lock);
                if (!mei_cl_is_connected(cl)) {
-                       rets = -EBUSY;
+                       rets = -ENODEV;
                        goto out;
                }
        }