mei: fix return value on disconnection

Correct errno on client disconnection is -ENODEV not -EBUSY

Cc: <stable@vger.kernel.org> #4.3+
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index 14b4541..3cf54ca 100644 (file)
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -132,7 +132,7 @@ int mei_amthif_read(struct mei_device *dev, struct file *file,
                        return -ERESTARTSYS;
 
                if (!mei_cl_is_connected(cl)) {
-                       rets = -EBUSY;
+                       rets = -ENODEV;
                        goto out;
                }
 

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 63411dd..9c404dc 100644 (file)
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -143,7 +143,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl, u8 *buf, size_t length)
                mutex_lock(&bus->device_lock);
 
                if (!mei_cl_is_connected(cl)) {
-                       rets = -EBUSY;
+                       rets = -ENODEV;
                        goto out;
                }
        }

diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 3326bde..d62e89c 100644 (file)
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -203,7 +203,7 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
 
                mutex_lock(&dev->device_lock);
                if (!mei_cl_is_connected(cl)) {
-                       rets = -EBUSY;
+                       rets = -ENODEV;
                        goto out;
                }
        }