linux-kernel - [char-msic 3/3] mei: fix return value on disconnection

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Date:   Tue, 29 Nov 2016 14:44:46 +0200
From:   Tomas Winkler <tomas.winkler@...el.com>
To:     stable@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Alexander Usyskin <alexander.usyskin@...el.com>
Subject: [char-msic 3/3] mei: fix return value on disconnection

commit 2d4d5481e2d6f93b25fcfb13a9f20bbfbf54266a upstream.

Correct errno on client disconnection is -ENODEV not -EBUSY

Cc: <stable@...r.kernel.org> #4.4
Signed-off-by: Tomas Winkler <tomas.winkler@...el.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/misc/mei/bus.c  | 2 +-
 drivers/misc/mei/main.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index a77643954523..e59838231703 100644
--- 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, 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 80f9afcb1382..4ef189a7a2fb 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -207,7 +207,7 @@ 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;
 		}
 	}
-- 
2.7.4