releases/4.4.36/mei-fix-return-value-on-disconnection.patch

   1 From 2d4d5481e2d6f93b25fcfb13a9f20bbfbf54266a Mon Sep 17 00:00:00 2001
   2 From: Tomas Winkler <tomas.winkler@intel.com>
   3 Date: Thu, 23 Jun 2016 00:25:31 +0300
   4 Subject: mei: fix return value on disconnection
   5
   6 From: Tomas Winkler <tomas.winkler@intel.com>
   7
   8 commit 2d4d5481e2d6f93b25fcfb13a9f20bbfbf54266a upstream.
   9
  10 Correct errno on client disconnection is -ENODEV not -EBUSY
  11
  12 Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
  13 Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
  14 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  15
  16 ---
  17  drivers/misc/mei/bus.c  |    2 +-
  18  drivers/misc/mei/main.c |    2 +-
  19  2 files changed, 2 insertions(+), 2 deletions(-)
  20
  21 --- a/drivers/misc/mei/bus.c
  22 +++ b/drivers/misc/mei/bus.c
  23 @@ -144,7 +144,7 @@ ssize_t __mei_cl_recv(struct mei_cl *cl,
  24                 mutex_lock(&bus->device_lock);
  25
  26                 if (!mei_cl_is_connected(cl)) {
  27 -                       rets = -EBUSY;
  28 +                       rets = -ENODEV;
  29                         goto out;
  30                 }
  31         }
  32 --- a/drivers/misc/mei/main.c
  33 +++ b/drivers/misc/mei/main.c
  34 @@ -207,7 +207,7 @@ static ssize_t mei_read(struct file *fil
  35
  36                 mutex_lock(&dev->device_lock);
  37                 if (!mei_cl_is_connected(cl)) {
  38 -                       rets = -EBUSY;
  39 +                       rets = -ENODEV;
  40                         goto out;
  41                 }
  42         }