diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2015-06-18 11:41:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-07-22 21:31:05 -0700 |
| commit | 154322f47376fed6ab1e4b350aa45fffa15a61aa (patch) | |
| tree | e89be0738fb519dc975b6403804d8ed1a2bbc7f0 /drivers/misc/mei/main.c | |
| parent | a63444375f08a18a6b2286351606f08d6e9fa63d (diff) | |
mei: prevent unloading mei hw modules while the device is opened.
chrdev_open() increases reference counter on cdev->owner. Instead of
assigning the owner to mei subsystem, the owner has to be set to the
underlaying HW module (mei_me or mei_txe), so once the device is opened
the HW module cannot be unloaded.
Cc: <stable@vger.kernel.org> #3.17+
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>
Diffstat (limited to 'drivers/misc/mei/main.c')
| -rw-r--r-- | drivers/misc/mei/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c index 8eb0a9500a90..e9513d651cd3 100644 --- a/drivers/misc/mei/main.c +++ b/drivers/misc/mei/main.c @@ -682,7 +682,7 @@ int mei_register(struct mei_device *dev, struct device *parent) /* Fill in the data structures */ devno = MKDEV(MAJOR(mei_devt), dev->minor); cdev_init(&dev->cdev, &mei_fops); - dev->cdev.owner = mei_fops.owner; + dev->cdev.owner = parent->driver->owner; /* Add the device */ ret = cdev_add(&dev->cdev, devno, 1); |