mei: bus: Reset event_cb when disabling a device

After cancelling all reads from the disable hook, we need to reset the
event_cb pointer as well or else we won't be able to set a new one up
when re-enabling the device.

Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 1e935eacaa7faee9903e20303dc703c75ed014ff..9ecd49a7be1b33cac4ece186e35e3ebc255d9d78 100644 (file)
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -496,6 +496,8 @@ int mei_cl_disable_device(struct mei_cl_device *device)
                }
        }
 
+       device->event_cb = NULL;
+
        mutex_unlock(&dev->device_lock);
 
        if (!device->ops || !device->ops->disable)