1 files changed, 15 insertions, 2 deletions

diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
index 62e85a3b2234..3ff8806ca584 100644
--- a/drivers/media/dvb-frontends/rtl2832_sdr.c
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -1310,10 +1310,21 @@ static int rtl2832_sdr_probe(struct platform_device *pdev)
                 ret = -EINVAL;
                 goto err;
         }
+        if (!pdev->dev.parent->driver) {
+                dev_dbg(&pdev->dev, "No parent device\n");
+                ret = -EINVAL;
+                goto err;
+        }
+        /* try to refcount host drv since we are the consumer */
+        if (!try_module_get(pdev->dev.parent->driver->owner)) {
+                dev_err(&pdev->dev, "Refcount fail");
+                ret = -EINVAL;
+                goto err;
+        }
         dev = kzalloc(sizeof(*dev), GFP_KERNEL);
         if (dev == NULL) {
                 ret = -ENOMEM;
-                goto err;
+                goto err_module_put;
         }
 
         /* setup the state */
@@ -1426,6 +1437,8 @@ err_v4l2_ctrl_handler_free:
         v4l2_ctrl_handler_free(&dev->hdl);
 err_kfree:
         kfree(dev);
+err_module_put:
+        module_put(pdev->dev.parent->driver->owner);
 err:
         return ret;
 }
@@ -1444,8 +1457,8 @@ static int rtl2832_sdr_remove(struct platform_device *pdev)
         video_unregister_device(&dev->vdev);
         mutex_unlock(&dev->v4l2_lock);
         mutex_unlock(&dev->vb_queue_lock);
-
         v4l2_device_put(&dev->v4l2_dev);
+        module_put(pdev->dev.parent->driver->owner);
 
         return 0;
 }