habanalabs: put devices before driver removal

Driver never puts its device and control_device objects, hence
a memory leak is introduced every driver removal.

Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 2057222..783bbdc 100644 (file)
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -231,16 +231,16 @@ delete_cdev_device:
 
 static void device_cdev_sysfs_del(struct hl_device *hdev)
 {
-       /* device_release() won't be called so must free devices explicitly */
-       if (!hdev->cdev_sysfs_created) {
-               kfree(hdev->dev_ctrl);
-               kfree(hdev->dev);
-               return;
-       }
+       if (!hdev->cdev_sysfs_created)
+               goto put_devices;
 
        hl_sysfs_fini(hdev);
        cdev_device_del(&hdev->cdev_ctrl, hdev->dev_ctrl);
        cdev_device_del(&hdev->cdev, hdev->dev);
+
+put_devices:
+       put_device(hdev->dev);
+       put_device(hdev->dev_ctrl);
 }
 
 /*
@@ -1371,9 +1371,9 @@ sw_fini:
 early_fini:
        device_early_fini(hdev);
 free_dev_ctrl:
-       kfree(hdev->dev_ctrl);
+       put_device(hdev->dev_ctrl);
 free_dev:
-       kfree(hdev->dev);
+       put_device(hdev->dev);
 out_disabled:
        hdev->disabled = true;
        if (add_cdev_sysfs_on_err)