virtio_pci: document why we defer kfree

[pandora-kernel.git] / drivers / virtio / virtio_pci_legacy.c

diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index 4beaee3..a5486e6 100644 (file)
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -216,6 +216,9 @@ static void virtio_pci_release_dev(struct device *_d)
        struct virtio_device *vdev = dev_to_virtio(_d);
        struct virtio_pci_device *vp_dev = to_vp_device(vdev);
 
+       /* As struct device is a kobject, it's not safe to
+        * free the memory (including the reference counter itself)
+        * until it's release callback. */
        kfree(vp_dev);
 }