From ea294fff0cf73a73dec2ac395f6206b3a37a0f18 Mon Sep 17 00:00:00 2001
From: Christian Helmuth <christian.helmuth@genode-labs.com>
Date: Mon, 26 Jun 2023 11:55:23 +0200
Subject: [PATCH] lx_emul: fix unplug of unclaimed USB devices

USB devices that are never associated to client sessions lack
usb_per_dev_data (and a kernel thread). Therefore, the devices should be
discontinued directly on unplug as no URBs can be pending.

Issue genodelabs/genode#4795
---
 repos/dde_linux/src/lib/lx_emul/usb.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/repos/dde_linux/src/lib/lx_emul/usb.c b/repos/dde_linux/src/lib/lx_emul/usb.c
index ce253594e4..9baf549220 100644
--- a/repos/dde_linux/src/lib/lx_emul/usb.c
+++ b/repos/dde_linux/src/lib/lx_emul/usb.c
@@ -800,6 +800,9 @@ static int raw_notify(struct notifier_block *nb, unsigned long action, void *dat
 			if (data) {
 				data->dev = NULL;
 				lx_emul_task_unblock(data->task);
+			} else {
+				/* discontinue unclaimed device */
+				genode_usb_discontinue_device(udev->bus->busnum, udev->devnum);
 			}
 			break;
 		}