From fca15ebf995bcc8e00263619c0e366384f94881c Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Tue, 25 Jan 2022 16:23:45 +0100
Subject: [PATCH] osmo_libusb: Fix NULL check in osmo_usb_removed_cb()

Thread 1 "simtrace2-tool" received signal SIGSEGV, Segmentation fault.
0x00007ffff73dd2a0 in llist_del (entry=0x0) at ../include/osmocom/core/linuxlist.h:130
130             __llist_del(entry->prev, entry->next);
(gdb) bt

Change-Id: I2b7ab8dddd69453826053663dd5589a941c2e47d
---
 src/usb/osmo_libusb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/usb/osmo_libusb.c b/src/usb/osmo_libusb.c
index 05331a1c4..a6f194adb 100644
--- a/src/usb/osmo_libusb.c
+++ b/src/usb/osmo_libusb.c
@@ -99,7 +99,7 @@ static void osmo_usb_added_cb(int fd, short events, void *user_data)
 static void osmo_usb_removed_cb(int fd, void *user_data)
 {
 	struct osmo_fd *ofd = osmo_fd_get_by_fd(fd);
-	if (!fd)
+	if (!ofd)
 		return;
 	osmo_fd_unregister(ofd);
 	talloc_free(ofd);