From fc8d547642808be3aee9a9a01cf1c85add2460b3 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@amutable.com>
Date: Tue, 5 May 2026 12:43:42 +0200
Subject: [PATCH] udev-builtin-tpm2-id: gracefully skip tpm2 identification if
 tss2-libs are not installed

Fixes: #41714
---
 src/udev/udev-builtin-tpm2_id.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/udev/udev-builtin-tpm2_id.c b/src/udev/udev-builtin-tpm2_id.c
index 6edf618e11..968677a734 100644
--- a/src/udev/udev-builtin-tpm2_id.c
+++ b/src/udev/udev-builtin-tpm2_id.c
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 
 #include "device-util.h"
+#include "errno-util.h"
 #include "string-util.h"
 #include "tpm2-util.h"
 #include "udev-builtin.h"
@@ -20,6 +21,10 @@ static int builtin_tpm2_id(UdevEvent *event, int argc, char *argv[]) {
 
         _cleanup_(tpm2_context_unrefp) Tpm2Context *c = NULL;
         r = tpm2_context_new(dn, &c);
+        if (ERRNO_IS_NEG_NOT_SUPPORTED(r)) {
+                log_device_debug_errno(dev, r, "Full TPM2 support is not available, skipping identification of TPM2 device '%s'.", dn);
+                return 0;
+        }
         if (r < 0)
                 return log_device_error_errno(dev, r, "Failed to open device node '%s': %m", dn);