From: Pali Rohár <pali@kernel.org>
Date: Sat, 5 Mar 2022 23:22:54 +0000 (+0100)
Subject: lspci: Fix detection of extended capabilities
X-Git-Tag: v3.8.0~8
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=861063f33eda73455532d71a55987556dc98448e;p=pciutils.git

lspci: Fix detection of extended capabilities

Bus may report all-ones when trying to access non-existent extended space.
Same check is also in lib/caps.c extended space parser.
---

diff --git a/ls-ecaps.c b/ls-ecaps.c
index 15c57a8..32a2cbc 100644
--- a/ls-ecaps.c
+++ b/ls-ecaps.c
@@ -1041,7 +1041,7 @@ show_ext_caps(struct device *d, int type)
       if (!config_fetch(d, where, 4))
 	break;
       header = get_conf_long(d, where);
-      if (!header)
+      if (!header || header == 0xffffffff)
 	break;
       id = header & 0xffff;
       version = (header >> 16) & 0xf;