From 2ab6e6ae9853e410310268efc0cea7f2276979ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Tue, 20 Oct 2020 17:12:42 +0200
Subject: [PATCH] sd-hwdb: allow empty properties

So far we didn't allow empty properties, but it makes sense to do so, for
example to distinguish empty data from lack of data. It also makes it easy to
override properties (back to the empty) value for specific cases.

(cherry picked from commit afe87974dd57741f74dd87165b251886f24c859f)

Related: #2005009
---
 src/hwdb/hwdb.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/hwdb/hwdb.c b/src/hwdb/hwdb.c
index 317cad8a67..af085cdb75 100644
--- a/src/hwdb/hwdb.c
+++ b/src/hwdb/hwdb.c
@@ -462,10 +462,9 @@ static int insert_data(struct trie *trie, char **match_list, char *line,
         while (isblank(line[0]) && isblank(line[1]))
                 line++;
 
-        if (isempty(line + 1) || isempty(value))
+        if (isempty(line + 1))
                 return log_syntax(NULL, LOG_WARNING, filename, line_number, EINVAL,
-                                  "Empty %s in \"%s=%s\", ignoring",
-                                  isempty(line + 1) ? "key" : "value",
+                                  "Empty key in \"%s=%s\", ignoring",
                                   line, value);
 
         STRV_FOREACH(entry, match_list)