linux-kernel - [PATCH 14/16] dyndbg: prefer declarative init in caller, to memset in callee

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Date:   Fri,  5 Jun 2020 10:26:43 -0600
From:   Jim Cromie <jim.cromie@...il.com>
To:     jbaron@...mai.com, linux-kernel@...r.kernel.org,
        akpm@...uxfoundation.org, gregkh@...uxfoundation.org
Cc:     linux@...musvillemoes.dk, Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH 14/16] dyndbg: prefer declarative init in caller, to memset in callee

drop memset in ddebug_parse_query, instead initialize the stack
variable in the caller; let the compiler decide how to do it.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
 lib/dynamic_debug.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 90061833ef3f..f0c0c31e91ea 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -372,7 +372,6 @@ static int ddebug_parse_query(char *words[], int nwords,
 		pr_err("expecting pairs of match-spec <value>\n");
 		return -EINVAL;
 	}
-	memset(query, 0, sizeof(*query));
 
 	if (modname)
 		/* support $modname.dyndbg=<multiple queries> */
@@ -493,7 +492,7 @@ static int ddebug_exec_query(char *query_string, const char *modname)
 {
 	struct flagsettings mods = {};
 	struct flagsettings filter = {};
-	struct ddebug_query query;
+	struct ddebug_query query = {};
 #define MAXWORDS 9
 	int nwords, nfound;
 	char *words[MAXWORDS];
-- 
2.26.2