linux-kernel - [PATCH 6/6] kconfig: remove redundant NULL pointer check before free()

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Message-Id: <20231203102528.1913822-6-masahiroy@kernel.org>
Date:   Sun,  3 Dec 2023 19:25:28 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 6/6] kconfig: remove redundant NULL pointer check before free()

Passing NULL to free() is allowed and is a no-op.

Remove redundant NULL pointer checks.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/kconfig/confdata.c | 3 +--
 scripts/kconfig/util.c     | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index bd14aae1db58..f1197e672431 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -432,8 +432,7 @@ int conf_read_simple(const char *name, int def)
 		case S_INT:
 		case S_HEX:
 		case S_STRING:
-			if (sym->def[def].val)
-				free(sym->def[def].val);
+			free(sym->def[def].val);
 			/* fall through */
 		default:
 			sym->def[def].val = NULL;
diff --git a/scripts/kconfig/util.c b/scripts/kconfig/util.c
index b78f114ad48c..92e5b2b9761d 100644
--- a/scripts/kconfig/util.c
+++ b/scripts/kconfig/util.c
@@ -42,8 +42,7 @@ struct gstr str_new(void)
 /* Free storage for growable string */
 void str_free(struct gstr *gs)
 {
-	if (gs->s)
-		free(gs->s);
+	free(gs->s);
 	gs->s = NULL;
 	gs->len = 0;
 }
-- 
2.40.1