linux-kernel - [PATCH 01/16] kconfig: remove unneeded code in expr_compare

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Message-ID: <20240611175536.3518179-2-masahiroy@kernel.org>
Date: Wed, 12 Jun 2024 02:55:10 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH 01/16] kconfig: remove unneeded code in expr_compare_type()

The condition (t2 == 0) never becomes true because the zero value
(i.e., E_NONE) is only used as a dummy type for prevtoken. It can
be passed to t1, but not to t2.

The caller of this function only checks expr_compare_type() > 0.
Therefore, the distinction between 0 and -1 is unnecessary.

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

 scripts/kconfig/expr.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/scripts/kconfig/expr.c b/scripts/kconfig/expr.c
index fcc190b67b6f..31737b2cb8e2 100644
--- a/scripts/kconfig/expr.c
+++ b/scripts/kconfig/expr.c
@@ -1096,11 +1096,8 @@ static int expr_compare_type(enum expr_type t1, enum expr_type t2)
 	case E_OR:
 		if (t2 == E_LIST)
 			return 1;
-	case E_LIST:
-		if (t2 == 0)
-			return 1;
 	default:
-		return -1;
+		break;
 	}
 	return 0;
 }
-- 
2.43.0