linux-kernel - [PATCH] fbcon: break earlier in search_fb_in_map and search_for_mapped

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240926115911.620624-1-qianqiang.liu@163.com>
Date: Thu, 26 Sep 2024 19:59:11 +0800
From: Qianqiang Liu <qianqiang.liu@....com>
To: deller@....de
Cc: linux-fbdev@...r.kernel.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org,
	Qianqiang Liu <qianqiang.liu@....com>
Subject: [PATCH] fbcon: break earlier in search_fb_in_map and search_for_mapped_con

Break the for loop immediately upon finding the target, making the
process more efficient.

Signed-off-by: Qianqiang Liu <qianqiang.liu@....com>
---
 drivers/video/fbdev/core/fbcon.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index d9abae2516d8..e8b4e8c119b5 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -512,8 +512,10 @@ static int search_fb_in_map(int idx)
 	int i, retval = 0;
 
 	for (i = first_fb_vc; i <= last_fb_vc; i++) {
-		if (con2fb_map[i] == idx)
+		if (con2fb_map[i] == idx) {
 			retval = 1;
+			break;
+		}
 	}
 	return retval;
 }
@@ -523,8 +525,10 @@ static int search_for_mapped_con(void)
 	int i, retval = 0;
 
 	for (i = first_fb_vc; i <= last_fb_vc; i++) {
-		if (con2fb_map[i] != -1)
+		if (con2fb_map[i] != -1) {
 			retval = 1;
+			break;
+		}
 	}
 	return retval;
 }
-- 
2.34.1