linux-kernel - [PATCH 23/38] vt: synchronize types and use min in csi

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

Message-Id: <20200615074910.19267-23-jslaby@suse.cz>
Date:   Mon, 15 Jun 2020 09:48:55 +0200
From:   Jiri Slaby <jslaby@...e.cz>
To:     gregkh@...uxfoundation.org
Cc:     linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 23/38] vt: synchronize types and use min in csi_X

All the types are unsinged ints -- even the vpar passed to the function.
So unify them and use min() to compute count instead of explicit
comparison.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/tty/vt/vt.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 4686f8b9251d..b1fdbf119755 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -1582,13 +1582,15 @@ static void csi_K(struct vc_data *vc, int vpar)
 		do_update_region(vc, (unsigned long)(start + offset), count);
 }
 
-static void csi_X(struct vc_data *vc, int vpar) /* erase the following vpar positions */
+/* erase the following vpar positions */
+static void csi_X(struct vc_data *vc, unsigned int vpar)
 {					  /* not vt100? */
-	int count;
+	unsigned int count;
 
 	if (!vpar)
 		vpar++;
-	count = (vpar > vc->vc_cols - vc->state.x) ? (vc->vc_cols - vc->state.x) : vpar;
+
+	count = min(vpar, vc->vc_cols - vc->state.x);
 
 	vc_uniscr_clear_line(vc, vc->state.x, count);
 	scr_memsetw((unsigned short *)vc->vc_pos, vc->vc_video_erase_char, 2 * count);
-- 
2.27.0