From: kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk>
Date: Thu, 13 Apr 2006 10:25:03 +0000 (+0100)
Subject: Use memmove instead of memcpy for overlapping areas (console scroll).
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~16158^2~2^2~27
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=9d66d09ba2000d3b9c81fd60eb8e8feb152263e1;p=xen.git

Use memmove instead of memcpy for overlapping areas (console scroll).
Use memset instead of memcpy to clear line.

Signed-off-by: Tristan Gingold <tristan.gingold@bull.net>
---

diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c
index 948000c743..41ce2b6009 100644
--- a/xen/drivers/char/console.c
+++ b/xen/drivers/char/console.c
@@ -180,12 +180,10 @@ static void put_newline(void)
 
     if (ypos >= LINES)
     {
-        static char zeroarr[2*COLUMNS] = { 0 };
         ypos = LINES-1;
-        memcpy((char*)video, 
-               (char*)video + 2*COLUMNS, (LINES-1)*2*COLUMNS);
-        memcpy((char*)video + (LINES-1)*2*COLUMNS, 
-               zeroarr, 2*COLUMNS);
+        memmove((char*)video, 
+                (char*)video + 2*COLUMNS, (LINES-1)*2*COLUMNS);
+        memset((char*)video + (LINES-1)*2*COLUMNS, 0, 2*COLUMNS);
     }
 }