diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/advantechwdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/advantechwdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/advantechwdt.c	Wed Aug  7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/advantechwdt.c	Wed Aug  7 15:40:06 2002
@@ -125,7 +125,10 @@
 			adv_expect_close = 0;
 
 			for (i = 0; i != count; i++) {
-				if (buf[i] == 'V')
+				char c;
+				if (get_user(c, buf + i))
+					return -EFAULT;
+				if (c == 'V')
 					adv_expect_close = 42;
 			}
 		}
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/alim7101_wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/alim7101_wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/alim7101_wdt.c	Wed Aug  7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/alim7101_wdt.c	Wed Aug  7 15:40:06 2002
@@ -174,9 +174,13 @@
 			wdt_expect_close = 0;
 
 			/* now scan */
-			for(ofs = 0; ofs != count; ofs++)
-				if(buf[ofs] == 'V')
+			for(ofs = 0; ofs != count; ofs++) {
+				char c;
+				if(get_user(c, buf + ofs))
+					return -EFAULT;
+				if(c == 'V')
 					wdt_expect_close = 1;
+			}
 		}
 
 		/* someone wrote to us, we should restart timer */
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/eurotechwdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/eurotechwdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/eurotechwdt.c	Wed Aug  7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/eurotechwdt.c	Wed Aug  7 15:40:06 2002
@@ -237,7 +237,10 @@
          eur_expect_close = 0;
 
          for (i = 0; i != count; i++) {
-            if (buf[i] == 'V')
+            char c;
+            if (get_user(c, buf + i))
+		    return -EFAULT;
+            if (c == 'V')
                eur_expect_close = 42;
          }
       }
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/machzwd.c linux-2.4.20-pre1-magicclose-fix/drivers/char/machzwd.c
--- linux-2.4.20-pre1-nowayout/drivers/char/machzwd.c	Wed Aug  7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/machzwd.c	Wed Aug  7 15:40:06 2002
@@ -329,7 +329,10 @@
 	
 			/* now scan */
 			for(ofs = 0; ofs != count; ofs++){
-				if(buf[ofs] == 'V'){
+				char c;
+				if(get_user(c, buf + ofs))
+					return -EFAULT;
+				if(c == 'V'){
 					zf_expect_close = 1;
 					dprintk("zf_expect_close 1\n");
 				}
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/sc1200wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/sc1200wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/sc1200wdt.c	Wed Aug  7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/sc1200wdt.c	Wed Aug  7 15:40:06 2002
@@ -263,7 +263,10 @@
 
 			for (i = 0; i != len; i++)
 			{
-				if (data[i] == 'V')
+				char c;
+				if (get_user(c, data + i))
+					return -EFAULT;
+				if (c == 'V')
 					expect_close = 42;
 			}
 		}
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/sc520_wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/sc520_wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/sc520_wdt.c	Wed Aug  7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/sc520_wdt.c	Wed Aug  7 15:40:06 2002
@@ -210,9 +210,13 @@
 		wdt_expect_close = 0;
 
 		/* now scan */
-		for(ofs = 0; ofs != count; ofs++) 
-			if(buf[ofs] == 'V')
+		for(ofs = 0; ofs != count; ofs++) {
+			char c;
+			if (get_user(c, buf + ofs))
+				return -EFAULT;
+			if(c == 'V')
 				wdt_expect_close = 1;
+		}
 
 		/* Well, anyhow someone wrote to us, we should return that favour */
 		next_heartbeat = jiffies + WDT_HEARTBEAT;
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/shwdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/shwdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/shwdt.c	Fri Aug  2 17:39:43 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/shwdt.c	Wed Aug  7 15:40:06 2002
@@ -237,7 +237,10 @@
 		shwdt_expect_close = 0;
 
 		for (i = 0; i != count; i++) {
-			if (buf[i] == 'V')
+			char c;
+			if (get_user(c, buf + i))
+				return -EFAULT;
+			if (c == 'V')
 				shwdt_expect_close = 42;
 		}
 		next_heartbeat = jiffies + (sh_heartbeat * HZ);
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/w83877f_wdt.c linux-2.4.20-pre1-magicclose-fix/drivers/char/w83877f_wdt.c
--- linux-2.4.20-pre1-nowayout/drivers/char/w83877f_wdt.c	Fri Aug  2 17:39:43 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/w83877f_wdt.c	Wed Aug  7 15:40:06 2002
@@ -192,8 +192,13 @@
 
 		/* now scan */
 		for(ofs = 0; ofs != count; ofs++)
-			if(buf[ofs] == 'V')
+		{
+			char c;
+			if(get_user(c, buf + ofs))
+				return -EFAULT;
+			if(c == 'V')
 				wdt_expect_close = 1;
+		}
 
 		/* someone wrote to us, we should restart timer */
 		next_heartbeat = jiffies + WDT_HEARTBEAT;
diff -uNr linux-2.4.20-pre1-nowayout/drivers/char/wdt_pci.c linux-2.4.20-pre1-magicclose-fix/drivers/char/wdt_pci.c
--- linux-2.4.20-pre1-nowayout/drivers/char/wdt_pci.c	Wed Aug  7 15:30:18 2002
+++ linux-2.4.20-pre1-magicclose-fix/drivers/char/wdt_pci.c	Wed Aug  7 15:40:06 2002
@@ -247,7 +247,10 @@
 			expect_close = 0;
 
 			for (i = 0; i != count; i++) {
-				if (buf[i] == 'V')
+				char c;
+				if (get_user(c, buf + i))
+					return -EFAULT;
+				if (c == 'V')
 					expect_close = 1;
 			}
 		}