patch-2.4.22 linux-2.4.22/drivers/video/fbcon.c

• Lines: 50
• Date: 2003-08-25 04:44:42.000000000 -0700
• Orig file: linux-2.4.21/drivers/video/fbcon.c
• Orig date: 2002-11-28 15:53:15.000000000 -0800

diff -urN linux-2.4.21/drivers/video/fbcon.c linux-2.4.22/drivers/video/fbcon.c
@@ -266,23 +266,22 @@
 int PROC_CONSOLE(const struct fb_info *info)
 {
         int fgc;
-        
-        if (info->display_fg != NULL)
-                fgc = info->display_fg->vc_num;
-        else
-                return -1;
-                
-        if (!current->tty)
-                return fgc;
-
-        if (current->tty->driver.type != TTY_DRIVER_TYPE_CONSOLE)
-                /* XXX Should report error here? */
-                return fgc;
 
-        if (MINOR(current->tty->device) < 1)
-                return fgc;
+	if (info->display_fg == NULL)
+		return -1;
 
-        return MINOR(current->tty->device) - 1;
+        if (!current->tty ||
+	    current->tty->driver.type != TTY_DRIVER_TYPE_CONSOLE ||
+	    MINOR(current->tty->device) < 1)
+		fgc = info->display_fg->vc_num;
+	else
+		fgc = MINOR(current->tty->device)-1;
+
+	/* Does this virtual console belong to the specified fbdev? */
+	if (fb_display[fgc].fb_info != info)
+		return -1;
+
+	return fgc;
 }
 
 
@@ -919,8 +918,9 @@
 	return;
 
     cursor_on = 0;
-    if (cursor_drawn)
-        p->dispsw->revc(p, p->cursor_x, real_y(p, p->cursor_y));
+    if (cursor_drawn && p->cursor_x < conp->vc_cols &&
+	p->cursor_y < conp->vc_rows)
+	p->dispsw->revc(p, p->cursor_x, real_y(p, p->cursor_y));
 
     p->cursor_x = conp->vc_x;
     p->cursor_y = y;