[PATCH] rivafb: Trim rivafb_pan_display

Remove error checking and updating from rivafb_pan_display.  This is
guaranteed to be done by the core layer.

Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/video/riva/fbdev.c b/drivers/video/riva/fbdev.c
index dd7b2cc..6c19ab6 100644 (file)
--- a/drivers/video/riva/fbdev.c
+++ b/drivers/video/riva/fbdev.c
@@ -1209,32 +1209,8 @@ static int rivafb_pan_display(struct fb_var_screeninfo *var,
        unsigned int base;
 
        NVTRACE_ENTER();
-       if (var->xoffset > (var->xres_virtual - var->xres))
-               return -EINVAL;
-       if (var->yoffset > (var->yres_virtual - var->yres))
-               return -EINVAL;
-
-       if (var->vmode & FB_VMODE_YWRAP) {
-               if (var->yoffset < 0
-                   || var->yoffset >= info->var.yres_virtual
-                   || var->xoffset) return -EINVAL;
-       } else {
-               if (var->xoffset + info->var.xres > info->var.xres_virtual ||
-                   var->yoffset + info->var.yres > info->var.yres_virtual)
-                       return -EINVAL;
-       }
-
        base = var->yoffset * info->fix.line_length + var->xoffset;
-
        par->riva.SetStartAddress(&par->riva, base);
-
-       info->var.xoffset = var->xoffset;
-       info->var.yoffset = var->yoffset;
-
-       if (var->vmode & FB_VMODE_YWRAP)
-               info->var.vmode |= FB_VMODE_YWRAP;
-       else
-               info->var.vmode &= ~FB_VMODE_YWRAP;
        NVTRACE_LEAVE();
        return 0;
 }