[PATCH] Xfbdev: ensure correct yoffset

[Risto Suominen]

If virtual resolution is higher than the screen (as in atyfb), and yoffset
given by the framebuffer driver happens to be non-zero (fbcon changes it on-
the-fly), Xfbdev places its image starting above the displayed part of the
framebuffer. This patch makes sure that the whole picture is visible.

Signed-off-by: Risto Suominen <Risto.Suominen at gmail.com>
---
The testing is done on version 1.1.1 and linux kernel version 2.6.18.

--- a/hw/kdrive/fbdev/fbdev.c.org       2006-07-05 21:31:39.000000000 +0300
+++ b/hw/kdrive/fbdev/fbdev.c   2009-01-18 15:42:06.000000000 +0200
@@ -215,6 +215,8 @@ fbdevScreenInitialize (KdScreenInfo *scr

    /* Now get the new screeninfo */
    ioctl (priv->fd, FBIOGET_VSCREENINFO, &priv->var);
+    /* We can get anything into yoffset if fbcon is active */
+    priv->var.yoffset = 0;
    depth = priv->var.bits_per_pixel;
    gray = priv->var.grayscale;
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