[PATCH] fbcon: fix complement_mask() with 512 character map

There is a bug in the complement_mask when you have a 512-character map.
Linux boots to a default 256-character map and most probably your login
profile is loading a 512-character map which results in a bad gpm cursor.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c
index bcea87c..c024ffd 100644 (file)
--- a/drivers/video/console/fbcon.c
+++ b/drivers/video/console/fbcon.c
@@ -2048,7 +2048,7 @@ static int fbcon_switch(struct vc_data *vc)
        struct fbcon_ops *ops;
        struct display *p = &fb_display[vc->vc_num];
        struct fb_var_screeninfo var;
-       int i, prev_console;
+       int i, prev_console, charcnt = 256;
 
        info = registered_fb[con2fb_map[vc->vc_num]];
        ops = info->fbcon_par;
@@ -2120,6 +2120,13 @@ static int fbcon_switch(struct vc_data *vc)
 
        vc->vc_can_do_color = (fb_get_color_depth(&info->var, &info->fix)!=1);
        vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;
+
+       if (p->userfont)
+               charcnt = FNTCHARCNT(vc->vc_font.data);
+
+       if (charcnt > 256)
+               vc->vc_complement_mask <<= 1;
+
        updatescrollmode(p, info, vc);
 
        switch (p->scrollmode) {