diff options
Diffstat (limited to 'drivers/video/console/fbcon.c')
| -rw-r--r-- | drivers/video/console/fbcon.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/video/console/fbcon.c b/drivers/video/console/fbcon.c index e111a88612f7..5ff51cd0a2a9 100644 --- a/drivers/video/console/fbcon.c +++ b/drivers/video/console/fbcon.c @@ -630,6 +630,15 @@ static int con2fb_release_oldinfo(struct vc_data *vc, struct fb_info *oldinfo, kfree(oldinfo->fbcon_par); oldinfo->fbcon_par = NULL; module_put(oldinfo->fbops->owner); + /* + If oldinfo and newinfo are driving the same hardware, + the fb_release() method of oldinfo may attempt to + restore the hardware state. This will leave the + newinfo in an undefined state. Thus, a call to + fb_set_par() may be needed for the newinfo. + */ + if (newinfo->fbops->fb_set_par) + newinfo->fbops->fb_set_par(newinfo); } return err; |