If fbdev uses a shadow framebuffer, call the damage handler. Otherwise the update might not make it to the screen.
v2: * mark virtual screen as dirty (Ville)
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Fixes: 222ec45f4c69 ("drm/fb_helper: Support framebuffers in I/O memory") Cc: Thomas Zimmermann tzimmermann@suse.de Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: Sam Ravnborg sam@ravnborg.org Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Maxime Ripard mripard@kernel.org Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: Gerd Hoffmann kraxel@redhat.com Cc: dri-devel@lists.freedesktop.org Cc: virtualization@lists.linux-foundation.org --- drivers/gpu/drm/drm_fb_helper.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 25edf670867c..9c673f33d222 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -2189,6 +2189,9 @@ static ssize_t drm_fbdev_fb_write(struct fb_info *info, const char __user *buf, if (ret > 0) *ppos += ret;
+ if (ret > 0) + drm_fb_helper_dirty(info, 0, 0, info->var.xres_virtual, info->var.yres_virtual); + return ret ? ret : err; }