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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2020-11-20 11:25:36 +0100 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2020-11-24 09:19:40 +0100 |
| commit | a102172c7f818bfb32c0652552983e262d11990e (patch) | |
| tree | 35c0c93ccfa213f013fb3a81cd0560c312cab41a /drivers/gpu | |
| parent | 2f04636f496d723f4ab685d44aad12c257e832c6 (diff) | |
| download | lwn-a102172c7f818bfb32c0652552983e262d11990e.tar.gz lwn-a102172c7f818bfb32c0652552983e262d11990e.zip | |
drm/fb-helper: Call dirty helper after writing to fbdev
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")
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
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
Link: https://patchwork.freedesktop.org/patch/msgid/20201120102545.4047-2-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 3 |
1 files changed, 3 insertions, 0 deletions
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; } |