[PATCH v2] drm/meson: Fix atomic mode switching regression

[Greg KH]

On Mon, Jan 28, 2019 at 05:21:12PM +0100, Neil Armstrong wrote:
> Hi Stable kernel team,
> 
> On 14/01/2019 16:31, Neil Armstrong wrote:
> > Since commit 2bcd3ecab773 when switching mode from X11 (ubuntu mate for
> > example) the display gets blurry, looking like an invalid framebuffer width.
> > 
> > This commit fixed atomic crtc modesetting in a totally wrong way and
> > introduced a local unnecessary ->enabled crtc state.
> > 
> > This commit reverts the crctc _begin() and _enable() changes and simply
> > adds drm_atomic_helper_commit_tail_rpm as helper.
> > 
> > Reported-by: Tony McKahan <tonymckahan at gmail.com>
> > Suggested-by: Daniel Vetter <daniel at ffwll.ch>
> > Fixes: 2bcd3ecab773 ("drm/meson: Fixes for drm_crtc_vblank_on/off support")
> > Signed-off-by: Neil Armstrong <narmstrong at baylibre.com>
> 
> This fix has landed in linus master with id ce0210c12433031aba3bbacd75f4c02ab77f2004
> 
> could it be applied to 4.19 and 4.20 stable trees ?

Now queued up, thanks.

greg k-h