From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Abhinav Kumar , Sean Paul , Rob Clark , Sasha Levin Subject: [PATCH 4.9 35/61] drm/msm: Grab a vblank reference when waiting for commit_done Date: Thu, 20 Dec 2018 10:18:35 +0100 Message-Id: <20181220085845.163060980@linuxfoundation.org> In-Reply-To: <20181220085843.743900603@linuxfoundation.org> References: <20181220085843.743900603@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 3b712e43e3876b42b38321ecf790a1f5fe59c834 ] Similar to the atomic helpers, we should enable vblank while we're waiting for the commit to finish. DPU needs this, MDP5 seems to work fine without it. Reviewed-by: Abhinav Kumar Signed-off-by: Sean Paul Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/msm_atomic.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index 73bae382eac3..5c58a98f67c0 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -98,7 +98,12 @@ static void msm_atomic_wait_for_commit_done(struct drm_device *dev, if (old_state->legacy_cursor_update) continue; + if (drm_crtc_vblank_get(crtc)) + continue; + kms->funcs->wait_for_crtc_commit_done(kms, crtc); + + drm_crtc_vblank_put(crtc); } } -- 2.19.1