From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47698 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753263AbeCPOrM (ORCPT ); Fri, 16 Mar 2018 10:47:12 -0400 Subject: Patch "media: vsp1: Prevent suspending and resuming DRM pipelines" has been added to the 4.14-stable tree To: kieran.bingham+renesas@ideasonboard.com, alexander.levin@microsoft.com, gregkh@linuxfoundation.org, hans.verkuil@cisco.com, laurent.pinchart+renesas@ideasonboard.com, mchehab@s-opensource.com Cc: , From: Date: Fri, 16 Mar 2018 15:46:06 +0100 Message-ID: <152121156615233@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled media: vsp1: Prevent suspending and resuming DRM pipelines to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: media-vsp1-prevent-suspending-and-resuming-drm-pipelines.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Fri Mar 16 15:43:17 CET 2018 From: Kieran Bingham Date: Mon, 4 Dec 2017 06:01:11 -0500 Subject: media: vsp1: Prevent suspending and resuming DRM pipelines From: Kieran Bingham [ Upstream commit a17d2d6cd9985ca09a9e384f1bc71d710f7e5203 ] When used as part of a display pipeline, the VSP is stopped and restarted explicitly by the DU from its suspend and resume handlers. There is thus no need to stop or restart pipelines in the VSP suspend and resume handlers, and doing so would cause the hardware to be left in a misconfigured state. Ensure that the VSP suspend and resume handlers do not affect DRM-based pipelines. Signed-off-by: Kieran Bingham Reviewed-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/media/platform/vsp1/vsp1_drv.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -571,7 +571,13 @@ static int __maybe_unused vsp1_pm_suspen { struct vsp1_device *vsp1 = dev_get_drvdata(dev); - vsp1_pipelines_suspend(vsp1); + /* + * When used as part of a display pipeline, the VSP is stopped and + * restarted explicitly by the DU. + */ + if (!vsp1->drm) + vsp1_pipelines_suspend(vsp1); + pm_runtime_force_suspend(vsp1->dev); return 0; @@ -582,7 +588,13 @@ static int __maybe_unused vsp1_pm_resume struct vsp1_device *vsp1 = dev_get_drvdata(dev); pm_runtime_force_resume(vsp1->dev); - vsp1_pipelines_resume(vsp1); + + /* + * When used as part of a display pipeline, the VSP is stopped and + * restarted explicitly by the DU. + */ + if (!vsp1->drm) + vsp1_pipelines_resume(vsp1); return 0; } Patches currently in stable-queue which might be from kieran.bingham+renesas@ideasonboard.com are queue-4.14/media-vsp1-prevent-suspending-and-resuming-drm-pipelines.patch