lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210916155811.260441206@linuxfoundation.org>
Date:   Thu, 16 Sep 2021 17:59:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.13 211/380] drm: rcar-du: Shutdown the display on system shutdown

From: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>

[ Upstream commit 015f2ebb93767d40c442e749642fffaf10316d78 ]

When the system shuts down or warm reboots, the display may be active,
with the hardware accessing system memory. Upon reboot, the DDR will not
be accessible, which may cause issues.

Implement the platform_driver .shutdown() operation and shut down the
display to fix this.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index c22551c2facb..2a06ec1cbefb 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -559,6 +559,13 @@ static int rcar_du_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void rcar_du_shutdown(struct platform_device *pdev)
+{
+	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
+
+	drm_atomic_helper_shutdown(&rcdu->ddev);
+}
+
 static int rcar_du_probe(struct platform_device *pdev)
 {
 	struct rcar_du_device *rcdu;
@@ -615,6 +622,7 @@ static int rcar_du_probe(struct platform_device *pdev)
 static struct platform_driver rcar_du_platform_driver = {
 	.probe		= rcar_du_probe,
 	.remove		= rcar_du_remove,
+	.shutdown	= rcar_du_shutdown,
 	.driver		= {
 		.name	= "rcar-du",
 		.pm	= &rcar_du_pm_ops,
-- 
2.30.2



Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ