From: Lucas Stach <l.stach@pengutronix.de>
To: Philipp Zabel <p.zabel@pengutronix.de>
Cc: kernel@pengutronix.de, dri-devel@lists.freedesktop.org,
patchwork-lst@pengutronix.de
Subject: [PATCH 1/5] drm/imx: disable outputs in lastclose when framebuffer emulation is disabled
Date: Fri, 17 Jun 2016 12:13:38 +0200 [thread overview]
Message-ID: <1466158422-12579-1-git-send-email-l.stach@pengutronix.de> (raw)
If there is no framebuffer mode that can be restored, all outputs should
be disabled in order to avoid information leaks.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
drivers/gpu/drm/imx/imx-drm-core.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 82656654fb21..c63378661e11 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -63,7 +63,19 @@ static void imx_drm_driver_lastclose(struct drm_device *drm)
{
struct imx_drm_device *imxdrm = drm->dev_private;
- drm_fbdev_cma_restore_mode(imxdrm->fbhelper);
+ if (imxdrm->fbhelper) {
+ drm_fbdev_cma_restore_mode(imxdrm->fbhelper);
+ } else {
+ struct drm_connector *connector;
+
+ /* no kernel mode to go back to, disable all outputs */
+ drm_modeset_lock_all(drm);
+ drm_for_each_connector(connector, drm)
+ connector->encoder = NULL;
+ drm_modeset_unlock_all(drm);
+
+ drm_helper_disable_unused_functions(drm);
+ }
}
static int imx_drm_driver_unload(struct drm_device *drm)
--
2.8.1
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next reply other threads:[~2016-06-17 10:13 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-17 10:13 Lucas Stach [this message]
2016-06-17 10:13 ` [PATCH 2/5] drm/imx: imx-ldb: check return code on panel attach Lucas Stach
2016-07-11 10:25 ` Philipp Zabel
2016-06-17 10:13 ` [PATCH 3/5] drm/imx: imx-ldb: detach panel on unbind Lucas Stach
2016-06-20 12:03 ` Philipp Zabel
2016-06-17 10:13 ` [PATCH 4/5] drm/imx: drop deprecated load/unload drm_driver ops Lucas Stach
2016-06-17 12:48 ` Daniel Vetter
2016-06-24 7:46 ` Ying Liu
2016-06-17 10:13 ` [PATCH 5/5] drm/imx: don't destroy mode objects manually on driver unbind Lucas Stach
2016-06-20 12:00 ` Philipp Zabel
2016-06-17 12:45 ` [PATCH 1/5] drm/imx: disable outputs in lastclose when framebuffer emulation is disabled Daniel Vetter
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