linux-kernel - [PATCH] drm: mali-dp: Disable planes when their CRTC gets disabled.

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-next>] [day] [month] [year] [list]

Message-Id: <20171101141326.3112-1-Liviu.Dudau@arm.com>
Date:   Wed,  1 Nov 2017 14:13:26 +0000
From:   Liviu Dudau <Liviu.Dudau@....com>
To:     Brian Starkey <brian.starkey@....com>
Cc:     Mali DP Maintainers <malidp@...s.arm.com>,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        DRI-devel <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Liviu Dudau <liviu.dudau@....com>
Subject: [PATCH] drm: mali-dp: Disable planes when their CRTC gets disabled.

Make sure only the planes on the active CRTCs get committed and
that all planes on the disabled CRTCs get turned off.

Reviewed-by: Brian Starkey <brian.starkey@....com>
Signed-off-by: Liviu Dudau <liviu.dudau@....com>
---
 drivers/gpu/drm/arm/malidp_crtc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c
index 153a496706262..904fff80917ba 100644
--- a/drivers/gpu/drm/arm/malidp_crtc.c
+++ b/drivers/gpu/drm/arm/malidp_crtc.c
@@ -77,6 +77,9 @@ static void malidp_crtc_atomic_disable(struct drm_crtc *crtc,
 	struct malidp_hw_device *hwdev = malidp->dev;
 	int err;
 
+	/* always disable planes on the CRTC that is being turned off */
+	drm_atomic_helper_disable_planes_on_crtc(old_state, false);
+
 	drm_crtc_vblank_off(crtc);
 	hwdev->hw->enter_config_mode(hwdev);
 
-- 
2.14.3