dab5a44067
n As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
30 lines
1.1 KiB
Diff
30 lines
1.1 KiB
Diff
From 39d618a032d26655dfa62299034394e5d1ea7712 Mon Sep 17 00:00:00 2001
|
|
From: Mario Kleiner <mario.kleiner.de@gmail.com>
|
|
Date: Tue, 19 Jul 2016 20:58:59 +0200
|
|
Subject: [PATCH] drm/vc4: Reject doublescan modes.
|
|
|
|
We can't handle doublescan modes at the moment, so if
|
|
userspace tries to set one, reject the mode set.
|
|
|
|
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
|
|
Signed-off-by: Eric Anholt <eric@anholt.net>
|
|
---
|
|
drivers/gpu/drm/vc4/vc4_crtc.c | 7 +++++++
|
|
1 file changed, 7 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
|
|
@@ -542,6 +542,13 @@ static bool vc4_crtc_mode_fixup(struct d
|
|
const struct drm_display_mode *mode,
|
|
struct drm_display_mode *adjusted_mode)
|
|
{
|
|
+ /* Do not allow doublescan modes from user space */
|
|
+ if (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN) {
|
|
+ DRM_DEBUG_KMS("[CRTC:%d] Doublescan mode rejected.\n",
|
|
+ crtc->base.id);
|
|
+ return false;
|
|
+ }
|
|
+
|
|
/*
|
|
* Interlaced video modes got CRTC_INTERLACE_HALVE_V applied when
|
|
* coming from user space. We don't want this, as it screws up
|