diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0517-drm-vc4-Reject-doublescan-modes.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0517-drm-vc4-Reject-doublescan-modes.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0517-drm-vc4-Reject-doublescan-modes.patch b/target/linux/brcm2708/patches-4.4/0517-drm-vc4-Reject-doublescan-modes.patch new file mode 100644 index 0000000000..79d0d39780 --- /dev/null +++ b/target/linux/brcm2708/patches-4.4/0517-drm-vc4-Reject-doublescan-modes.patch @@ -0,0 +1,30 @@ +From 30f69de2c6e1dedc4d071a24a0690e81118421d9 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 |