This is a note to let you know that I've just added the patch titled
drm/radeon: make sure vertical front porch is at least 1
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-make-sure-vertical-front-porch-is-at-least-1.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3104b8128d4d646a574ed9d5b17c7d10752cd70b Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Mon, 2 May 2016 18:53:27 -0400
Subject: drm/radeon: make sure vertical front porch is at least 1
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 3104b8128d4d646a574ed9d5b17c7d10752cd70b upstream.
hw doesn't like a 0 value.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/atombios_encoders.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -310,6 +310,10 @@ static bool radeon_atom_mode_fixup(struc
&& (mode->crtc_vsync_start < (mode->crtc_vdisplay + 2)))
adjusted_mode->crtc_vsync_start = adjusted_mode->crtc_vdisplay + 2;
+ /* vertical FP must be at least 1 */
+ if (mode->crtc_vsync_start == mode->crtc_vdisplay)
+ adjusted_mode->crtc_vsync_start++;
+
/* get the native mode for scaling */
if (radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT)) {
radeon_panel_mode_fixup(encoder, adjusted_mode);
Patches currently in stable-queue which might be from alexander.deucher@xxxxxxx are
queue-4.4/drm-radeon-make-sure-vertical-front-porch-is-at-least-1.patch
queue-4.4/drm-amdgpu-set-metadata-pointer-to-null-after-freeing.patch
queue-4.4/drm-amdgpu-make-sure-vertical-front-porch-is-at-least-1.patch
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