linux-kernel - [PATCH 5.10 064/141] drm/mediatek: dsi: Add atomic {destroy,duplicate}

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

Date:   Mon, 26 Sep 2022 12:11:30 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Chen-Yu Tsai <wenst@...omium.org>,
        "=?UTF-8?q?N=C3=ADcolas=20F . =20R . =20A . =20Prado?=" 
        <nfraprado@...labora.com>, Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 064/141] drm/mediatek: dsi: Add atomic {destroy,duplicate}_state, reset callbacks

From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>

[ Upstream commit eeda05b5e92f51d9a09646ecb493f0a1e872a6ef ]

Add callbacks for atomic_destroy_state, atomic_duplicate_state and
atomic_reset to restore functionality of the DSI driver: this solves
vblank timeouts when another bridge is present in the chain.

Tested bridge chain: DSI <=> ANX7625 => aux-bus panel

Fixes: 7f6335c6a258 ("drm/mediatek: Modify dsi funcs to atomic operations")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Tested-by: Chen-Yu Tsai <wenst@...omium.org>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Tested-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20220721172727.14624-1-angelogioacchino.delregno@collabora.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/mediatek/mtk_dsi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c
index 7d37d2a01e3c..b8c1a3c1c517 100644
--- a/drivers/gpu/drm/mediatek/mtk_dsi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dsi.c
@@ -791,10 +791,13 @@ static void mtk_dsi_bridge_atomic_post_disable(struct drm_bridge *bridge,
 
 static const struct drm_bridge_funcs mtk_dsi_bridge_funcs = {
 	.attach = mtk_dsi_bridge_attach,
+	.atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
 	.atomic_disable = mtk_dsi_bridge_atomic_disable,
+	.atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
 	.atomic_enable = mtk_dsi_bridge_atomic_enable,
 	.atomic_pre_enable = mtk_dsi_bridge_atomic_pre_enable,
 	.atomic_post_disable = mtk_dsi_bridge_atomic_post_disable,
+	.atomic_reset = drm_atomic_helper_bridge_reset,
 	.mode_set = mtk_dsi_bridge_mode_set,
 };
 
-- 
2.35.1