linux-kernel - [PATCH 1/2] media: mediatek: vcodec: Fix encoder access NULL pointer

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Message-ID: <20230926101909.15030-1-irui.wang@mediatek.com>
Date:   Tue, 26 Sep 2023 18:19:08 +0800
From:   Irui Wang <irui.wang@...iatek.com>
To:     Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <angelogioacchino.delregno@...labora.com>,
        <nicolas.dufresne@...labora.com>,
        Yunfei Dong <yunfei.dong@...iatek.com>,
        Irui Wang <irui.wang@...iatek.com>
CC:     <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        Maoguang Meng <maoguang.meng@...iatek.com>
Subject: [PATCH 1/2] media: mediatek: vcodec: Fix encoder access NULL pointer

Need to set the private data with encoder device, or will access
NULL pointer in encoder handler.

Fixes: 1972e32431ed ("media: mediatek: vcodec: Fix possible invalid memory access for encoder")

Signed-off-by: Irui Wang <irui.wang@...iatek.com>
---
 drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c b/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
index d299cc2962a5..ae6290d28f8e 100644
--- a/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
+++ b/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
@@ -138,7 +138,8 @@ int vpu_enc_init(struct venc_vpu_inst *vpu)
 	vpu->ctx->vpu_inst = vpu;
 
 	status = mtk_vcodec_fw_ipi_register(vpu->ctx->dev->fw_handler, vpu->id,
-					    vpu_enc_ipi_handler, "venc", NULL);
+					    vpu_enc_ipi_handler, "venc",
+					    vpu->ctx->dev);
 
 	if (status) {
 		mtk_venc_err(vpu->ctx, "vpu_ipi_register fail %d", status);
-- 
2.25.1