linux-kernel - [PATCH 0/5] media: mediatek: vcodec: Fix power

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Date:   Sat, 10 Dec 2022 15:32:13 +0800
From:   Yunfei Dong <yunfei.dong@...iatek.com>
To:     Yunfei Dong <yunfei.dong@...iatek.com>,
        Chen-Yu Tsai <wenst@...omium.org>,
        Nicolas Dufresne <nicolas@...fresne.ca>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        Tiffany Lin <tiffany.lin@...iatek.com>
CC:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hsin-Yi Wang <hsinyi@...omium.org>,
        Fritz Koenig <frkoenig@...omium.org>,
        Daniel Vetter <daniel@...ll.ch>,
        Steve Cho <stevecho@...omium.org>,
        <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>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH 0/5] media: mediatek: vcodec: Fix power_VideoCall test fail

Random getting below error message when test power_VideoCall/control.49_vp9:
pc : __list_del_entry_valid+0xb0/0xfc
lr : __list_del_entry_valid+0xac/0xfc
sp : ffffffc020f23ce0

The lat_buf in core list won't be deleted when one instance decode done.
Will access invalid released lat_buf list when queue work continue to decode.
Firstly, remove all unused lat_buf to the top of core list, making sure
these buffers can be decoded in highest priority; lastly, remove all unused
lat_buf when the instance is freed.

patch 1 add params to record lat and core lat_buf count.
patch 2 using each instance lat_buf count replace core ready list.
patch 3 move lat_buf to the top of core list.
patch 4 add core decode done event.
patch 5 remove unused lat_buf.
---
Yunfei Dong (5):
  media: mediatek: vcodec: add params to record lat and core lat_buf
    count
  media: mediatek: vcodec: using each instance lat_buf count replace
    core ready list
  media: mediatek: vcodec: move lat_buf to the top of core list
  media: mediatek: vcodec: add core decode done event
  media: mediatek: vcodec: remove unused lat_buf

 .../platform/mediatek/vcodec/vdec_msg_queue.c | 74 +++++++++++++++++--
 .../platform/mediatek/vcodec/vdec_msg_queue.h | 13 ++++
 2 files changed, 81 insertions(+), 6 deletions(-)

-- 
2.18.0