linux-kernel - Re: [PATCH v2 0/4] Improvement around mtk_vcodec_mem

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Date: Wed, 27 Mar 2024 10:57:22 +0100
From: Sebastian Fricke <sebastian.fricke@...labora.com>
To: Fei Shao <fshao@...omium.org>
Cc: Hans Verkuil <hverkuil-cisco@...all.nl>,
	Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	Nicolas Dufresne <nicolas.dufresne@...labora.com>,
	Tiffany Lin <tiffany.lin@...iatek.com>,
	Xiaoyong Lu <xiaoyong.lu@...iatek.com>,
	Yunfei Dong <yunfei.dong@...iatek.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-media@...r.kernel.org, linux-mediatek@...ts.infradead.org,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v2 0/4] Improvement around mtk_vcodec_mem_free() logging
 and usage

Hey Fei,

On 27.03.2024 17:18, Fei Shao wrote:
>On Thu, Dec 21, 2023 at 5:23 PM Fei Shao <fshao@...omium.org> wrote:
>>
>> Hi,
>>
>> This series includes some improvements around mtk_vcodec_mem_free() in
>> mtk_vcodec_util.c.
>>
>> I noticed that mtk_vcodec_mem_free() generates a spurious error if the
>> target DMA buffer has been freed previously:
>>   mtk_vcodec_mem_free(),69: [MTK_V4L2][ERROR] 18000000.video-codec
>>   dma_free size=0 failed!
>>
>> The warning is harmless, but it brings some confusion to our developers
>> and testing infra, so I sent this series to fix that with some minor
>> improvement for the driver alongside.
>>
>> The first two patches are for aesthetic and style improvements, the
>> third tries to make the error logs more informative, and the last adds
>> back the missing checks when calling the free function.
>>
>> Regards,
>> Fei
>>
>> v1: https://lore.kernel.org/all/20231113123049.4117280-1-fshao@chromium.org/
>>
>> Changes in v2:
>> - rebased on top of next-20231219
>> - revise commit message for clearer intention and rationale
>> - update the error messages based on the suggestion
>>
>> Fei Shao (4):
>>   media: mediatek: vcodec: Replace dev_name in error string
>>   media: mediatek: vcodec: Drop unnecessary variable
>>   media: mediatek: vcodec: Update mtk_vcodec_mem_free() error messages
>>   media: mediatek: vcodec: Only free buffer VA that is not NULL
>>
>>  .../mediatek/vcodec/common/mtk_vcodec_util.c  | 23 +++++++++----------
>>  .../vcodec/decoder/vdec/vdec_av1_req_lat_if.c | 22 ++++++++++++------
>>  .../vcodec/encoder/venc/venc_h264_if.c        |  5 ++--
>>  3 files changed, 29 insertions(+), 21 deletions(-)
>
>Hi Hans,
>
>I'd like to get some attention for this series in case it has been
>overlooked. It still applies to next-20240327 without conflict.
>Please let me know if you have any feedback or concerns on this.

Sorry this seems to have slipped through my fingers, I'll put it on my
list. Thanks for the notification.

>
>Thank you,
>Fei

Greetings,
Sebastian

>>
>> --
>> 2.43.0.472.g3155946c3a-goog
>>
>