From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: <linuxarm@huawei.com>, <mauro.chehab@huawei.com>,
Andrew-CT Chen <andrew-ct.chen@mediatek.com>,
Houlong Wei <houlong.wei@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Minghsiu Tsai <minghsiu.tsai@mediatek.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-media@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>
Subject: Re: [PATCH v4 10/79] media: mdk-mdp: fix pm_runtime_get_sync() usage count
Date: Fri, 30 Apr 2021 17:30:25 +0100 [thread overview]
Message-ID: <20210430173025.0000359f@Huawei.com> (raw)
In-Reply-To: <39851c54046fa0d63f34549803df3388361828b7.1619621413.git.mchehab+huawei@kernel.org>
On Wed, 28 Apr 2021 16:51:31 +0200
Mauro Carvalho Chehab <mchehab+huawei@kernel.org> wrote:
> The pm_runtime_get_sync() internally increments the
> dev->power.usage_count without decrementing it, even on errors.
> Replace it by the new pm_runtime_resume_and_get(), introduced by:
> commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
> in order to properly decrement the usage counter and avoid memory
> leaks.
>
> While here, fix the return contition of mtk_mdp_m2m_start_streaming(),
> as it doesn't make any sense to return 0 if the PM runtime failed
> to resume.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> ---
> drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
> index ace4528cdc5e..f14779e7596e 100644
> --- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
> +++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
> @@ -391,12 +391,12 @@ static int mtk_mdp_m2m_start_streaming(struct vb2_queue *q, unsigned int count)
> struct mtk_mdp_ctx *ctx = q->drv_priv;
> int ret;
>
> - ret = pm_runtime_get_sync(&ctx->mdp_dev->pdev->dev);
> + ret = pm_runtime_resume_and_get(&ctx->mdp_dev->pdev->dev);
> if (ret < 0)
> - mtk_mdp_dbg(1, "[%d] pm_runtime_get_sync failed:%d",
> + mtk_mdp_dbg(1, "[%d] pm_runtime_resume_and_get failed:%d",
> ctx->id, ret);
>
> - return 0;
> + return ret;
> }
>
> static void *mtk_mdp_m2m_buf_remove(struct mtk_mdp_ctx *ctx,
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-04-30 16:34 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1619621413.git.mchehab+huawei@kernel.org>
2021-04-28 14:51 ` [PATCH v4 07/79] media: exynos-gsc: don't resume at remove time Mauro Carvalho Chehab
2021-04-28 15:25 ` Sylwester Nawrocki
2021-04-28 19:44 ` kernel test robot
2021-04-28 19:56 ` kernel test robot
2021-04-28 14:51 ` [PATCH v4 08/79] media: atmel: properly get pm_runtime Mauro Carvalho Chehab
2021-04-30 16:13 ` Jonathan Cameron
2021-04-28 14:51 ` [PATCH v4 10/79] media: mdk-mdp: fix pm_runtime_get_sync() usage count Mauro Carvalho Chehab
2021-04-30 16:30 ` Jonathan Cameron [this message]
2021-04-28 14:51 ` [PATCH v4 16/79] media: mtk-vcodec: " Mauro Carvalho Chehab
2021-04-30 16:44 ` Jonathan Cameron
2021-04-28 14:51 ` [PATCH v4 17/79] media: s5p-jpeg: " Mauro Carvalho Chehab
2021-04-28 14:51 ` [PATCH v4 19/79] media: sunxi: " Mauro Carvalho Chehab
2021-04-30 16:48 ` Jonathan Cameron
2021-04-28 14:51 ` [PATCH v4 22/79] staging: media: imx7-mipi-csis: use pm_runtime_resume_and_get() Mauro Carvalho Chehab
2021-04-28 14:51 ` [PATCH v4 24/79] staging: media: cedrus_video: " Mauro Carvalho Chehab
2021-04-30 17:05 ` Jonathan Cameron
2021-04-28 14:52 ` [PATCH v4 57/79] media: rockchip/rga: " Mauro Carvalho Chehab
2021-04-28 17:11 ` Ezequiel Garcia
2021-04-28 14:52 ` [PATCH v4 62/79] media: exynos4-is: " Mauro Carvalho Chehab
2021-04-30 17:49 ` Jonathan Cameron
2021-04-28 14:52 ` [PATCH v4 63/79] media: exynos-gsc: " Mauro Carvalho Chehab
2021-04-30 17:50 ` Jonathan Cameron
2021-04-28 14:52 ` [PATCH v4 64/79] media: mtk-jpeg: " Mauro Carvalho Chehab
2021-04-28 14:52 ` [PATCH v4 70/79] media: rkisp1: " Mauro Carvalho Chehab
2021-04-28 14:52 ` [PATCH v4 72/79] media: s5p-mfc: " Mauro Carvalho Chehab
2021-04-28 14:52 ` [PATCH v4 73/79] media: stm32: " Mauro Carvalho Chehab
2021-04-30 17:58 ` Jonathan Cameron
2021-04-28 14:52 ` [PATCH v4 74/79] media: sunxi: " Mauro Carvalho Chehab
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210430173025.0000359f@Huawei.com \
--to=jonathan.cameron@huawei.com \
--cc=andrew-ct.chen@mediatek.com \
--cc=houlong.wei@mediatek.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=linuxarm@huawei.com \
--cc=matthias.bgg@gmail.com \
--cc=mauro.chehab@huawei.com \
--cc=mchehab+huawei@kernel.org \
--cc=mchehab@kernel.org \
--cc=minghsiu.tsai@mediatek.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).