From: Helen Koike <helen.koike@collabora.com>
To: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>,
linux-media@vger.kernel.org
Cc: ezequiel@collabora.com, hverkuil@xs4all.nl, kernel@collabora.com,
dafna3@gmail.com, sakari.ailus@linux.intel.com,
linux-rockchip@lists.infradead.org, mchehab@kernel.org
Subject: Re: [PATCH] media: staging: rkisp1: don't lock media's graph_mutex when calling rkisp1_create_links
Date: Wed, 5 Feb 2020 10:45:20 -0300 [thread overview]
Message-ID: <fe913642-4092-afcb-90c7-5c51b8f3a2e5@collabora.com> (raw)
In-Reply-To: <20200204214446.20381-1-dafna.hirschfeld@collabora.com>
On 2/4/20 7:44 PM, Dafna Hirschfeld wrote:
> The function rkisp1_create_links calls media_entity_get_fwnode_pad
> and media_create_pad_link in the mc api. Those calls don't require
> locking the graph_mutex so remove the locking.
>
> Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Acked-by: Helen Koike <helen.koike@collabora.com>
Thanks
Helen
> ---
> drivers/staging/media/rkisp1/rkisp1-dev.c | 10 ++++------
> 1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/media/rkisp1/rkisp1-dev.c b/drivers/staging/media/rkisp1/rkisp1-dev.c
> index 9d866396a5de..64e61ab29143 100644
> --- a/drivers/staging/media/rkisp1/rkisp1-dev.c
> +++ b/drivers/staging/media/rkisp1/rkisp1-dev.c
> @@ -219,19 +219,17 @@ static int rkisp1_subdev_notifier_complete(struct v4l2_async_notifier *notifier)
> container_of(notifier, struct rkisp1_device, notifier);
> int ret;
>
> - mutex_lock(&rkisp1->media_dev.graph_mutex);
> ret = rkisp1_create_links(rkisp1);
> if (ret)
> - goto unlock;
> + return ret;
> +
> ret = v4l2_device_register_subdev_nodes(&rkisp1->v4l2_dev);
> if (ret)
> - goto unlock;
> + return ret;
>
> dev_dbg(rkisp1->dev, "Async subdev notifier completed\n");
>
> -unlock:
> - mutex_unlock(&rkisp1->media_dev.graph_mutex);
> - return ret;
> + return 0;
> }
>
> static int rkisp1_fwnode_parse(struct device *dev,
>
next prev parent reply other threads:[~2020-02-05 13:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-04 21:44 [PATCH] media: staging: rkisp1: don't lock media's graph_mutex when calling rkisp1_create_links Dafna Hirschfeld
2020-02-04 21:44 ` [PATCH] media: staging: rkisp1: fix test of return value of media_entity_get_fwnode_pad Dafna Hirschfeld
2020-02-05 13:45 ` Helen Koike
2020-02-04 21:44 ` [PATCH] media: staging: rkisp1: improve inner documentation in rkisp1-isp.c Dafna Hirschfeld
2020-02-05 13:48 ` Helen Koike
2020-02-05 13:45 ` Helen Koike [this message]
2020-02-14 9:47 ` [PATCH] media: staging: rkisp1: don't lock media's graph_mutex when calling rkisp1_create_links Sakari Ailus
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