Re: [PATCH 14/78] staging: media: imx7-mipi-csis: use pm_runtime_resume_and_get()

From: "Rui Miguel Silva" <rmfrfs@gmail.com>
To: "Mauro Carvalho Chehab" <mchehab+huawei@kernel.org>
Cc: <linuxarm@huawei.com>, <mauro.chehab@huawei.com>,
	"Fabio Estevam" <festevam@gmail.com>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Mauro Carvalho Chehab" <mchehab@kernel.org>,
	"NXP Linux Team" <linux-imx@nxp.com>,
	"Pengutronix Kernel Team" <kernel@pengutronix.de>,
	"Philipp Zabel" <p.zabel@pengutronix.de>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Shawn Guo" <shawnguo@kernel.org>,
	"Steve Longerbeam" <slongerbeam@gmail.com>,
	<devel@driverdev.osuosl.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>, <linux-media@vger.kernel.org>
Subject: Re: [PATCH 14/78] staging: media: imx7-mipi-csis: use pm_runtime_resume_and_get()
Date: Mon, 26 Apr 2021 11:11:13 +0100	[thread overview]
Message-ID: <CAXKOS5IEQ7O.393TTUPR42AWE@arch-thunder> (raw)
In-Reply-To: <d5f5cb75e48ef7386f83ed023ec3dc1f5be5d08f.1619191723.git.mchehab+huawei@kernel.org>

Hi Mauro,
On Sat Apr 24, 2021 at 7:44 AM WEST, Mauro Carvalho Chehab wrote:
> Commit dd8088d5a896 ("PM: runtime: Add pm_runtime_resume_and_get to deal with usage counter")
> added pm_runtime_resume_and_get() in order to automatically handle
> dev->power.usage_count decrement on errors.
>
> Use the new API, in order to cleanup the error check logic.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Thanks, looks good.

Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>

------
Cheers,
	 Rui
> ---
>  drivers/staging/media/imx/imx7-mipi-csis.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c
> index 025fdc488bd6..1dc680d94a46 100644
> --- a/drivers/staging/media/imx/imx7-mipi-csis.c
> +++ b/drivers/staging/media/imx/imx7-mipi-csis.c
> @@ -695,11 +695,10 @@ static int mipi_csis_s_stream(struct v4l2_subdev *mipi_sd, int enable)
>  
>  		mipi_csis_clear_counters(state);
>  
> -		ret = pm_runtime_get_sync(&state->pdev->dev);
> -		if (ret < 0) {
> -			pm_runtime_put_noidle(&state->pdev->dev);
> +		ret = pm_runtime_resume_and_get(&state->pdev->dev);
> +		if (ret < 0)
>  			return ret;
> -		}
> +
>  		ret = v4l2_subdev_call(state->src_sd, core, s_power, 1);
>  		if (ret < 0 && ret != -ENOIOCTLCMD)
>  			goto done;
> -- 
> 2.30.2

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