linux-kernel - Re: [PATCH 01/10] drm/tidss: Use pm_runtime_resume_and

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Message-ID: <20231101134755.GQ12764@pendragon.ideasonboard.com>
Date:   Wed, 1 Nov 2023 15:47:55 +0200
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Cc:     Aradhya Bhatia <a-bhatia1@...com>,
        Devarsh Thakkar <devarsht@...com>,
        Jyri Sarha <jyri.sarha@....fi>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/10] drm/tidss: Use pm_runtime_resume_and_get()

Hi Tomi,

Thank you for the patch.

On Wed, Nov 01, 2023 at 11:17:38AM +0200, Tomi Valkeinen wrote:
> Use pm_runtime_resume_and_get() instead of pm_runtime_get_sync(), which
> will handle error situations better. Also fix the return, as there
> should be no reason for the current complex return.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>

But I think we would be better off dropping the two small wrappers.

> ---
>  drivers/gpu/drm/tidss/tidss_drv.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c
> index 4d063eb9cd0b..f403db11b846 100644
> --- a/drivers/gpu/drm/tidss/tidss_drv.c
> +++ b/drivers/gpu/drm/tidss/tidss_drv.c
> @@ -32,9 +32,9 @@ int tidss_runtime_get(struct tidss_device *tidss)
>  
>  	dev_dbg(tidss->dev, "%s\n", __func__);
>  
> -	r = pm_runtime_get_sync(tidss->dev);
> +	r = pm_runtime_resume_and_get(tidss->dev);
>  	WARN_ON(r < 0);
> -	return r < 0 ? r : 0;
> +	return r;
>  }
>  
>  void tidss_runtime_put(struct tidss_device *tidss)
> 

-- 
Regards,

Laurent Pinchart