linux-kernel - Re: [PATCH] drm/tidss: oldi: convert to devm_drm_bridge

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Message-ID: <85c13da7-89f4-48e6-8a52-17f4df7a58b5@ti.com>
Date: Tue, 8 Jul 2025 11:51:10 +0530
From: Devarsh Thakkar <devarsht@...com>
To: Jayesh Choudhary <j-choudhary@...com>, <jyri.sarha@....fi>,
        <maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
        <tzimmermann@...e.de>, <dri-devel@...ts.freedesktop.org>,
        <tomi.valkeinen@...asonboard.com>
CC: <airlied@...il.com>, <simona@...ll.ch>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/tidss: oldi: convert to devm_drm_bridge_alloc() API

On 01/07/25 11:20, Jayesh Choudhary wrote:
> DRM bridges now uses "devm_drm_bridge_alloc()" for allocation and

s/uses/use

> initialization. "devm_kzalloc()" is not allowed anymore and it results
> in WARNING. So convert it.
> 
> Fixes: 7246e0929945 ("drm/tidss: Add OLDI bridge support")
> Signed-off-by: Jayesh Choudhary <j-choudhary@...com>

Reviewed-by: Devarsh Thakkar <devarsht@...com>

Regards
Devarsh

> ---
> 
> Warning log:
> <https://gist.github.com/Jayesh2000/e42c235bb57cb0f0af06c8c3bf886ef2>
> 
>   drivers/gpu/drm/tidss/tidss_oldi.c | 10 ++++------
>   1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tidss/tidss_oldi.c b/drivers/gpu/drm/tidss/tidss_oldi.c
> index 8223b8fec8ce..b0f99656e87e 100644
> --- a/drivers/gpu/drm/tidss/tidss_oldi.c
> +++ b/drivers/gpu/drm/tidss/tidss_oldi.c
> @@ -534,11 +534,10 @@ int tidss_oldi_init(struct tidss_device *tidss)
>   			continue;
>   		}
>   
> -		oldi = devm_kzalloc(tidss->dev, sizeof(*oldi), GFP_KERNEL);
> -		if (!oldi) {
> -			ret = -ENOMEM;
> -			goto err_put_node;
> -		}
> +		oldi = devm_drm_bridge_alloc(tidss->dev, struct tidss_oldi, bridge,
> +					     &tidss_oldi_bridge_funcs);
> +		if (IS_ERR(oldi))
> +			return PTR_ERR(oldi);
>   
>   		oldi->parent_vp = parent_vp;
>   		oldi->oldi_instance = oldi_instance;
> @@ -577,7 +576,6 @@ int tidss_oldi_init(struct tidss_device *tidss)
>   		/* Register the bridge. */
>   		oldi->bridge.of_node = child;
>   		oldi->bridge.driver_private = oldi;
> -		oldi->bridge.funcs = &tidss_oldi_bridge_funcs;
>   		oldi->bridge.timings = &default_tidss_oldi_timings;
>   
>   		tidss->oldis[tidss->num_oldis++] = oldi;