linux-kernel - Re: [PATCH] usb: typec: Add the missed altmode_id_remove() in typec_register

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Date:   Thu, 17 Jun 2021 13:18:07 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Jing Xiangfeng <jingxiangfeng@...wei.com>
Cc:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: typec: Add the missed altmode_id_remove() in
 typec_register_altmode()

On Thu, Jun 17, 2021 at 03:32:26PM +0800, Jing Xiangfeng wrote:
> typec_register_altmode() misses to call altmode_id_remove() in an error
> path. Add the missed function call to fix it.
> 
> Fixes: 8a37d87d72f0 ("usb: typec: Bus type for alternate modes")
> Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>

Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
>  drivers/usb/typec/class.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
> index b9429c9f65f6..aeef453aa658 100644
> --- a/drivers/usb/typec/class.c
> +++ b/drivers/usb/typec/class.c
> @@ -517,8 +517,10 @@ typec_register_altmode(struct device *parent,
>  	int ret;
>  
>  	alt = kzalloc(sizeof(*alt), GFP_KERNEL);
> -	if (!alt)
> +	if (!alt) {
> +		altmode_id_remove(parent, id);
>  		return ERR_PTR(-ENOMEM);
> +	}
>  
>  	alt->adev.svid = desc->svid;
>  	alt->adev.mode = desc->mode;
> -- 
> 2.26.0.106.g9fadedd

-- 
heikki