linux-kernel - Re: [PATCH] most: Directly use ida

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Message-ID: <7b0181da-7327-0594-ce9a-9601aca56909@infradead.org>
Date:   Fri, 27 May 2022 08:37:00 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     keliu <liuke94@...wei.com>, gregkh@...uxfoundation.org,
        christian.gromm@...rochip.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] most: Directly use ida_alloc()/free()



On 5/27/22 01:33, keliu wrote:
> Use ida_alloc()/ida_free() instead of deprecated
> ida_simple_get()/ida_simple_remove() .
> 
> Signed-off-by: keliu <liuke94@...wei.com>

The Signed-off-by: needs a more complete name (unless that is your full name).

Do any of Christophe's comments apply here?

thanks.

> ---
>  drivers/most/core.c      | 10 +++++-----
>  drivers/most/most_cdev.c |  6 +++---
>  2 files changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/most/core.c b/drivers/most/core.c
> index e4412c7d25b0..81d60d4ee8c2 100644
> --- a/drivers/most/core.c
> +++ b/drivers/most/core.c
> @@ -1286,7 +1286,7 @@ int most_register_interface(struct most_interface *iface)
>  	    !iface->poison_channel || (iface->num_channels > MAX_CHANNELS))
>  		return -EINVAL;
>  
> -	id = ida_simple_get(&mdev_id, 0, 0, GFP_KERNEL);
> +	id = ida_alloc(&mdev_id, GFP_KERNEL);
>  	if (id < 0) {
>  		dev_err(iface->dev, "Failed to allocate device ID\n");
>  		return id;
> @@ -1294,7 +1294,7 @@ int most_register_interface(struct most_interface *iface)
>  
>  	iface->p = kzalloc(sizeof(*iface->p), GFP_KERNEL);
>  	if (!iface->p) {
> -		ida_simple_remove(&mdev_id, id);
> +		ida_free(&mdev_id, id);
>  		return -ENOMEM;
>  	}
>  
> @@ -1308,7 +1308,7 @@ int most_register_interface(struct most_interface *iface)
>  		dev_err(iface->dev, "Failed to register interface device\n");
>  		kfree(iface->p);
>  		put_device(iface->dev);
> -		ida_simple_remove(&mdev_id, id);
> +		ida_free(&mdev_id, id);
>  		return -ENOMEM;
>  	}
>  
> @@ -1366,7 +1366,7 @@ int most_register_interface(struct most_interface *iface)
>  	}
>  	kfree(iface->p);
>  	device_unregister(iface->dev);
> -	ida_simple_remove(&mdev_id, id);
> +	ida_free(&mdev_id, id);
>  	return -ENOMEM;
>  }
>  EXPORT_SYMBOL_GPL(most_register_interface);
> @@ -1397,7 +1397,7 @@ void most_deregister_interface(struct most_interface *iface)
>  		device_unregister(&c->dev);
>  	}
>  
> -	ida_simple_remove(&mdev_id, iface->p->dev_id);
> +	ida_free(&mdev_id, iface->p->dev_id);
>  	kfree(iface->p);
>  	device_unregister(iface->dev);
>  }
> diff --git a/drivers/most/most_cdev.c b/drivers/most/most_cdev.c
> index 3722f9abd7b9..27913b1c8128 100644
> --- a/drivers/most/most_cdev.c
> +++ b/drivers/most/most_cdev.c
> @@ -100,7 +100,7 @@ static void destroy_cdev(struct comp_channel *c)
>  
>  static void destroy_channel(struct comp_channel *c)
>  {
> -	ida_simple_remove(&comp.minor_id, MINOR(c->devno));
> +	ida_free(&comp.minor_id, MINOR(c->devno));
>  	kfifo_free(&c->fifo);
>  	kfree(c);
>  }
> @@ -424,7 +424,7 @@ static int comp_probe(struct most_interface *iface, int channel_id,
>  	if (c)
>  		return -EEXIST;
>  
> -	current_minor = ida_simple_get(&comp.minor_id, 0, 0, GFP_KERNEL);
> +	current_minor = ida_alloc(&comp.minor_id, GFP_KERNEL);
>  	if (current_minor < 0)
>  		return current_minor;
>  
> @@ -471,7 +471,7 @@ static int comp_probe(struct most_interface *iface, int channel_id,
>  err_free_c:
>  	kfree(c);
>  err_remove_ida:
> -	ida_simple_remove(&comp.minor_id, current_minor);
> +	ida_free(&comp.minor_id, current_minor);
>  	return retval;
>  }
>  

-- 
~Randy