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

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Message-ID: <4a924319-f3d8-8ce5-b3a3-bdd8e79837a7@wanadoo.fr>
Date:   Fri, 27 May 2022 19:06:18 +0200
From:   Marion & Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Randy Dunlap <rdunlap@...radead.org>, 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()



Le 27/05/2022 à 18:50, Christophe JAILLET a écrit :
> Le 27/05/2022 à 17:37, Randy Dunlap a écrit :
>>
>>
>> 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?
> 
> Hi,
> 
> This one looks fine. Thanks keliu.
> 
> Should I nitpick, there is an extra <space> in the commit description 
> before the final "." :)
> 
> 
> In fact, I'm sure of who can give a Reviewed-by: or Acked-by: tag. So up 

Typo: read: ... I'm NOT sure ...

> to now, I only comment in-line when I go through patches randomly picked 
> on the linext-kernel ML.
> 
> I think it is mainly for maintainer, but if anyone can give them, I'll 
> be glad to add them if it helps in the process.
> 
> CJ
> 
> 
>>
>> 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;
>>>   }
>>
> 
>