linux-kernel - Re: [PATCH] misc: bcm-vk: Directly use ida

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <YqA0NGXzOCnoFVN3@kroah.com>
Date:   Wed, 8 Jun 2022 07:31:32 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Ke Liu <liuke94@...wei.com>
Cc:     scott.branden@...adcom.com, bcm-kernel-feedback-list@...adcom.com,
        arnd@...db.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] misc: bcm-vk: Directly use ida_alloc()/free()

On Wed, Jun 08, 2022 at 03:19:27AM +0000, Ke Liu wrote:
> Use ida_alloc()/ida_free() instead of deprecated
> ida_simple_get()/ida_simple_remove().
> 
> Signed-off-by: Ke Liu <liuke94@...wei.com>
> ---
>  drivers/misc/bcm-vk/bcm_vk_dev.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/misc/bcm-vk/bcm_vk_dev.c b/drivers/misc/bcm-vk/bcm_vk_dev.c
> index a16b99bdaa13..a3a82ebbc699 100644
> --- a/drivers/misc/bcm-vk/bcm_vk_dev.c
> +++ b/drivers/misc/bcm-vk/bcm_vk_dev.c
> @@ -1401,7 +1401,7 @@ static int bcm_vk_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>  		bcm_vk_tty_set_irq_enabled(vk, i);
>  	}
>  
> -	id = ida_simple_get(&bcm_vk_ida, 0, 0, GFP_KERNEL);
> +	id = ida_alloc(&bcm_vk_ida, GFP_KERNEL);
>  	if (id < 0) {
>  		err = id;
>  		dev_err(dev, "unable to get id\n");
> @@ -1500,7 +1500,7 @@ static int bcm_vk_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
>  	misc_device->name = NULL;
>  
>  err_ida_remove:
> -	ida_simple_remove(&bcm_vk_ida, id);
> +	ida_free(&bcm_vk_ida, id);
>  
>  err_irq:
>  	for (i = 0; i < vk->num_irqs; i++)
> @@ -1573,7 +1573,7 @@ static void bcm_vk_remove(struct pci_dev *pdev)
>  	if (misc_device->name) {
>  		misc_deregister(misc_device);
>  		kfree(misc_device->name);
> -		ida_simple_remove(&bcm_vk_ida, vk->devid);
> +		ida_free(&bcm_vk_ida, vk->devid);

If conversions were this simple, why wouldn't the maintainer have done
this already for the whole tree?

Are you sure these types of changes are correct?  How did you test them?

thanks,

greg k-h