Re: [PATCH 24/24] ibmasm: convert to dynamic input_dev allocation

[Vernon Mauery <vernux@us.ibm.com>]

Dmitry Torokhov wrote:
> From: Vernon Mauery <vernux@us.ibm.com>,
> 
> Input: ibmasm - convert to dynamic input_dev allocation
> 
> Update the ibmasm driver to use the dynamic allocation of input_dev
> structs to work with the sysfs subsystem.
> 
> Vojtech: Fixed some problems/bugs in the patch.
> Dmitry: Fixed some more.
> 
> Signed-off-by: Vernon Mauery <vernux@us.ibm.com>
> Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
> ---
> 
>  drivers/misc/ibmasm/ibmasm.h |    6 +--
>  drivers/misc/ibmasm/remote.c |   82 +++++++++++++++++++++++++------------------
>  2 files changed, 51 insertions(+), 37 deletions(-)
> 

> Index: work/drivers/misc/ibmasm/remote.c
> ===================================================================
> --- work.orig/drivers/misc/ibmasm/remote.c
> +++ work/drivers/misc/ibmasm/remote.c

[snip]

>  
> -	input_register_device(&remote->mouse_dev);
> -	input_register_device(&remote->keybd_dev);
> +	error = input_register_device(mouse_dev);
> +	if (error)
> +		goto err_free_devices;
> +
> +	error = input_register_device(keybd_dev);
> +	if (error)
> +		goto err_unregister_mouse_dev;
> +
>  	enable_mouse_interrupts(sp);
>  
>  	printk(KERN_INFO "ibmasm remote responding to events on RSA card %d\n", sp->number);
>  
>  	return 0;
> +
> + err_unregister_mouse_dev:
> +	input_unregister_device(mouse_dev);

If I understand the API correctly now, shouldn't there be a
	mouse_dev = NULL;
right here to prevent the following input_free_device?

--Vernon

> + err_free_devices:
> +	input_free_device(mouse_dev);
> +	input_free_device(keybd_dev);
> +
> +	return error;
>  }
>  
>  void ibmasm_free_remote_input_dev(struct service_processor *sp)
>  {
>  	disable_mouse_interrupts(sp);
> -	input_unregister_device(&sp->remote->keybd_dev);
> -	input_unregister_device(&sp->remote->mouse_dev);
> -	kfree(sp->remote);
> +	input_unregister_device(sp->remote.mouse_dev);
> +	input_unregister_device(sp->remote.keybd_dev);
>  }
>  
> 
> -
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