On 07/10/2013 11:01 AM, Chen Gang F T wrote:
> 
>> > Hmm..., do we need call kobject_get() before kobject_put() in failure
>> > processing block ?
>> > 
> Oh, sorry for what I said for kobject_get/put() items above, it is
> incorrect.
> 
> What about the diff below for kobject_get() ?
> 
> -------------------------------diff begin-------------------------------
> 
> diff --git a/kernel/params.c b/kernel/params.c
> index 440e65d..ef8d720 100644
> --- a/kernel/params.c
> +++ b/kernel/params.c
> @@ -754,11 +754,11 @@ static struct module_kobject * __init 
> locate_module_kobject(const char *name)
>                               name, err);
>                       return NULL;
>               }
> -
> -             /* So that we hold reference in both cases. */
> -             kobject_get(&mk->kobj);
>       }
>  
> +     /* So that we hold reference in both cases. */
> +     kobject_get(&mk->kobj);
> +
>       return mk;
>  }
> 
> -------------------------------diff end---------------------------------
> 

Sorry again, this diff is incorrect, the original implementation has no
issues.


> And it also need add additional kobject_put(), if we really need
> process the failure in version_sysfs_builtin().

If need process failure, we really need it, but now, we only use
BUG_ON() is enough.


Thanks.
-- 
Chen Gang
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