Re: [PATCH] kfree cleanups (remove redundant NULL checks) in drivers/telephony/ (actually ixj.c only)

[Jesper Juhl <juhl-lkml@dif.dk>]

On Fri, 6 May 2005, Andrew Morton wrote:

> 
> This patch adds behavioural changes:
> 
> -		if (j->read_buffer) {
> -			kfree(j->read_buffer);
> -			j->read_buffer = NULL;
> -			j->read_buffer_size = 0;
> -		}
> +		j->read_buffer = NULL;
> +		j->read_buffer_size = 0;
> 
> Now we'll zero ->read_buffer_size even if ->read_buffer was already NULL.
> 
> It's hard to believe that this could cause any problems, but please check
> that.
> 
When I initially read the code I didn't see any harm that could be done by 
that, but I'll take a second more careful look and report back - I'm 
pretty sure it's safe though.
I'll do this tomorrow since I'm off to catch some sleep now.

-- 
Jesper

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