linux-kernel - Re: powerpc: hv{cs,si}_close() both unsigned hp->count and hvcsd->open

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Message-ID: <jetz9q4lus.fsf@sykes.suse.de>
Date:	Sat, 29 Nov 2008 16:01:47 +0100
From:	Andreas Schwab <schwab@...e.de>
To:	roel kluin <roel.kluin@...il.com>
Cc:	benh@...nel.crashing.org, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org
Subject: Re: powerpc: hv{cs,si}_close() both unsigned hp->count and hvcsd->open_count cannot be negative

roel kluin <roel.kluin@...il.com> writes:

> Andreas Schwab wrote:
>> roel kluin <roel.kluin@...il.com> writes:
>> 
>>> -	if (--hvcsd->open_count == 0) {
>>> +	if (hvcsd->open_count == 1) {
>>> +		hvcsd->open_count--;
>> 
>> This is not the same.
>
> I think you're missing that I also decrement if (hvcsd->open_count > 1)

Yes, sorry, I missed that.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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