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

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Date:	Sat, 29 Nov 2008 13:54:31 +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:

> -	if (--hvcsd->open_count == 0) {
> +	if (hvcsd->open_count == 1) {
> +		hvcsd->open_count--;

This is not the same.

> -	if (--hp->count == 0) {
> +	if (hp->count == 1) {
> +		hp->count--;

Likewise.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
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