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Message-ID: <20080826204534.GJ6656@linux.vnet.ibm.com>
Date: Tue, 26 Aug 2008 13:45:35 -0700
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: Harvey Harrison <harvey.harrison@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] rcu: spinlocks take an unsigned long flags
On Tue, Aug 26, 2008 at 01:00:44PM -0700, Harvey Harrison wrote:
> Noticed by sparse:
> kernel/rcuclassic.c:719:2: error: incompatible types in comparison expression (different signedness)
> kernel/rcuclassic.c:727:2: error: incompatible types in comparison expression (different signedness)
> kernel/rcuclassic.c: In function ‘rcu_init_percpu_data’:
> kernel/rcuclassic.c:719: warning: comparison of distinct pointer types lacks a cast
> kernel/rcuclassic.c:727: warning: comparison of distinct pointer types lacks a cast
This is a duplicate of http://lkml.org/lkml/2008/8/18/497, sent in
by Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>.
Thanx, Paul
> Signed-off-by: Harvey Harrison <harvey.harrison@...il.com>
> ---
> kernel/rcuclassic.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/kernel/rcuclassic.c b/kernel/rcuclassic.c
> index 3f69189..743cf05 100644
> --- a/kernel/rcuclassic.c
> +++ b/kernel/rcuclassic.c
> @@ -714,7 +714,7 @@ void rcu_check_callbacks(int cpu, int user)
> static void rcu_init_percpu_data(int cpu, struct rcu_ctrlblk *rcp,
> struct rcu_data *rdp)
> {
> - long flags;
> + unsigned long flags;
>
> spin_lock_irqsave(&rcp->lock, flags);
> memset(rdp, 0, sizeof(*rdp));
> --
> 1.6.0.340.g84854
>
>
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