From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Date: Mon, 31 May 2010 19:10:29 +0000 Subject: Re: [patch 2/2] input/tps6507x-ts: zero vs NULL Message-Id: <20100531191029.GD30712@core.coreip.homeip.net> List-Id: References: <20100531120215.GS5483@bicker> In-Reply-To: <20100531120215.GS5483@bicker> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Dan Carpenter , Todd Fischer , Samuel Ortiz , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-j On Mon, May 31, 2010 at 02:02:15PM +0200, Dan Carpenter wrote: > This patch silences a sparse warning: > > drivers/input/touchscreen/tps6507x-ts.c:345:19: > warning: Using plain integer as NULL pointer > drivers/input/touchscreen/tps6507x-ts.c:367:19: > warning: Using plain integer as NULL pointer > > Signed-off-by: Dan Carpenter > > diff --git a/drivers/input/touchscreen/tps6507x-ts.c b/drivers/input/touchscreen/tps6507x-ts.c > index b99db09..1e57e4e 100644 > --- a/drivers/input/touchscreen/tps6507x-ts.c > +++ b/drivers/input/touchscreen/tps6507x-ts.c > @@ -342,7 +342,7 @@ err2: > cancel_delayed_work(&tsc->work); > flush_workqueue(tsc->wq); > destroy_workqueue(tsc->wq); > - tsc->wq = 0; > + tsc->wq = NULL; > input_free_device(input_dev); > err1: > kfree(tsc); > @@ -364,7 +364,7 @@ static int __devexit tps6507x_ts_remove(struct platform_device *pdev) > cancel_delayed_work(&tsc->work); > flush_workqueue(tsc->wq); Why isn't it cancel_delayed_work_sync()? > destroy_workqueue(tsc->wq); > - tsc->wq = 0; > + tsc->wq = NULL; > Setting tsc to 0/NULL does not make much sense as it is being freed a couple of lines below. > input_free_device(input_dev); > -- Dmitry