linux-kernel - Re: [RFC 27/42] drivers/tty/serial: don't check resource with devm_ioremap

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Date:	Fri, 10 May 2013 19:58:54 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>,
	Stephen Warren <swarren@...dotorg.org>,
	linux-serial@...r.kernel.org, linux-tegra@...r.kernel.org
Subject: Re: [RFC 27/42] drivers/tty/serial: don't check resource with
 devm_ioremap_resource

On Fri, May 10, 2013 at 08:26:36AM -0700, Greg Kroah-Hartman wrote:
> On Fri, May 10, 2013 at 10:17:12AM +0200, Wolfram Sang wrote:
> > devm_ioremap_resource does sanity checks on the given resource. No need to
> > duplicate this in the driver.
> > 
> > Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
> > ---
> >  drivers/tty/serial/serial-tegra.c |    6 +-----
> >  1 file changed, 1 insertion(+), 5 deletions(-)
> > 
> > diff --git a/drivers/tty/serial/serial-tegra.c b/drivers/tty/serial/serial-tegra.c
> > index 9799d04..9570b55 100644
> > --- a/drivers/tty/serial/serial-tegra.c
> > +++ b/drivers/tty/serial/serial-tegra.c
> > @@ -1295,13 +1295,9 @@ static int tegra_uart_probe(struct platform_device *pdev)
> >  	tup->cdata = cdata;
> >  
> >  	platform_set_drvdata(pdev, tup);
> > -	resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > -	if (!resource) {
> > -		dev_err(&pdev->dev, "No IO memory resource\n");
> > -		return -ENODEV;
> > -	}
> >  
> >  	u->mapbase = resource->start;
> > +	resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> 
> You need to look at your scripts, as again, this is totally wrong.

Yes, brown paper bag mistake :( Will fix!

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