linux-kernel - Re: [PATCH] tlclk: fix platform_device_register

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Date:	Wed, 29 Nov 2006 13:17:57 -0800
From:	Mark Gross <mgross@...ux.intel.com>
To:	Akinobu Mita <akinobu.mita@...il.com>,
	linux-kernel@...r.kernel.org,
	Sebastien Bouchard <sebastien.bouchard@...kontron.com>,
	akpm@...l.org
Subject: Re: [PATCH] tlclk: fix platform_device_register_simple() error check

On Tue, Nov 28, 2006 at 03:08:30PM +0900, Akinobu Mita wrote:
> On Mon, Nov 27, 2006 at 12:34:52PM -0800, Mark Gross wrote:
> > >  
> > >  	tlclk_device = platform_device_register_simple("telco_clock",
> > >  				-1, NULL, 0);
> > > -	if (!tlclk_device) {
> > > +	if (IS_ERR(tlclk_device)) {
> > ok
> > 
> > >  		printk(KERN_ERR "tlclk: platform_device_register failed.\n");
> > > -		ret = -EBUSY;
> > > +		ret = PTR_ERR(tlclk_device);
> > 
> > I don't know about this but I could be wrong.  Please convince me.
> 
> We expect platform_device_register_simple() returns proper errno as pointer
> when it fails.

What's wrong with EBUSY?

--mgross
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