Re: [PATCH 1/1] drivers/misc/akm8975: Add compass sensor driver

[Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>]

On Fri, 27 Aug 2010 09:16:07 +0200 Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org> wrote:

> > +static int akm_aot_open(struct inode *inode, struct file *file)
> > +{
> > +	int ret = -1;
> 
> Useless and dangerous initialization.
> 
> > +
> > +	FUNCDBG("called");
> > +	if (atomic_cmpxchg(&open_flag, 0, 1) == 0) {
> > +		wake_up(&open_wq);
> > +		ret = 0;

this doesn't do anything either.

> > +	}
> > +
> > +	ret = nonseekable_open(inode, file);
> > +	if (ret)
> > +		return ret;
> > +
> > +	file->private_data = akmd_data;
> > +
> > +	return ret;
> > +}