linux-kernel - Re: [PATCH 1/7] LinuxPPS core support.

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Message-Id: <1206118905.24338.10.camel@lov.site>
Date:	Fri, 21 Mar 2008 18:01:45 +0100
From:	Kay Sievers <kay.sievers@...y.org>
To:	Rodolfo Giometti <giometti@...eenne.com>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Dave Jones <davej@...hat.com>, Sam Ravnborg <sam@...nborg.org>,
	Greg KH <greg@...ah.com>,
	Randy Dunlap <randy.dunlap@...cle.com>
Subject: Re: [PATCH 1/7] LinuxPPS core support.

On Fri, 2008-03-21 at 11:57 +0100, Rodolfo Giometti wrote:
> On Fri, Mar 21, 2008 at 04:50:51AM +0100, Kay Sievers wrote:
> > On Thu, Mar 6, 2008 at 1:09 PM, Rodolfo Giometti <giometti@...ux.it> wrote:
> > > This patch adds the kernel side of the PPS support currently named
> > >  "LinuxPPS".
> > 
> > >  diff --git a/include/linux/pps.h b/include/linux/pps.h
> > >  new file mode 100644
> > >  index 0000000..c455443
> > >  --- /dev/null
> > >  +++ b/include/linux/pps.h
> > >  @@ -0,0 +1,204 @@
> > 
> > >  +/* The main struct */
> > >  +struct pps_device {
> > >  +       struct pps_source_info info;            /* PSS source info */
> > >  +
> > >  +       struct pps_kparams params;              /* PPS's current params */
> > >  +
> > >  +       __u32 assert_sequence;                  /* PPS' assert event seq # */
> > >  +       __u32 clear_sequence;                   /* PPS' clear event seq # */
> > >  +       struct pps_ktime assert_tu;
> > >  +       struct pps_ktime clear_tu;
> > >  +       int current_mode;                       /* PPS mode at event time */
> > >  +
> > >  +       int go;                                 /* PPS event is arrived? */
> > >  +       wait_queue_head_t queue;                /* PPS event queue */
> > >  +
> > >  +       unsigned int id;                        /* PPS source unique ID */
> > >  +       struct cdev cdev;
> > >  +       struct device *dev;
> > >  +       int devno;
> > >  +       struct fasync_struct *async_queue;      /* fasync method */
> > >  +       spinlock_t lock;
> > >  +
> > >  +       atomic_t usage;                         /* usage count */
> > >  +       wait_queue_head_t usage_queue;
> > >  +
> > >  +       struct class class_dev;
> > 
> > Why is an entire class embedded into every device? :)
> 
> Uh! =:-o
> 
> Is that not right? What do you suggest to do?

It looks wrong. Do you use it for anything? I guess, you can just remove
it.

Kay

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