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

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Message-ID: <20080321105759.GB8959@enneenne.com>
Date:	Fri, 21 Mar 2008 11:57:59 +0100
From:	Rodolfo Giometti <giometti@...eenne.com>
To:	Kay Sievers <kay.sievers@...y.org>
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, 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?

Thanks,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail:    giometti@...eenne.com
Linux Device Driver                             giometti@...dd.com
Embedded Systems                     		giometti@...ux.it
UNIX programming                     phone:     +39 349 2432127
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