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

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Message-ID: <20080321105649.GA8959@enneenne.com>
Date:	Fri, 21 Mar 2008 11:56:49 +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 04:36:44AM +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/drivers/pps/sysfs.c b/drivers/pps/sysfs.c
> >  new file mode 100644
> >  index 0000000..c25c91c
> >  --- /dev/null
> >  +++ b/drivers/pps/sysfs.c
> >  @@ -0,0 +1,130 @@
> 
> >  +void pps_sysfs_remove_source_entry(struct pps_device *pps)
> >  +{
> >  +       /* Delete info files */
> >  +       sysfs_remove_group(&pps->dev->kobj, &pps_group);
> >  +}
> >  +
> >  +int pps_sysfs_create_source_entry(struct pps_device *pps)
> >  +{
> >  +       int ret;
> >  +
> >  +       /* Create info files */
> >  +       ret = sysfs_create_group(&pps->dev->kobj, &pps_group);
> 
> Any specific reason you are creating the group by hand, and not assign
> it to the default group in your class? It would will let the core
> handle it for you. The device add uevent to userspace will happen
> before you added the attributes, which is usually not nice.

No any specific reason... I just supposed it was the-right-think(TM)!
:)

Can you please suggest me an URL where I can see how to rework the
code?

Ciao,

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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