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SubjectRe: [PATCH 1/7] LinuxPPS core support.
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On Fri, 2008-03-21 at 11:56 +0100, Rodolfo Giometti wrote:
> 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@linux.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?

You can assign class->dev_attrs the array of attributes, and the driver
core will create these attributes for all devices that get registered
with that class. See: drivers/base/core.c :: device_add_attrs().

Kay



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