Re: [PATCHv2 5/6] base: platform: name the device already during allocation

From: Heikki Krogerus
Date: Tue Aug 05 2014 - 02:38:45 EST


On Mon, Jul 14, 2014 at 07:55:43AM -0700, Greg Kroah-Hartman wrote:
> > > diff --git a/drivers/base/platform.c b/drivers/base/platform.c
> > > index 9e9227e..e856bc4 100644
> > > --- a/drivers/base/platform.c
> > > +++ b/drivers/base/platform.c
> > > @@ -177,11 +177,45 @@ struct platform_object {
> > > */
> > > void platform_device_put(struct platform_device *pdev)
> > > {
> > > - if (pdev)
> > > - put_device(&pdev->dev);
> > > + if (!pdev)
> > > + return;
> > > +
> > > + if (pdev->id_auto) {
> > > + ida_simple_remove(&platform_devid_ida, pdev->id);
> > > + pdev->id = PLATFORM_DEVID_AUTO;
> > > + }
> > > +
> > > + put_device(&pdev->dev);
> > > }
> > > EXPORT_SYMBOL_GPL(platform_device_put);
>
> Why would a single call to this function remove an id? That seems
> really wrong, you should be able to call get and put on a device
> numerous times, only the "last" reference should cause the device to be
> cleaned up.
>
> Shouldn't this be in the release function instead?

I'll fix this.

Thanks Greg.

--
heikki
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