Hi Lee, On Tue, Aug 26, 2014 at 10:22:05AM +0100, Lee Jones wrote: > On Mon, 25 Aug 2014, Chris Zhong wrote: > > On 08/20/2014 05:21 PM, Lee Jones wrote: > > >On Wed, 20 Aug 2014, Chris Zhong wrote: > > > > > >>The RK808 chip is a power management IC for multimedia and handheld > > >>devices. It contains the following components: > > >> > > >>- Regulators > > >>- RTC > > >> > > >>The rk808 core driver is registered as a platform driver and provides > > >>communication through I2C with the host device for the different > > >>components. > > >> > > >>Signed-off-by: Chris Zhong <zyw@xxxxxxxxxxxxxx> > > >>--- > > [...] > > > >>+ rk808->pdata = pdata; > > >Remove pdata from 'struct rk808'. You can obtain it from dev. > > > > Can I keep this pdata in rk808, because it is used in the regulator driver. > > The one obtain from dev maybe empty. > > If the one in dev is empty, you should populate that instead. No, drivers should not populate platform data in devices - they do not own it (unlike drvdata). Platform data should be read-only so that if one would unbind and then try to re-bind the driver we'd end up in exactly same state as before. For DT systems we should be allocating platform data separately and make sure we clean up after ourselves. Thanks. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
