On Tue, May 12, 2020 at 7:33 PM Mark Brown <broonie@xxxxxxxxxx> wrote: > > On Tue, May 12, 2020 at 06:13:05PM +0900, Steve Lee wrote: > > On Mon, May 11, 2020 at 8:03 PM Mark Brown <broonie@xxxxxxxxxx> wrote: > > > > > +static const char * const max98390_current_limit_text[] = { > > > > + "0.00A", "0.50A", "1.00A", "1.05A", "1.10A", "1.15A", "1.20A", "1.25A", > > > > + "1.30A", "1.35A", "1.40A", "1.45A", "1.50A", "1.55A", "1.60A", "1.65A", > > > > This looks like it should be in DT too. > > > Since this control is needed while running system according to system > > battery situation. > > I'd keep this mixer for further use. > > That's... interesting for a current limit, and sounds like it would > have issues for the common case use of current limits to protect the > hardware. > > > > > +static int max98390_dsm_calib_get(struct snd_kcontrol *kcontrol, > > > > + struct snd_ctl_elem_value *ucontrol) > > > > +{ > > > > + struct snd_soc_component *component = > > > > + snd_soc_kcontrol_component(kcontrol); > > > > + > > > > + dev_warn(component->dev, "Get dsm_calib_get not supported\n"); > > > > + > > > > + return 0; > > > > +} > > > > Just don't implement the operation if you can't implement it. > > > If this not exist as dummy operation and all mixer was not working and > > could not implement better idea. > > Could you be more specific about what you mean by "not working" or how > simply not initializing the value returned fixes things please? I mean that xhandler_get pointing to NULL makes mixer list unexpected operation. I will do return fixed value without warn message. > > > Could you consider it as with warn message ? > > No, if there's a problem here we should fix it properly. Thanks for feed back.I will do return fixed value without warn message.