On 2017-04-21 16:23, Philipp Zabel wrote: > On Thu, 2017-04-13 at 18:43 +0200, Peter Rosin wrote: > [...] >> +int mux_chip_register(struct mux_chip *mux_chip) >> +{ >> + int i; >> + int ret; >> + >> + for (i = 0; i < mux_chip->controllers; ++i) { >> + struct mux_control *mux = &mux_chip->mux[i]; >> + >> + if (mux->idle_state == mux->cached_state) >> + continue; > > I think this should be changed to > > - if (mux->idle_state == mux->cached_state) > + if (mux->idle_state == mux->cached_state || > + mux->idle_state == MUX_IDLE_AS_IS) > continue; > > or the following mux_control_set will be called with state == > MUX_IDLE_AS_IS. Alternatively, mux_control_set should return when passed > this value. That cannot happen because ->cached_state is initialized to -1 in mux_chip_alloc, so should always be == MUX_IDLE_AS_IS when registering. And drivers are not supposed to touch ->cached_state. I.e., ->cached_state is "owned" by the core. Cheers, peda >> + ret = mux_control_set(mux, mux->idle_state); >> + if (ret < 0) { >> + dev_err(&mux_chip->dev, "unable to set idle state\n"); >> + return ret; >> + } >> + } >> + >> + ret = device_add(&mux_chip->dev); >> + if (ret < 0) >> + dev_err(&mux_chip->dev, >> + "device_add failed in mux_chip_register: %d\n", ret); >> + return ret; >> +} >> +EXPORT_SYMBOL_GPL(mux_chip_register); > > regards > Philipp > -- 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