On Mon 09 Jul 03:22 PDT 2018, Kiran Gunda wrote: > diff --git a/drivers/video/backlight/qcom-wled.c b/drivers/video/backlight/qcom-wled.c [..] > @@ -365,6 +434,15 @@ static int wled_configure(struct wled *wled, struct device *dev) > > cfg->num_strings = cfg->num_strings + 1; > > + string_len = of_property_count_elems_of_size(dev->of_node, > + "qcom,enabled-strings", > + sizeof(u32)); > + if (string_len > 0) > + rc = of_property_read_u32_array(dev->of_node, > + "qcom,enabled-strings", > + wled->cfg.enabled_strings, qcom,enabled-strings is listed as optional, but without it we will end up with qcom,num-strings zeros in an array. Initialize wled->cfg.enabled_strings to 0,1,2,3 and the driver will be backwards compatible. I also think that if you do qcom,enabled-strings = <0, 1, 2>; there's no need to also specify qcom,num-strings = <3>; and we can just use string_len for num_strings. > + sizeof(u32)); > + > return 0; > } Regards, Bjorn -- 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
