Messages in this thread | | | Date | Mon, 6 Aug 2018 22:37:05 -0700 | From | Bjorn Andersson <> | Subject | Re: [PATCH V4 5/8] backlight: qcom-wled: Restructure the driver for WLED3 |
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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
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