Re: [PATCH v4 7/8] hwmon: pwm-fan: Read PWM FAN configuration from device tree

[Guenter Roeck]

On Mon, Feb 23, 2015 at 05:13:36PM +0100, Lukasz Majewski wrote:
> Hi Guenter,
> 
[ ... ]

> > 
> > If devicetree is not configured, of_property_count_elems_of_size
> > returns -ENOSYS, which is returned, causing the driver to fail
> > loading.
> 
> Has of_property_count_elems_of_size() returns -ENOSYS?
> 
> Maybe something has changed, but in my linux-vanila (3.19-rc4)
> at ./drivers/of/base.c it returns -EINVAL, -ENODATA or number of
> elements.
> 
> Have I missed something?
> 
Hi Lukasz,

Yes, you have. Check include/linux/of.h, line 484, in latest mainline.

Guenter
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