Re: Question on platform_driver probe in backlight driver

[Dmitry Torokhov <dtor@xxxxxxxxxxxxx>]

Hi,

Claudio Nieder wrote:
> 
> The corgi_bl.c doesn't do that. Instead its init function calls
> platform_driver_register passing it a platform_driver struct. This in turn
> references a probe function which does the backlight_device_register.
> 
> So I did the same in my source, and it does not work as I would expect.
> The init function is called and I see the printk output in syslog. But the
> probe function is never called, no printk output in syslog and also the
> files in /sys/class/backlight never appear.
> 
> Now I wonder, what am I missing. What must be done, so that the probe
> function is called?
> 

You need to create corresponding platform_device structure for your
->probe() method to run. Corgi creates corresponding platform_device
structure elsewhere; you might need to add it directly to your driver.

Hope this helps.

-- 
Dmitry

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