Re: [PATCH] Switch atmel_serial to dev_pm_ops

[Frans Pop]

Albin Tonnerre wrote:
>> Why not
> 
>> #define atmel_serial_pm_ops   NULL
> 
> Because the .pm field is set to the address of atmel_serial_pm_ops, and
> iirc taking the address of NULL is not allowed.

The following construction is possible however (first used by Magnus Damm 
for some of the SuperH drivers):

#ifdef CONFIG_PM
[...]
#define DRIVER_PM_OPS (&driver_pm_ops)
#else
#define DRIVER_PM_OPS NULL
#endif

...
      .driver = {
...
             .pm = DRIVER_PM_OPS,
      }
...

Cheers,
FJP
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