Re: Error when compiling kernel module - Re: More power management updates for v5.17-rc1

[Paul Cercueil]

Hi Rafael,

Le lun., févr. 21 2022 at 17:18:51 +0100, Rafael J. Wysocki 
<rafael@xxxxxxxxxx> a écrit :
> On Mon, Feb 21, 2022 at 1:15 PM eh kernel <ehkernel@xxxxxxxxx> wrote:
> >  Hi Rafael,
> >
> >  I now get an error when compiling the kernel module (out-of-tree) 
> > with the new PM macros.
> >
> >  /home/ubuntu/pressure/bmp280-core.c:1163:28: error: expected 
> > ‘)’ before ‘(’ token
> >   1163 |      bmp280_runtime_resume, NULL);
>
> Which of the macros has triggered this error?

I think the bug was introduced by 23a133c1ba67 ("iio:adc:ab8500: Switch 
from CONFIG_PM guards to pm_ptr() etc")

The macro takes 4 arguments and its first parameter should be the 
dev_pm_ops name, so "ab8500_gpadc_pm_ops".

It slipped during review.

Cheers,
-Paul

> >        |                            ^
> >        |                            )
> >  /home/ubuntu/pressure/bmp280-core.c:1149:12: warning: 
> > ‘bmp280_runtime_resume’ defined but not used [-Wunused-function]
> >   1149 | static int bmp280_runtime_resume(struct device *dev)
> >        |            ^~~~~~~~~~~~~~~~~~~~~
> >  /home/ubuntu/pressure/bmp280-core.c:1141:12: warning: 
> > ‘bmp280_runtime_suspend’ defined but not used [-Wunused-function]
> >   1141 | static int bmp280_runtime_suspend(struct device *dev)
> >        |            ^~~~~~~~~~~~~~~~~~~~~~
> >
> >  When I revert to the old file without the new PM macros it works 
> > just fine. Do I need to take some extra parameters into account now 
> > with the new format when compiling?