Re: [PATCH v4 4/5] wifi: brcmfmac: Add optional lpo clock enable support

[Dragan Simic <dsimic@xxxxxxxxxxx>]

Hello Ondrej,

On 2024-07-29 10:44, Ondřej Jirman wrote:
> On Mon, Jul 29, 2024 at 09:12:20AM GMT, Dragan Simic wrote:
> > Hello Jacobe,
> >
> > [...]
> >
> > >
> > > +	clk = devm_clk_get_optional_enabled(dev, "lpo");
> > > +	if (IS_ERR(clk))
> > > +	if (clk) {
> >
> > These two lines looks really confusing.  Shouldn't it be just a single
> > "if (!IS_ERR(clk)) {" line instead?
>
> It should be `!IS_ERR(clk) && clk` otherwise the debug message will be
> incorrect.

Ah, I see now, thanks.  There's also IS_ERR_OR_NULL, so the condition
can actually be "!IS_ERR_OR_NULL(clk)".

> > > +		brcmf_dbg(INFO, "enabling 32kHz clock\n");
> > > +		clk_set_rate(clk, 32768);
> > > +	}
> > > +
> > >  	if (!np || !of_device_is_compatible(np, "brcm,bcm4329-fmac"))
> > >  		return;