linux-kernel - Re: [PATCH 5/6] soc/tegra: fuse: Add ACPI support for Tegra194 and Tegra234

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Date:   Mon, 21 Aug 2023 15:45:59 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Kartik <kkartik@...dia.com>
Cc:     arnd@...db.de, digetx@...il.com, frank.li@...o.com,
        jonathanh@...dia.com, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org, pdeschrijver@...dia.com,
        petlozup@...dia.com, pshete@...dia.com, robh@...nel.org,
        stefank@...dia.com, sumitg@...dia.com, thierry.reding@...il.com,
        windhl@....com
Subject: Re: [PATCH 5/6] soc/tegra: fuse: Add ACPI support for Tegra194 and
 Tegra234

On Mon, Aug 21, 2023 at 05:08:19PM +0530, Kartik wrote:
> On Fri, 2023-08-18 at 18:07 +0300, Andy Shevchenko wrote:
> >On Fri, Aug 18, 2023 at 03:00:27PM +0530, Kartik wrote:

...

> >> +	/* fuse->clk is not required when ACPI is used. */
> >> +	if (!fuse->read || (!fuse->clk && !has_acpi_companion(fuse->dev)))
> >
> >No, just make CLK optional and that's it.
> >
> >>  		return -EPROBE_DEFER;
> >
> If the Fuse driver is probed using device-tree. Then we need to make
> sure that fuse->clk has been initilaized.

So, I recommend to think about it more, maybe you can find better solution
than above.

And actually don't use has_acpi_companion() in this case. What you need is
is_acpi_node() or is_of_node() depending on the case you want to check for.

-- 
With Best Regards,
Andy Shevchenko