linux-kernel - Re: [PATCH v1 3/3] iio: imu: adis16480: Fix getting the optional clocks

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Message-ID: <YlcBMGkdmGTq/mnr@smile.fi.intel.com>
Date:   Wed, 13 Apr 2022 19:58:24 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     "Sa, Nuno" <Nuno.Sa@...log.com>
Cc:     "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        "Hennerich, Michael" <Michael.Hennerich@...log.com>,
        Jonathan Cameron <jic23@...nel.org>
Subject: Re: [PATCH v1 3/3] iio: imu: adis16480: Fix getting the optional
 clocks

On Wed, Apr 13, 2022 at 03:38:47PM +0000, Sa, Nuno wrote:
> > From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> > Sent: Wednesday, April 13, 2022 4:41 PM

> > The extended clocks are optional and may not be present for some
> > SoCs
> > supported by this driver. Nevertheless, in case the clock is provided
> > but some error happens during its getting, that error should be
> > handled
> > properly. Use devm_clk_get_optional() API for that. Also report
> > possible
> > errors using dev_err_probe() to handle properly -EPROBE_DEFER
> > error.

> This is a nice cleanup patch... But the subject might be a bit
> misleading as it says "Fix". So I would expect a Fixes tag which
> I'm not sure it's really worth it here. Yes, the code was pretty much
> doing clk_get_optional() "by hand" but I think it was still functional.
> So to me, this is more an improvement rather than a fix...

Actually it is a fix, but not critical since no-one complains aloud so far.
The problematic part is logs exhausting if repetitive deferred probe happens.

> Anyways,
> 
> Reviewed-by: Nuno Sá <nuno.sa@...log.com>

Thanks!

-- 
With Best Regards,
Andy Shevchenko