linux-kernel - Re: [PATCH v3 00/65] clk: Make determine

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Date:   Tue, 25 Apr 2023 16:46:47 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Abel Vesa <abelvesa@...nel.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
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Subject: Re: [PATCH v3 00/65] clk: Make determine_rate mandatory for muxes

On Thu, Apr 13, 2023 at 02:44:51PM -0700, Stephen Boyd wrote:
> Quoting Maxime Ripard (2023-04-04 03:10:50)
> > Hi,
> > 
> > This is a follow-up to a previous series that was printing a warning
> > when a mux has a set_parent implementation but is missing
> > determine_rate().
> > 
> > The rationale is that set_parent() is very likely to be useful when
> > changing the rate, but it's determine_rate() that takes the parenting
> > decision. If we're missing it, then the current parent is always going
> > to be used, and thus set_parent() will not be used. The only exception
> > being a direct call to clk_set_parent(), but those are fairly rare
> > compared to clk_set_rate().
> > 
> > Stephen then asked to promote the warning to an error, and to fix up all
> > the muxes that are in that situation first. So here it is :)
> > 
> 
> Thanks for resending.
> 
> I was thinking that we apply this patch first and then set
> determine_rate clk_ops without setting the clk flag. The function name
> is up for debate.

Ack, I'll send a new version following your proposal

Maxime

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