linux-kernel - Re: [PATCH 5/7] mmc: sdhci: simplify clock frequency calculation

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Message-ID: <20200415164528.GE19897@qmqm.qmqm.pl>
Date:   Wed, 15 Apr 2020 18:45:28 +0200
From:   Michał Mirosław <mirq-linux@...e.qmqm.pl>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Kevin Liu <kliu5@...vell.com>,
        Michal Simek <michal.simek@...inx.com>,
        Suneel Garapati <suneel.garapati@...inx.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org
Subject: Re: [PATCH 5/7] mmc: sdhci: simplify clock frequency calculation

On Wed, Apr 15, 2020 at 04:54:33PM +0300, Adrian Hunter wrote:
> On 2/04/20 2:54 pm, Michał Mirosław wrote:
> > Make clock frequency calculations simpler by replacing loops
> > with divide-and-clamp.
> 
> I am sorry, but I am not really sure the simplification is worth the code
> churn, risk of introducing new bugs, or validation effort.
> 
> IMO, the loops, while perhaps inefficient, are not hard to understand.

I guess this is a kind of religious subject. ;-)
I tend to prefer shorter and less-branchy code.

Best Regards,
Michał Mirosław