From: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Kevin Liu <kliu5@marvell.com>,
Michal Simek <michal.simek@xilinx.com>,
Suneel Garapati <suneel.garapati@xilinx.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org
Subject: Re: [PATCH 5/7] mmc: sdhci: simplify clock frequency calculation
Date: Wed, 15 Apr 2020 18:45:28 +0200 [thread overview]
Message-ID: <20200415164528.GE19897@qmqm.qmqm.pl> (raw)
In-Reply-To: <7967c035-52e3-1ce7-a82f-47d28a3cf484@intel.com>
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
next prev parent reply other threads:[~2020-04-15 16:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-02 11:54 [PATCH 0/7] SDHCI clock handling fixes and cleanups Michał Mirosław
2020-04-02 11:54 ` [PATCH 3/7] mmc: sdhci: fix SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN Michał Mirosław
2020-04-15 13:06 ` Adrian Hunter
2020-04-15 16:03 ` Michał Mirosław
2020-04-16 7:40 ` Adrian Hunter
2020-04-02 11:54 ` [PATCH 2/7] mmc: sdhci: fix programmable clock config from preset value Michał Mirosław
2020-04-15 12:44 ` Adrian Hunter
2020-04-02 11:54 ` [PATCH 1/7] mmc: sdhci: fix base clock usage in " Michał Mirosław
2020-04-15 12:25 ` Adrian Hunter
2020-04-15 16:28 ` Michał Mirosław
2020-04-16 8:26 ` Adrian Hunter
2020-04-17 13:55 ` Alan Cooper
2020-04-20 5:31 ` Adrian Hunter
2020-04-02 11:54 ` [PATCH 4/7] mmc: sdhci: move SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN frequency limit Michał Mirosław
2020-04-15 13:16 ` Adrian Hunter
2020-04-15 16:16 ` Michał Mirosław
2020-04-16 7:43 ` Adrian Hunter
2020-04-02 11:54 ` [PATCH 6/7] mmc: sdhci: squash v2/v3+ clock calculation differences Michał Mirosław
2020-04-02 11:54 ` [PATCH 5/7] mmc: sdhci: simplify clock frequency calculation Michał Mirosław
2020-04-03 13:02 ` kbuild test robot
2020-04-03 16:15 ` Michał Mirosław
2020-04-15 13:54 ` Adrian Hunter
2020-04-15 16:45 ` Michał Mirosław [this message]
2020-04-02 11:54 ` [PATCH 7/7] mmc: sdhci: respect non-zero div quirk in programmable clock mode Michał Mirosław
2020-04-03 16:03 ` kbuild test robot
2020-04-15 8:52 ` [PATCH 0/7] SDHCI clock handling fixes and cleanups Ulf Hansson
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