linux-kernel - Re: [PATCH] clocksource/drivers/npcm: fix GENMASK and timer operation

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Date:   Mon, 15 Jul 2019 17:08:07 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Avi Fishman <avifishman70@...il.com>
cc:     Tomer Maimon <tmaimon77@...il.com>,
        Tali Perry <tali.perry1@...il.com>,
        Patrick Venture <venture@...gle.com>,
        Nancy Yuen <yuenn@...gle.com>,
        Benjamin Fair <benjaminfair@...gle.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] clocksource/drivers/npcm: fix GENMASK and timer
 operation

Avi,

On Mon, 15 Jul 2019, Avi Fishman wrote:
> On Mon, Jul 15, 2019 at 3:37 PM Thomas Gleixner <tglx@...utronix.de> wrote:
> >   9bdd7bb3a844 ("clocksource/drivers/npcm: Fix misuse of GENMASK macro")
> 
> The automatic fix changed from
> GENMASK(3, 27) to
> GENMASK(27, 3)
> I reviewd again the code to check how it worked so far and saw that it
> should have been
> GENMASK(28, 27) - this is a different value than 9bdd7bb3a844
> For our fortune this wrong value didn't effect the our final write to
> the register.
> But still this should be fixed.

Fair enough. Please explain it proper in the changelog.

Thanks,

	tglx