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From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Barebox List <barebox@lists.infradead.org>
Subject: Re: [PATCH 4/4] pci: don't hide hard to understand sanity check in size calculation
Date: Sun, 15 Apr 2018 20:27:58 +0200	[thread overview]
Message-ID: <20180415182758.2gvkmxp7e5zzxtev@pengutronix.de> (raw)
In-Reply-To: <CAHQ1cqFkU=9aPg9xr3gbmApgx-rSfM3toH3m-Br3=PjN1Voqvw@mail.gmail.com>

Hello Andrey,

On Sat, Apr 14, 2018 at 09:25:59AM -0700, Andrey Smirnov wrote:
> On Fri, Apr 13, 2018 at 4:30 PM, Uwe Kleine-König
> <u.kleine-koenig@pengutronix.de> wrote:
> > +               /*
> > +                * if maxbase isn't in the form 0b1...10...0 there is something
> > +                * fishy
> > +                */
> > +               if ((maxbase | (maxbase - 1)) != (u32)-1 || maxbase == 0) {
> 
> U32_MAX instead of (u32)-1 ?

I don't feel strong here. Given that the LHS uses some characteristics
of the binary representation I slightly prefer (u32)-1, but I can change
it to U32_MAX, too.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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  reply	other threads:[~2018-04-15 18:28 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-13 23:30 [PATCH 1/4] pci: rename variable mask -> barval Uwe Kleine-König
2018-04-13 23:30 ` [PATCH 2/4] pci: refactor bar configuration Uwe Kleine-König
2018-04-13 23:30 ` [PATCH 3/4] pci: improve debug output Uwe Kleine-König
2018-04-13 23:58   ` Uwe Kleine-König
2018-04-13 23:30 ` [PATCH 4/4] pci: don't hide hard to understand sanity check in size calculation Uwe Kleine-König
2018-04-14 16:25   ` Andrey Smirnov
2018-04-15 18:27     ` Uwe Kleine-König [this message]
2018-04-16 13:42       ` Andrey Smirnov

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