From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UAbvY-00043g-Nh for barebox@lists.infradead.org; Wed, 27 Feb 2013 07:59:49 +0000 Date: Wed, 27 Feb 2013 08:59:47 +0100 From: Sascha Hauer Message-ID: <20130227075947.GF1906@pengutronix.de> References: <1361897473-3325-1-git-send-email-maxime.ripard@free-electrons.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1361897473-3325-1-git-send-email-maxime.ripard@free-electrons.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [PATCH] log2: Fix declaration of __roundup_pow_of_two To: Maxime Ripard Cc: barebox@lists.infradead.org On Tue, Feb 26, 2013 at 05:51:13PM +0100, Maxime Ripard wrote: > The roundup_pow_of_two function is making use of __roundup_pow_of_two > when the call to __builtin_constant_p fails, which is not implemented in > barebox. > > Copied the code from Linux log2.h header. > > Signed-off-by: Maxime Ripard Applied, thanks Sascha > --- > include/linux/log2.h | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/include/linux/log2.h b/include/linux/log2.h > index 389043a..d9913f0 100644 > --- a/include/linux/log2.h > +++ b/include/linux/log2.h > @@ -54,6 +54,15 @@ bool is_power_of_2(unsigned long n) > return (n != 0 && ((n & (n - 1)) == 0)); > } > > +/* > + * round up to nearest power of two > + */ > +static inline __attribute__((const)) > +unsigned long __roundup_pow_of_two(unsigned long n) > +{ > + return 1UL << fls(n - 1); > +} > + > /** > * ilog2 - log of base 2 of 32-bit or a 64-bit unsigned value > * @n - parameter > -- > 1.7.10.4 > > > _______________________________________________ > barebox mailing list > barebox@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/barebox > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox