linux-kernel - Re: [rtc-linux] [RESEND PATCH] RTC: MAX77686: Add Maxim 77686 driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 18 Dec 2012 17:00:54 -0800
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Jonghwa Lee <jonghwa3.lee@...sung.com>, rtc-linux@...glegroups.com,
	linux-kernel@...r.kernel.org,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Abhilash Kesavan <a.kesavan@...sung.com>,
	Chiwoong Byun <woong.byun@...sung.com>,
	Myugnjoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>
Subject: Re: [rtc-linux] [RESEND PATCH] RTC: MAX77686: Add Maxim 77686 driver

On Tue, 2012-12-18 at 16:30 -0800, Andrew Morton wrote:
> On Wed, 28 Nov 2012 15:50:57 +0900
> Jonghwa Lee <jonghwa3.lee@...sung.com> wrote:
> 
> > Add driver for support max77686 rtc.
> > MAX77686 rtc support smpl and wtsr mode. It has two alarm register
> > which can be used for alarming to wake system up. This drvier uses regmap
> > to access its register.
> > 
> > ...
> >
> > +static inline int max77686_rtc_calculate_wday(u8 shifted)
> > +{
> > +	int counter = -1;
> > +	while (shifted) {
> > +		shifted >>= 1;
> > +		counter++;
> > +	}
> > +	return counter;
> > +}
> 
> We should be able to use log2() in here?

	fls(shifted) - 1


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/