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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Lee Jones <lee.jones@linaro.org>
Cc: "Olof Johansson" <olof@lixom.net>,
	"Arnd Bergmann" <arnd@arndb.de>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, "Rob Herring" <robh+dt@kernel.org>,
	"Eddie Huang" <eddie.huang@mediatek.com>,
	"Matthias Brugger" <matthias.bgg@gmail.com>,
	"Samuel Ortiz" <sameo@linux.intel.com>,
	"Yingjoe Chen (陳英洲)" <Yingjoe.Chen@mediatek.com>,
	"Henry Chen" <henryc.chen@mediatek.com>,
	"YH Chen (陳昱豪)" <yh.chen@mediatek.com>,
	"Flora Fu" <flora.fu@mediatek.com>
Subject: Re: [PATCH 7/7] mfd: Add support for the MediaTek MT6397 PMIC
Date: Mon, 26 Jan 2015 12:26:29 +0100	[thread overview]
Message-ID: <20150126112629.GP12209@pengutronix.de> (raw)
In-Reply-To: <20150126111119.GE11745@x1>

On Mon, Jan 26, 2015 at 11:11:19AM +0000, Lee Jones wrote:
> On Mon, 26 Jan 2015, Sascha Hauer wrote:
> > On Fri, Jan 23, 2015 at 04:14:40PM +0000, Lee Jones wrote:
> > > On Fri, 23 Jan 2015, Sascha Hauer wrote:
> > > > +	struct mt6397_chip *mt6397 = irq_get_chip_data(data->irq);
> > > > +	int shift = mt6397_irq_shift(data->hwirq);
> > > > +	int reg = mt6397_irq_reg(data->hwirq);
> > > > +	int reg_ofs = MT6397_INT_CON0 + reg * 2;
> > > > +
> > > > +	mt6397->irq_masks_cur[reg] &= ~(1 << shift);
> > > 
> > > s/(1 << shift)/BIT(shift)/
> > 
> > Is it mentioned somewhere that these BIT macros shall be used? There are
> > quadrillions of examples for both styles in the kernel and personally I
> > think 1 << x is more readable.
> 
> I haven't seen a hard and fast 'rule' per say.  I think it's left up
> to the Maintainer of any given subsystem. ;)

Ok, I know your opinion already, I hope Samuel has the same ;).
I'll change it to BIT().

Maybe I'll even change my personal opinion since I noticed that 1 << x
doesn't work for 64bit registers. Here 1UL << x must be used, but this
could easily be forgotten.

Sascha

-- 
Pengutronix e.K.                           |                             |
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  reply	other threads:[~2015-01-26 11:26 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-23 14:09 [PATCH v2] MediaTek PMIC support Sascha Hauer
2015-01-23 14:09 ` [PATCH 1/7] soc: Add MediaTek infracfg controller support Sascha Hauer
2015-01-23 14:09 ` [PATCH 2/7] soc: Add MediaTek pericfg " Sascha Hauer
2015-01-23 14:09 ` [PATCH 3/7] dt: bindings: Add MediaTek MT8135/MT8173 reset controller defines Sascha Hauer
2015-01-23 14:09 ` [PATCH 4/7] soc: mediatek: Add PMIC wrapper for MT8135 and MT6397 SoC Sascha Hauer
2015-01-23 14:10 ` [PATCH 5/7] ARM: dts: mt8135: Add pericfg, infracfg and pmic wrapper nodes Sascha Hauer
2015-01-23 14:10 ` [PATCH 6/7] ARM: dts: mt8135-evbp1: Add PMIC support Sascha Hauer
2015-01-23 14:10 ` [PATCH 7/7] mfd: Add support for the MediaTek MT6397 PMIC Sascha Hauer
2015-01-23 16:14   ` Lee Jones
2015-01-26 10:52     ` Sascha Hauer
2015-01-26 11:11       ` Lee Jones
2015-01-26 11:26         ` Sascha Hauer [this message]
2015-01-26 11:47 ` [PATCH v2] MediaTek PMIC support Sascha Hauer
2015-01-29 12:39   ` Matthias Brugger
2015-01-29 13:22     ` Matthias Brugger
2015-01-29 14:27     ` Sascha Hauer
2015-01-29 15:44       ` Matthias Brugger
2015-01-29 16:18         ` Sascha Hauer

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