From: Gyungoh Yoo <gyungoh@gmail.com>
To: Oliver Neukum <oneukum@suse.de>
Cc: sameo@linux.intel.com, lee.jones@linaro.org,
grant.likely@linaro.org, robh+dt@kernel.org, jg1.han@samsung.com,
cooloney@gmail.com, pawel.moll@arm.com, mark.rutland@arm.com,
ijc+devicetree@hellion.org.uk, galak@codeaurora.org,
trivial@kernel.org, akpm@linux-foundation.org, jic23@kernel.org,
thomas.petazzoni@free-electrons.com, ktsai@capellamicro.com,
hs@denx.de, stwiss.opensource@diasemi.com,
matti.vaittinen@nsn.com, broonie@kernel.org,
jason@lakedaemon.net, heiko@sntech.de, shawn.guo@freescale.com,
florian.vaussard@epfl.ch, andrew@lunn.ch,
antonynpavlov@gmail.com, hytszk@gmail.com, plagnioj@jcrosoft.com,
tomi.valkeinen@ti.com, jack.yoo@skyworksinc.com,
linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org
Subject: Re: [PATCH v10 2/6] backlight: Add support Skyworks SKY81452 backlight driver
Date: Thu, 4 Dec 2014 11:04:49 +0900 [thread overview]
Message-ID: <20141204020449.GA2939@jack-ThinkPad-T520> (raw)
In-Reply-To: <1417600949.12511.7.camel@linux-0dmf.site>
On Wed, Dec 03, 2014 at 11:02:29AM +0100, Oliver Neukum wrote:
> On Wed, 2014-12-03 at 16:05 +0900, gyungoh@gmail.com wrote:
> > +static ssize_t sky81452_bl_store_enable(struct device *dev,
> > + struct device_attribute *attr, const char *buf, size_t
> > count)
> > +{
> > + struct regmap *regmap = bl_get_data(to_backlight_device(dev));
> > + unsigned long value;
> > + int ret;
> > +
> > + ret = kstrtoul(buf, 16, &value);
> > + if (IS_ERR_VALUE(ret))
> > + return ret;
> > +
> > + ret = regmap_update_bits(regmap, SKY81452_REG1, SKY81452_EN,
> > + value << CTZ(SKY81452_EN));
>
> No range checking for value?
Avaiable range is from 0 to SKY81452_EN.
regmap_update_bits() is masking the value.
>
> > + if (IS_ERR_VALUE(ret))
> > + return ret;
> > +
> > + return count;
> > +}
>
> Regards
> Oliver
>
> --
> Oliver Neukum <oneukum@suse.de>
>
next prev parent reply other threads:[~2014-12-04 2:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-03 7:05 [PATCH v10 0/6] Add Skyworks SKY81452 device drivers gyungoh
2014-12-03 7:05 ` [PATCH v10 1/6] mfd: Add support for Skyworks SKY81452 driver gyungoh
2014-12-03 7:05 ` [PATCH v10 2/6] backlight: Add support Skyworks SKY81452 backlight driver gyungoh
2014-12-03 7:13 ` Jingoo Han
2014-12-03 10:02 ` Oliver Neukum
2014-12-04 2:04 ` Gyungoh Yoo [this message]
2014-12-03 7:05 ` [PATCH v10 3/6] devicetree: mfd: Add new SKY81452 mfd binding gyungoh
2014-12-03 7:05 ` [PATCH v10 4/6] devicetree: backlight: Add new SKY81452 backlight binding gyungoh
2014-12-03 7:05 ` [PATCH v10 5/6] devicetree: Add vendor prefix for Skyworks Solutions, Inc gyungoh
2014-12-03 7:05 ` [PATCH v10 6/6] devicetree: i2c: Add SKY81452 to the Trivial Devices list gyungoh
-- strict thread matches above, loose matches on Subject: below --
2014-12-18 5:47 [PATCH v10 0/6] Add Skyworks SKY81452 device drivers gyungoh
2014-12-18 5:47 ` [PATCH v10 2/6] backlight: Add support Skyworks SKY81452 backlight driver gyungoh
2014-12-18 6:09 ` Jingoo Han
2014-12-18 6:13 ` Gyungoh Yoo
2015-01-07 2:19 [PATCH v10 0/6] Add Skyworks SKY81452 device drivers gyungoh
2015-01-07 2:19 ` [PATCH v10 2/6] backlight: Add support Skyworks SKY81452 backlight driver gyungoh
2015-01-23 6:28 [PATCH v10 0/6] Add Skyworks SKY81452 device drivers gyungoh
2015-01-23 6:28 ` [PATCH v10 2/6] backlight: Add support Skyworks SKY81452 backlight driver gyungoh
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