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Date: Sat, 12 Sep 2015 11:14:04 +0100 From: Jonathan Cameron <jic23@...nel.org> To: Shraddha Barke <shraddha.6596@...il.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Julia Lawall <julia.lawall@...6.fr>, Hartmut Knaack <knaack.h@....de>, Andreas Dilger <andreas.dilger@...el.com> Cc: Ian Abbott <abbotti@....co.uk>, linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/6] Staging: iio: meter: Prefer using the BIT macro On 10/09/15 17:30, Shraddha Barke wrote: > This patch replaces bit shifting on 1 with the BIT(x) macro > > This was done with coccinelle: > @@ int g; @@ > > -(1 << g) > +BIT(g) > > Signed-off-by: Shraddha Barke <shraddha.6596@...il.com> There are a number of places in these drivers where the use of GENMASK and a related shift macro would also improve the code, but the changes here seem sensible. I'll pick this one up. Applied to the togreg branch of iio.git. Thanks, Jonathan > --- > drivers/staging/iio/meter/ade7753.c | 8 ++++---- > drivers/staging/iio/meter/ade7754.c | 6 +++--- > drivers/staging/iio/meter/ade7758_core.c | 6 +++--- > drivers/staging/iio/meter/ade7759.c | 8 ++++---- > drivers/staging/iio/meter/ade7854.c | 6 +++--- > 5 files changed, 17 insertions(+), 17 deletions(-) > > diff --git a/drivers/staging/iio/meter/ade7753.c b/drivers/staging/iio/meter/ade7753.c > index ffc7f0d..3d2e50c 100644 > --- a/drivers/staging/iio/meter/ade7753.c > +++ b/drivers/staging/iio/meter/ade7753.c > @@ -219,7 +219,7 @@ static int ade7753_reset(struct device *dev) > u16 val; > > ade7753_spi_read_reg_16(dev, ADE7753_MODE, &val); > - val |= 1 << 6; /* Software Chip Reset */ > + val |= BIT(6); /* Software Chip Reset */ > > return ade7753_spi_write_reg_16(dev, ADE7753_MODE, val); > } > @@ -328,10 +328,10 @@ static int ade7753_set_irq(struct device *dev, bool enable) > goto error_ret; > > if (enable) > - irqen |= 1 << 3; /* Enables an interrupt when a data is > + irqen |= BIT(3); /* Enables an interrupt when a data is > present in the waveform register */ > else > - irqen &= ~(1 << 3); > + irqen &= ~BIT(3); > > ret = ade7753_spi_write_reg_8(dev, ADE7753_IRQEN, irqen); > > @@ -345,7 +345,7 @@ static int ade7753_stop_device(struct device *dev) > u16 val; > > ade7753_spi_read_reg_16(dev, ADE7753_MODE, &val); > - val |= 1 << 4; /* AD converters can be turned off */ > + val |= BIT(4); /* AD converters can be turned off */ > > return ade7753_spi_write_reg_16(dev, ADE7753_MODE, val); > } > diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c > index f12b2e5..8552c76 100644 > --- a/drivers/staging/iio/meter/ade7754.c > +++ b/drivers/staging/iio/meter/ade7754.c > @@ -223,7 +223,7 @@ static int ade7754_reset(struct device *dev) > if (ret < 0) > return ret; > > - val |= 1 << 6; /* Software Chip Reset */ > + val |= BIT(6); /* Software Chip Reset */ > return ade7754_spi_write_reg_8(dev, ADE7754_OPMODE, val); > } > > @@ -350,10 +350,10 @@ static int ade7754_set_irq(struct device *dev, bool enable) > goto error_ret; > > if (enable) > - irqen |= 1 << 14; /* Enables an interrupt when a data is > + irqen |= BIT(14); /* Enables an interrupt when a data is > present in the waveform register */ > else > - irqen &= ~(1 << 14); > + irqen &= ~BIT(14); > > ret = ade7754_spi_write_reg_16(dev, ADE7754_IRQEN, irqen); > if (ret) > diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c > index 77141ae..3883808 100644 > --- a/drivers/staging/iio/meter/ade7758_core.c > +++ b/drivers/staging/iio/meter/ade7758_core.c > @@ -308,7 +308,7 @@ static int ade7758_reset(struct device *dev) > dev_err(dev, "Failed to read opmode reg\n"); > return ret; > } > - val |= 1 << 6; /* Software Chip Reset */ > + val |= BIT(6); /* Software Chip Reset */ > ret = ade7758_spi_write_reg_8(dev, ADE7758_OPMODE, val); > if (ret < 0) > dev_err(dev, "Failed to write opmode reg\n"); > @@ -426,10 +426,10 @@ int ade7758_set_irq(struct device *dev, bool enable) > goto error_ret; > > if (enable) > - irqen |= 1 << 16; /* Enables an interrupt when a data is > + irqen |= BIT(16); /* Enables an interrupt when a data is > present in the waveform register */ > else > - irqen &= ~(1 << 16); > + irqen &= ~BIT(16); > > ret = ade7758_spi_write_reg_24(dev, ADE7758_MASK, irqen); > if (ret) > diff --git a/drivers/staging/iio/meter/ade7759.c b/drivers/staging/iio/meter/ade7759.c > index dbceda1..23e7392 100644 > --- a/drivers/staging/iio/meter/ade7759.c > +++ b/drivers/staging/iio/meter/ade7759.c > @@ -224,7 +224,7 @@ static int ade7759_reset(struct device *dev) > if (ret < 0) > return ret; > > - val |= 1 << 6; /* Software Chip Reset */ > + val |= BIT(6); /* Software Chip Reset */ > return ade7759_spi_write_reg_16(dev, > ADE7759_MODE, > val); > @@ -288,10 +288,10 @@ static int ade7759_set_irq(struct device *dev, bool enable) > goto error_ret; > > if (enable) > - irqen |= 1 << 3; /* Enables an interrupt when a data is > + irqen |= BIT(3); /* Enables an interrupt when a data is > present in the waveform register */ > else > - irqen &= ~(1 << 3); > + irqen &= ~BIT(3); > > ret = ade7759_spi_write_reg_8(dev, ADE7759_IRQEN, irqen); > > @@ -314,7 +314,7 @@ static int ade7759_stop_device(struct device *dev) > return ret; > } > > - val |= 1 << 4; /* AD converters can be turned off */ > + val |= BIT(4); /* AD converters can be turned off */ > > return ade7759_spi_write_reg_16(dev, ADE7759_MODE, val); > } > diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c > index d620bbd..a838835 100644 > --- a/drivers/staging/iio/meter/ade7854.c > +++ b/drivers/staging/iio/meter/ade7854.c > @@ -181,7 +181,7 @@ static int ade7854_reset(struct device *dev) > u16 val; > > st->read_reg_16(dev, ADE7854_CONFIG, &val); > - val |= 1 << 7; /* Software Chip Reset */ > + val |= BIT(7); /* Software Chip Reset */ > > return st->write_reg_16(dev, ADE7854_CONFIG, val); > } > @@ -420,10 +420,10 @@ static int ade7854_set_irq(struct device *dev, bool enable) > goto error_ret; > > if (enable) > - irqen |= 1 << 17; /* 1: interrupt enabled when all periodical > + irqen |= BIT(17); /* 1: interrupt enabled when all periodical > (at 8 kHz rate) DSP computations finish. */ > else > - irqen &= ~(1 << 17); > + irqen &= ~BIT(17); > > ret = st->write_reg_32(dev, ADE7854_MASK0, irqen); > if (ret) > -- 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/
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