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iio:adc:berlin2-adc: use short operator format

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Use augmented assignment to subtract the offset for negative temperature
values.
Specify the amount of private data to be allocated through
devm_iio_device_alloc() with sizeof(*priv), as it is shorter and common
practice in IIO.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Hartmut Knaack 2015-07-28 00:39:01 +02:00 committed by Jonathan Cameron
parent 688febbd16
commit 609e9d88f2
1 changed files with 2 additions and 3 deletions
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5
drivers/iio/adc/berlin2-adc.c
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@ -221,7 +221,7 @@ static int berlin2_adc_read_raw(struct iio_dev *indio_dev,
return temp;
if (temp > 2047)
temp = -(4096 - temp);
temp -= 4096;
/* Convert to milli Celsius */
*val = ((temp * 100000) / 264 - 270000);
@ -286,8 +286,7 @@ static int berlin2_adc_probe(struct platform_device *pdev)
int irq, tsen_irq;
int ret;
indio_dev = devm_iio_device_alloc(&pdev->dev,
sizeof(struct berlin2_adc_priv));
indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv));
if (!indio_dev)
return -ENOMEM;