From: Zubair Lutfullah Date: Thu, 19 Sep 2013 06:24:00 +0000 (+0100) Subject: iio: ti_am335x_adc: optimize memory usage X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=0f6fc7d56fe56aad5410fdaa7cebbb918580a33c;p=openwrt%2Fstaging%2Fblogic.git iio: ti_am335x_adc: optimize memory usage 12 bit ADC data is stored in 32 bits of storage. Change from u32 to u16 to reduce wasted memory. Signed-off-by: Zubair Lutfullah Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index a952538a1a8b..ebe93eba3ec8 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -122,7 +122,7 @@ static int tiadc_channel_init(struct iio_dev *indio_dev, int channels) chan->datasheet_name = chan_name_ain[chan->channel]; chan->scan_type.sign = 'u'; chan->scan_type.realbits = 12; - chan->scan_type.storagebits = 32; + chan->scan_type.storagebits = 16; } indio_dev->channels = chan_array; @@ -186,7 +186,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev, if (stepid == map_val) { read = read & FIFOREAD_DATA_MASK; found = true; - *val = read; + *val = (u16) read; } }