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iio:bma180: Drop _update_scan_mode()

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statically allocate maximum size

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Peter Meerwald 2014-08-19 23:43:00 +01:00 committed by Jonathan Cameron
parent b81fbab7f5
commit b9a6a237ff
1 changed files with 1 additions and 17 deletions
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18
drivers/iio/accel/bma180.c
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@ -82,7 +82,7 @@ struct bma180_data {
int scale;
int bw;
bool pmode;
char *buff;
u8 buff[16]; /* 3x 16-bit + 8-bit + padding + timestamp */
};
enum bma180_chan {
@ -408,26 +408,10 @@ static int bma180_write_raw(struct iio_dev *indio_dev,
}
}
static int bma180_update_scan_mode(struct iio_dev *indio_dev,
const unsigned long *scan_mask)
{
struct bma180_data *data = iio_priv(indio_dev);
if (data->buff)
devm_kfree(&indio_dev->dev, data->buff);
data->buff = devm_kzalloc(&indio_dev->dev,
indio_dev->scan_bytes, GFP_KERNEL);
if (!data->buff)
return -ENOMEM;
return 0;
}
static const struct iio_info bma180_info = {
.attrs = &bma180_attrs_group,
.read_raw = bma180_read_raw,
.write_raw = bma180_write_raw,
.update_scan_mode = bma180_update_scan_mode,
.driver_module = THIS_MODULE,
};