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staging: iio: max1363 fix bug due to scan_element directory move.

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The device found passed to the attr functions is that of the ring
    buffer, not the the iio_dev so we need to bounce through one more
    hop to get the right address.

    Reported-by: Michael Hennerich <michael.hennerich@analog.com>
    Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2010-10-07 13:10:21 +01:00 committed by Greg Kroah-Hartman
parent 7aa3baeb97
commit a7861ff082
1 changed files with 4 additions and 2 deletions
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6
drivers/staging/iio/adc/max1363_core.c
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@ -151,7 +151,8 @@ static ssize_t max1363_show_precision_u(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct iio_ring_buffer *ring = dev_get_drvdata(dev);
struct iio_dev *dev_info = ring->indio_dev;
struct max1363_state *st = iio_dev_get_devdata(dev_info);
return sprintf(buf, "u%d/16\n", st->chip_info->bits);
}
@ -160,7 +161,8 @@ static ssize_t max1363_show_precision_s(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct iio_dev *dev_info = dev_get_drvdata(dev);
struct iio_ring_buffer *ring = dev_get_drvdata(dev);
struct iio_dev *dev_info = ring->indio_dev;
struct max1363_state *st = iio_dev_get_devdata(dev_info);
return sprintf(buf, "s%d/16\n", st->chip_info->bits);
}