diff options
| author | Jonathan Cameron <jic23@kernel.org> | 2011-12-05 22:18:24 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-12-08 20:11:11 (GMT) |
| commit | 729bbf5404d322e73b5bece968b1ca59d13474de (patch) | |
| tree | d6cda8c4b5a0b04d06f4261fd3dbfdb9bbad54a2 /drivers/staging/iio/adc/ad799x_ring.c | |
| parent | 790d875989845b4b2b82f17d24afc7ac396fce62 (diff) | |
| download | linux-fsl-qoriq-729bbf5404d322e73b5bece968b1ca59d13474de.tar.xz | |
staging:iio:adc:ad799x stop reading from buffer for sysfs accesses
No known use case and makes in kernel interface work more complex.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/iio/adc/ad799x_ring.c')
| -rw-r--r-- | drivers/staging/iio/adc/ad799x_ring.c | 30 |
1 files changed, 0 insertions, 30 deletions
diff --git a/drivers/staging/iio/adc/ad799x_ring.c b/drivers/staging/iio/adc/ad799x_ring.c index 5841c3c..5dded9e 100644 --- a/drivers/staging/iio/adc/ad799x_ring.c +++ b/drivers/staging/iio/adc/ad799x_ring.c @@ -23,36 +23,6 @@ #include "ad799x.h" -int ad799x_single_channel_from_ring(struct iio_dev *indio_dev, int channum) -{ - struct iio_buffer *ring = indio_dev->buffer; - int count = 0, ret; - u16 *ring_data; - - if (!(test_bit(channum, ring->scan_mask))) { - ret = -EBUSY; - goto error_ret; - } - - ring_data = kmalloc(ring->access->get_bytes_per_datum(ring), - GFP_KERNEL); - if (ring_data == NULL) { - ret = -ENOMEM; - goto error_ret; - } - ret = ring->access->read_last(ring, (u8 *) ring_data); - if (ret) - goto error_free_ring_data; - /* Need a count of channels prior to this one */ - count = bitmap_weight(ring->scan_mask, channum); - ret = be16_to_cpu(ring_data[count]); - -error_free_ring_data: - kfree(ring_data); -error_ret: - return ret; -} - /** * ad799x_ring_preenable() setup the parameters of the ring before enabling * |