diff options
author | Michael Hennerich <michael.hennerich@analog.com> | 2011-05-18 14:42:25 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-05-19 16:15:03 -0700 |
commit | cc4a48e4cf92776656633aeb895520dc53893f32 (patch) | |
tree | a26a9edacffcf574a2c7e7b07a5427259a682a6e /drivers/staging/iio/adc/ad7298_core.c | |
parent | 5565a450248d827afa949aab157873d4b9be329e (diff) |
staging:iio:adc:AD7298: Use private data space from iio_allocate_device
Use private data space from iio_allocate_device
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/iio/adc/ad7298_core.c')
-rw-r--r-- | drivers/staging/iio/adc/ad7298_core.c | 72 |
1 files changed, 35 insertions, 37 deletions
diff --git a/drivers/staging/iio/adc/ad7298_core.c b/drivers/staging/iio/adc/ad7298_core.c index 35a30ae9bbc6..83b3d158353f 100644 --- a/drivers/staging/iio/adc/ad7298_core.c +++ b/drivers/staging/iio/adc/ad7298_core.c @@ -116,7 +116,7 @@ static int ad7298_read_raw(struct iio_dev *dev_info, long m) { int ret; - struct ad7298_state *st = dev_info->dev_data; + struct ad7298_state *st = iio_priv(dev_info); unsigned int scale_uv; switch (m) { @@ -126,7 +126,8 @@ static int ad7298_read_raw(struct iio_dev *dev_info, if (chan->address == AD7298_CH_TEMP) ret = -ENODEV; else - ret = ad7298_scan_from_ring(st, chan->address); + ret = ad7298_scan_from_ring(dev_info, + chan->address); } else { if (chan->address == AD7298_CH_TEMP) ret = ad7298_scan_temp(st, val); @@ -159,13 +160,13 @@ static int __devinit ad7298_probe(struct spi_device *spi) { struct ad7298_platform_data *pdata = spi->dev.platform_data; struct ad7298_state *st; - int ret; + int ret, regdone = 0; + struct iio_dev *indio_dev = iio_allocate_device(sizeof(*st)); - st = kzalloc(sizeof(*st), GFP_KERNEL); - if (st == NULL) { - ret = -ENOMEM; - goto error_ret; - } + if (indio_dev == NULL) + return -ENOMEM; + + st = iio_priv(indio_dev); st->reg = regulator_get(&spi->dev, "vcc"); if (!IS_ERR(st->reg)) { @@ -174,24 +175,17 @@ static int __devinit ad7298_probe(struct spi_device *spi) goto error_put_reg; } - spi_set_drvdata(spi, st); + spi_set_drvdata(spi, indio_dev); st->spi = spi; - st->indio_dev = iio_allocate_device(0); - if (st->indio_dev == NULL) { - ret = -ENOMEM; - goto error_disable_reg; - } - - st->indio_dev->name = spi_get_device_id(spi)->name; - st->indio_dev->dev.parent = &spi->dev; - st->indio_dev->dev_data = (void *)(st); - st->indio_dev->driver_module = THIS_MODULE; - st->indio_dev->modes = INDIO_DIRECT_MODE; - st->indio_dev->channels = ad7298_channels; - st->indio_dev->num_channels = ARRAY_SIZE(ad7298_channels); - st->indio_dev->read_raw = &ad7298_read_raw; + indio_dev->name = spi_get_device_id(spi)->name; + indio_dev->dev.parent = &spi->dev; + indio_dev->driver_module = THIS_MODULE; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = ad7298_channels; + indio_dev->num_channels = ARRAY_SIZE(ad7298_channels); + indio_dev->read_raw = &ad7298_read_raw; /* Setup default message */ @@ -216,41 +210,44 @@ static int __devinit ad7298_probe(struct spi_device *spi) st->int_vref_mv = AD7298_INTREF_mV; } - ret = ad7298_register_ring_funcs_and_init(st->indio_dev); + ret = ad7298_register_ring_funcs_and_init(indio_dev); if (ret) - goto error_free_device; + goto error_disable_reg; - ret = iio_device_register(st->indio_dev); + ret = iio_device_register(indio_dev); if (ret) - goto error_free_device; + goto error_disable_reg; + regdone = 1; - ret = iio_ring_buffer_register_ex(st->indio_dev->ring, 0, + ret = iio_ring_buffer_register_ex(indio_dev->ring, 0, &ad7298_channels[1], /* skip temp0 */ ARRAY_SIZE(ad7298_channels) - 1); if (ret) goto error_cleanup_ring; + return 0; error_cleanup_ring: - ad7298_ring_cleanup(st->indio_dev); - iio_device_unregister(st->indio_dev); -error_free_device: - iio_free_device(st->indio_dev); + ad7298_ring_cleanup(indio_dev); error_disable_reg: if (!IS_ERR(st->reg)) regulator_disable(st->reg); error_put_reg: if (!IS_ERR(st->reg)) regulator_put(st->reg); - kfree(st); -error_ret: + + if (regdone) + iio_device_unregister(indio_dev); + else + iio_free_device(indio_dev); + return ret; } static int __devexit ad7298_remove(struct spi_device *spi) { - struct ad7298_state *st = spi_get_drvdata(spi); - struct iio_dev *indio_dev = st->indio_dev; + struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ad7298_state *st = iio_priv(indio_dev); iio_ring_buffer_unregister(indio_dev->ring); ad7298_ring_cleanup(indio_dev); @@ -259,7 +256,8 @@ static int __devexit ad7298_remove(struct spi_device *spi) regulator_disable(st->reg); regulator_put(st->reg); } - kfree(st); + iio_device_unregister(indio_dev); + return 0; } |