From f39e086adcbdb953922fb2856d2745642432fca9 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Wed, 18 May 2011 14:41:51 +0100 Subject: [PATCH] staging:iio:adc:ad7887: Use private data space from iio_allocate_device Signed-off-by: Michael Hennerich Acked-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/adc/ad7887.h | 1 - drivers/staging/iio/adc/ad7887_core.c | 83 ++++++++++++--------------- drivers/staging/iio/adc/ad7887_ring.c | 5 +- 3 files changed, 37 insertions(+), 52 deletions(-) diff --git a/drivers/staging/iio/adc/ad7887.h b/drivers/staging/iio/adc/ad7887.h index a0c3742a66ed..837046c7b894 100644 --- a/drivers/staging/iio/adc/ad7887.h +++ b/drivers/staging/iio/adc/ad7887.h @@ -60,7 +60,6 @@ struct ad7887_chip_info { }; struct ad7887_state { - struct iio_dev *indio_dev; struct spi_device *spi; const struct ad7887_chip_info *chip_info; struct regulator *reg; diff --git a/drivers/staging/iio/adc/ad7887_core.c b/drivers/staging/iio/adc/ad7887_core.c index f394215c7f47..6773fe1bf059 100644 --- a/drivers/staging/iio/adc/ad7887_core.c +++ b/drivers/staging/iio/adc/ad7887_core.c @@ -6,13 +6,10 @@ * Licensed under the GPL-2. */ -#include -#include #include #include #include #include -#include #include #include #include @@ -90,13 +87,13 @@ static int __devinit ad7887_probe(struct spi_device *spi) { struct ad7887_platform_data *pdata = spi->dev.platform_data; struct ad7887_state *st; - int ret, voltage_uv = 0; + int ret, voltage_uv = 0, 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)) { @@ -110,26 +107,16 @@ static int __devinit ad7887_probe(struct spi_device *spi) st->chip_info = &ad7887_chip_info_tbl[spi_get_device_id(spi)->driver_data]; - 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; - } - /* Estabilish that the iio_dev is a child of the spi device */ - st->indio_dev->dev.parent = &spi->dev; - st->indio_dev->name = spi_get_device_id(spi)->name; - st->indio_dev->dev_data = (void *)(st); - st->indio_dev->channels = st->chip_info->channel; - st->indio_dev->num_channels = 3; - st->indio_dev->read_raw = &ad7887_read_raw; - - st->indio_dev->driver_module = THIS_MODULE; - st->indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->dev.parent = &spi->dev; + indio_dev->name = spi_get_device_id(spi)->name; + indio_dev->dev_data = (void *)(st); + indio_dev->read_raw = &ad7887_read_raw; + indio_dev->driver_module = THIS_MODULE; + indio_dev->modes = INDIO_DIRECT_MODE; /* Setup default message */ @@ -180,8 +167,8 @@ static int __devinit ad7887_probe(struct spi_device *spi) else dev_warn(&spi->dev, "reference voltage unspecified\n"); - st->indio_dev->channels = st->chip_info->channel; - st->indio_dev->num_channels = 3; + indio_dev->channels = st->chip_info->channel; + indio_dev->num_channels = 3; } else { if (pdata && pdata->vref_mv) st->int_vref_mv = pdata->vref_mv; @@ -190,53 +177,55 @@ static int __devinit ad7887_probe(struct spi_device *spi) else dev_warn(&spi->dev, "reference voltage unspecified\n"); - st->indio_dev->channels = &st->chip_info->channel[1]; - st->indio_dev->num_channels = 2; + indio_dev->channels = &st->chip_info->channel[1]; + indio_dev->num_channels = 2; } - ret = ad7887_register_ring_funcs_and_init(st->indio_dev); + ret = ad7887_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, - st->indio_dev->channels, - st->indio_dev->num_channels); + ret = iio_ring_buffer_register_ex(indio_dev->ring, 0, + indio_dev->channels, + indio_dev->num_channels); if (ret) goto error_cleanup_ring; return 0; error_cleanup_ring: - ad7887_ring_cleanup(st->indio_dev); - iio_device_unregister(st->indio_dev); -error_free_device: - iio_free_device(st->indio_dev); + ad7887_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 ad7887_remove(struct spi_device *spi) { - struct ad7887_state *st = spi_get_drvdata(spi); - struct iio_dev *indio_dev = st->indio_dev; + struct iio_dev *indio_dev = spi_get_drvdata(spi); + struct ad7887_state *st = iio_priv(indio_dev); + iio_ring_buffer_unregister(indio_dev->ring); ad7887_ring_cleanup(indio_dev); - iio_device_unregister(indio_dev); if (!IS_ERR(st->reg)) { regulator_disable(st->reg); regulator_put(st->reg); } - kfree(st); + iio_device_unregister(indio_dev); + return 0; } diff --git a/drivers/staging/iio/adc/ad7887_ring.c b/drivers/staging/iio/adc/ad7887_ring.c index fa9ea731143b..113e97ea1c28 100644 --- a/drivers/staging/iio/adc/ad7887_ring.c +++ b/drivers/staging/iio/adc/ad7887_ring.c @@ -8,13 +8,10 @@ */ #include -#include -#include #include #include #include #include -#include #include #include "../iio.h" @@ -27,7 +24,7 @@ int ad7887_scan_from_ring(struct ad7887_state *st, long mask) { - struct iio_ring_buffer *ring = st->indio_dev->ring; + struct iio_ring_buffer *ring = iio_priv_to_dev(st)->ring; int count = 0, ret; u16 *ring_data; -- 2.30.2