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staging:iio:various cleanup regulator use paths.

Browse Source 
No way iio_device_allocate or iio_device_unregister effected
by regulators so copying tricks not needed.

This is really about regularizing the layout of drivers.

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 2011-08-30 12:41:19 +01:00 committed by Greg Kroah-Hartman
parent 3e39440789
commit 26a54797c1
4 changed files with 75 additions and 89 deletions
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26
drivers/staging/iio/adc/ad7476_core.c
View File

@ -130,7 +130,6 @@ static int __devinit ad7476_probe(struct spi_device *spi)
struct iio_dev *indio_dev;
int ret, voltage_uv = 0;
bool reg_done = false;
struct regulator *reg;
indio_dev = iio_allocate_device(sizeof(*st));
if (indio_dev == NULL) {
@ -138,15 +137,14 @@ static int __devinit ad7476_probe(struct spi_device *spi)
goto error_ret;
}
st = iio_priv(indio_dev);
reg = regulator_get(&spi->dev, "vcc");
if (!IS_ERR(reg)) {
ret = regulator_enable(reg);
st->reg = regulator_get(&spi->dev, "vcc");
if (!IS_ERR(st->reg)) {
ret = regulator_enable(st->reg);
if (ret)
goto error_put_reg;
voltage_uv = regulator_get_voltage(reg);
voltage_uv = regulator_get_voltage(st->reg);
}
st->reg = reg;
st->chip_info =
&ad7476_chip_info_tbl[spi_get_device_id(spi)->driver_data];
@ -197,11 +195,11 @@ error_cleanup_ring:
ad7476_ring_cleanup(indio_dev);
iio_device_unregister(indio_dev);
error_disable_reg:
if (!IS_ERR(reg))
if (!IS_ERR(st->reg))
regulator_disable(st->reg);
error_put_reg:
if (!IS_ERR(reg))
regulator_put(reg);
if (!IS_ERR(st->reg))
regulator_put(st->reg);
if (!reg_done)
iio_free_device(indio_dev);
error_ret:
@ -212,16 +210,14 @@ static int ad7476_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad7476_state *st = iio_priv(indio_dev);
/* copy needed as st will have been freed */
struct regulator *reg = st->reg;
iio_ring_buffer_unregister(indio_dev);
ad7476_ring_cleanup(indio_dev);
iio_device_unregister(indio_dev);
if (!IS_ERR(reg)) {
regulator_disable(reg);
regulator_put(reg);
if (!IS_ERR(st->reg)) {
regulator_disable(st->reg);
regulator_put(st->reg);
}
iio_device_unregister(indio_dev);
return 0;
}

47
drivers/staging/iio/dac/ad5624r_spi.c
View File

@ -228,24 +228,23 @@ static int __devinit ad5624r_probe(struct spi_device *spi)
{
struct ad5624r_state *st;
struct iio_dev *indio_dev;
struct regulator *reg;
int ret, voltage_uv = 0;
reg = regulator_get(&spi->dev, "vcc");
if (!IS_ERR(reg)) {
ret = regulator_enable(reg);
if (ret)
goto error_put_reg;
voltage_uv = regulator_get_voltage(reg);
}
indio_dev = iio_allocate_device(sizeof(*st));
if (indio_dev == NULL) {
ret = -ENOMEM;
goto error_disable_reg;
goto error_ret;
}
st = iio_priv(indio_dev);
st->reg = reg;
st->reg = regulator_get(&spi->dev, "vcc");
if (!IS_ERR(st->reg)) {
ret = regulator_enable(st->reg);
if (ret)
goto error_put_reg;
voltage_uv = regulator_get_voltage(st->reg);
}
spi_set_drvdata(spi, indio_dev);
st->chip_info =
&ad5624r_chip_info_tbl[spi_get_device_id(spi)->driver_data];
@ -265,22 +264,23 @@ static int __devinit ad5624r_probe(struct spi_device *spi)
ret = ad5624r_spi_write(spi, AD5624R_CMD_INTERNAL_REFER_SETUP, 0,
!!voltage_uv, 16);
if (ret)
goto error_free_dev;
goto error_disable_reg;
ret = iio_device_register(indio_dev);
if (ret)
goto error_free_dev;
goto error_disable_reg;
return 0;
error_free_dev:
iio_free_device(indio_dev);
error_disable_reg:
if (!IS_ERR(reg))
regulator_disable(reg);
if (!IS_ERR(st->reg))
regulator_disable(st->reg);
error_put_reg:
if (!IS_ERR(reg))
regulator_put(reg);
if (!IS_ERR(st->reg))
regulator_put(st->reg);
iio_free_device(indio_dev);
error_ret:
return ret;
}
@ -289,13 +289,12 @@ static int __devexit ad5624r_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad5624r_state *st = iio_priv(indio_dev);
struct regulator *reg = st->reg;
iio_device_unregister(indio_dev);
if (!IS_ERR(reg)) {
regulator_disable(reg);
regulator_put(reg);
if (!IS_ERR(st->reg)) {
regulator_disable(st->reg);
regulator_put(st->reg);
}
iio_device_unregister(indio_dev);
return 0;
}

7
drivers/staging/iio/dac/ad5686.c
View File

@ -452,11 +452,10 @@ static int __devexit ad5686_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad5686_state *st = iio_priv(indio_dev);
struct regulator *reg = st->reg;
if (!IS_ERR(reg)) {
regulator_disable(reg);
regulator_put(reg);
if (!IS_ERR(st->reg)) {
regulator_disable(st->reg);
regulator_put(st->reg);
}
iio_device_unregister(indio_dev);

84
drivers/staging/iio/dac/ad5791.c
View File

@ -297,38 +297,37 @@ static int __devinit ad5791_probe(struct spi_device *spi)
{
struct ad5791_platform_data *pdata = spi->dev.platform_data;
struct iio_dev *indio_dev;
struct regulator *reg_vdd, *reg_vss;
struct ad5791_state *st;
int ret, pos_voltage_uv = 0, neg_voltage_uv = 0;
reg_vdd = regulator_get(&spi->dev, "vdd");
if (!IS_ERR(reg_vdd)) {
ret = regulator_enable(reg_vdd);
if (ret)
goto error_put_reg_pos;
pos_voltage_uv = regulator_get_voltage(reg_vdd);
}
reg_vss = regulator_get(&spi->dev, "vss");
if (!IS_ERR(reg_vss)) {
ret = regulator_enable(reg_vss);
if (ret)
goto error_put_reg_neg;
neg_voltage_uv = regulator_get_voltage(reg_vss);
}
indio_dev = iio_allocate_device(sizeof(*st));
if (indio_dev == NULL) {
ret = -ENOMEM;
goto error_disable_reg_neg;
goto error_ret;
}
st = iio_priv(indio_dev);
st->reg_vdd = regulator_get(&spi->dev, "vdd");
if (!IS_ERR(st->reg_vdd)) {
ret = regulator_enable(st->reg_vdd);
if (ret)
goto error_put_reg_pos;
pos_voltage_uv = regulator_get_voltage(st->reg_vdd);
}
st->reg_vss = regulator_get(&spi->dev, "vss");
if (!IS_ERR(st->reg_vss)) {
ret = regulator_enable(st->reg_vss);
if (ret)
goto error_put_reg_neg;
neg_voltage_uv = regulator_get_voltage(st->reg_vss);
}
st->pwr_down = true;
st->spi = spi;
if (!IS_ERR(reg_vss) && !IS_ERR(reg_vdd))
if (!IS_ERR(st->reg_vss) && !IS_ERR(st->reg_vdd))
st->vref_mv = (pos_voltage_uv - neg_voltage_uv) / 1000;
else if (pdata)
st->vref_mv = pdata->vref_pos_mv - pdata->vref_neg_mv;
@ -337,7 +336,7 @@ static int __devinit ad5791_probe(struct spi_device *spi)
ret = ad5791_spi_write(spi, AD5791_ADDR_SW_CTRL, AD5791_SWCTRL_RESET);
if (ret)
goto error_free_dev;
goto error_disable_reg_neg;
st->chip_info =
&ad5791_chip_info_tbl[spi_get_device_id(spi)->driver_data];
@ -350,10 +349,7 @@ static int __devinit ad5791_probe(struct spi_device *spi)
ret = ad5791_spi_write(spi, AD5791_ADDR_CTRL, st->ctrl |
AD5791_CTRL_OPGND | AD5791_CTRL_DACTRI);
if (ret)
goto error_free_dev;
st->reg_vdd = reg_vdd;
st->reg_vss = reg_vss;
goto error_disable_reg_neg;
spi_set_drvdata(spi, indio_dev);
indio_dev->dev.parent = &spi->dev;
@ -362,25 +358,24 @@ static int __devinit ad5791_probe(struct spi_device *spi)
ret = iio_device_register(indio_dev);
if (ret)
goto error_free_dev;
goto error_disable_reg_neg;
return 0;
error_free_dev:
iio_free_device(indio_dev);
error_disable_reg_neg:
if (!IS_ERR(reg_vss))
regulator_disable(reg_vss);
if (!IS_ERR(st->reg_vss))
regulator_disable(st->reg_vss);
error_put_reg_neg:
if (!IS_ERR(reg_vss))
regulator_put(reg_vss);
if (!IS_ERR(st->reg_vss))
regulator_put(st->reg_vss);
if (!IS_ERR(reg_vdd))
regulator_disable(reg_vdd);
if (!IS_ERR(st->reg_vdd))
regulator_disable(st->reg_vdd);
error_put_reg_pos:
if (!IS_ERR(reg_vdd))
regulator_put(reg_vdd);
if (!IS_ERR(st->reg_vdd))
regulator_put(st->reg_vdd);
iio_free_device(indio_dev);
error_ret:
return ret;
}
@ -389,20 +384,17 @@ static int __devexit ad5791_remove(struct spi_device *spi)
{
struct iio_dev *indio_dev = spi_get_drvdata(spi);
struct ad5791_state *st = iio_priv(indio_dev);
struct regulator *reg_vdd = st->reg_vdd;
struct regulator *reg_vss = st->reg_vss;
iio_device_unregister(indio_dev);
if (!IS_ERR(st->reg_vdd)) {
regulator_disable(reg_vdd);
regulator_put(reg_vdd);
regulator_disable(st->reg_vdd);
regulator_put(st->reg_vdd);
}
if (!IS_ERR(st->reg_vss)) {
regulator_disable(reg_vss);
regulator_put(reg_vss);
regulator_disable(st->reg_vss);
regulator_put(st->reg_vss);
}
iio_device_unregister(indio_dev);
return 0;
}