From 7389266cc9fa4b9b2761785bcc6fba7bbeb8d070 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 29 Jan 2012 11:07:02 +0000 Subject: [PATCH] staging:iio:dac:ad5446 unwind use of is_visible for attrs. Trivial case where no attributes are valid for some parts. Better handled using two iio_info structures and selecting the right one at probe time. Signed-off-by: Jonathan Cameron Acked-by: Lars-Peter Clausen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/dac/ad5446.c | 33 ++++++++++---------------------- 1 file changed, 10 insertions(+), 23 deletions(-) diff --git a/drivers/staging/iio/dac/ad5446.c b/drivers/staging/iio/dac/ad5446.c index 693e7482524c..e439baea3332 100644 --- a/drivers/staging/iio/dac/ad5446.c +++ b/drivers/staging/iio/dac/ad5446.c @@ -149,30 +149,8 @@ static struct attribute *ad5446_attributes[] = { NULL, }; -static umode_t ad5446_attr_is_visible(struct kobject *kobj, - struct attribute *attr, int n) -{ - struct device *dev = container_of(kobj, struct device, kobj); - struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct ad5446_state *st = iio_priv(indio_dev); - - umode_t mode = attr->mode; - - if (!st->chip_info->store_pwr_down && - (attr == &iio_dev_attr_out_voltage0_powerdown.dev_attr.attr || - attr == &iio_dev_attr_out_voltage_powerdown_mode. - dev_attr.attr || - attr == - &iio_const_attr_out_voltage_powerdown_mode_available. - dev_attr.attr)) - mode = 0; - - return mode; -} - static const struct attribute_group ad5446_attribute_group = { .attrs = ad5446_attributes, - .is_visible = ad5446_attr_is_visible, }; #define AD5446_CHANNEL(bits, storage, shift) { \ @@ -321,6 +299,12 @@ static const struct iio_info ad5446_info = { .driver_module = THIS_MODULE, }; +static const struct iio_info ad5446_info_no_pwr_down = { + .read_raw = ad5446_read_raw, + .write_raw = ad5446_write_raw, + .driver_module = THIS_MODULE, +}; + static int __devinit ad5446_probe(struct spi_device *spi) { struct ad5446_state *st; @@ -353,7 +337,10 @@ static int __devinit ad5446_probe(struct spi_device *spi) /* Estabilish that the iio_dev is a child of the spi device */ indio_dev->dev.parent = &spi->dev; indio_dev->name = spi_get_device_id(spi)->name; - indio_dev->info = &ad5446_info; + if (st->chip_info->store_pwr_down) + indio_dev->info = &ad5446_info; + else + indio_dev->info = &ad5446_info_no_pwr_down; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->channels = &st->chip_info->channel; indio_dev->num_channels = 1; -- 2.30.2