staging:iio:trivial sparse related cleanups.

Getting rid of messages that make it harder to spot important issues.
Some code removed that will be useful one day.  Can put it back then.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/accel/sca3000_ring.c

@@ -226,74 +226,6 @@ static IIO_DEVICE_ATTR(75_percent, S_IRUGO | S_IWUSR,
 		       sca3000_set_ring_int,
 		       SCA3000_INT_MASK_RING_THREE_QUARTER);
 
-
-/**
- * sca3000_show_ring_bpse() -sysfs function to query bits per sample from ring
- * @dev: ring buffer device
- * @attr: this device attribute
- * @buf: buffer to write to
- **/
-static ssize_t sca3000_show_ring_bpse(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
-{
-	int len = 0, ret;
-	struct iio_ring_buffer *ring = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = ring->indio_dev;
-	struct sca3000_state *st = iio_priv(indio_dev);
-
-	mutex_lock(&st->lock);
-	ret = sca3000_read_data_short(st, SCA3000_REG_ADDR_MODE, 1);
-	if (ret)
-		goto error_ret;
-	if (st->rx[0] & SCA3000_RING_BUF_8BIT)
-		len = sprintf(buf, "s8/8\n");
-	else
-		len = sprintf(buf, "s11/16\n");
-error_ret:
-	mutex_unlock(&st->lock);
-
-	return ret ? ret : len;
-}
-
-/**
- * sca3000_store_ring_bpse() - bits per scan element
- * @dev: ring buffer device
- * @attr: attribute called from
- * @buf: input from userspace
- * @len: length of input
- **/
-static ssize_t sca3000_store_ring_bpse(struct device *dev,
-				      struct device_attribute *attr,
-				      const char *buf,
-				      size_t len)
-{
-	struct iio_ring_buffer *ring = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = ring->indio_dev;
-	struct sca3000_state *st = iio_priv(indio_dev);
-	int ret;
-
-	mutex_lock(&st->lock);
-
-	ret = sca3000_read_data_short(st, SCA3000_REG_ADDR_MODE, 1);
-	if (ret)
-		goto error_ret;
-	if (sysfs_streq(buf, "s8/8")) {
-		ret = sca3000_write_reg(st, SCA3000_REG_ADDR_MODE,
-					st->rx[0] | SCA3000_RING_BUF_8BIT);
-		st->bpse = 8;
-	} else if (sysfs_streq(buf, "s11/16")) {
-		ret = sca3000_write_reg(st, SCA3000_REG_ADDR_MODE,
-					st->rx[0] & ~SCA3000_RING_BUF_8BIT);
-		st->bpse = 11;
-	} else
-		ret = -EINVAL;
-error_ret:
-	mutex_unlock(&st->lock);
-
-	return ret ? ret : len;
-}
-
 static ssize_t sca3000_show_buffer_scale(struct device *dev,
 					 struct device_attribute *attr,
 					 char *buf)

drivers/staging/iio/adc/ad7150.c

@@ -617,6 +617,8 @@ static IIO_DEV_ATTR_POWERDOWN_TIMER(S_IRUGO | S_IWUSR,
 		ad7150_store_powerdown_timer);
 
 static struct attribute *ad7150_attributes[] = {
+	&iio_dev_attr_available_conversion_modes.dev_attr.attr,
+	&iio_dev_attr_conversion_mode.dev_attr.attr,
 	&iio_dev_attr_available_threshold_modes.dev_attr.attr,
 	&iio_dev_attr_threshold_mode.dev_attr.attr,
 	&iio_dev_attr_ch1_threshold.dev_attr.attr,

drivers/staging/iio/dac/ad5791.c

@@ -381,7 +381,6 @@ static int __devinit ad5791_probe(struct spi_device *spi)
 	if (!IS_ERR(reg_vdd))
 		regulator_put(reg_vdd);
 
-error_ret:
 	return ret;
 }
 

drivers/staging/iio/light/tsl2563.c

@@ -697,7 +697,7 @@ static int __devinit tsl2563_probe(struct i2c_client *client,
 	struct tsl2563_platform_data *pdata = client->dev.platform_data;
 	int err = 0;
 	int ret;
-	u8 id;
+	u8 id = 0;
 
 	indio_dev = iio_allocate_device(sizeof(*chip));
 	if (!indio_dev)

drivers/staging/iio/light/tsl2583.c

@@ -68,7 +68,7 @@ enum {
 	TSL258X_CHIP_UNKNOWN = 0,
 	TSL258X_CHIP_WORKING = 1,
 	TSL258X_CHIP_SUSPENDED = 2
-} TSL258X_CHIP_WORKING_STATUS;
+};
 
 /* Per-device data */
 struct taos_als_info {
@@ -114,7 +114,7 @@ struct taos_lux {
 /* This structure is intentionally large to accommodate updates via sysfs. */
 /* Sized to 11 = max 10 segments + 1 termination segment */
 /* Assumption is is one and only one type of glass used  */
-struct taos_lux taos_device_lux[11] = {
+static struct taos_lux taos_device_lux[11] = {
 	{  9830,  8520, 15729 },
 	{ 12452, 10807, 23344 },
 	{ 14746,  6383, 11705 },

drivers/staging/iio/meter/ade7854.c

@@ -582,7 +582,7 @@ int ade7854_probe(struct iio_dev *indio_dev, struct device *dev)
 	iio_device_unregister(indio_dev);
 error_free_dev:
 	iio_free_device(indio_dev);
-error_ret:
+
 	return ret;
 }
 EXPORT_SYMBOL(ade7854_probe);