staging: iio: adis16400 clean out some unused code

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

diff --git a/drivers/staging/iio/imu/adis16400.h b/drivers/staging/iio/imu/adis16400.h
index a8062f60579756f9a7f1f08c3c3d18cadf3020f9..5a69a7ab91ce60de2570e4451a9ee2146f617091 100644 (file)
--- a/drivers/staging/iio/imu/adis16400.h
+++ b/drivers/staging/iio/imu/adis16400.h
@@ -147,21 +147,12 @@ struct adis16400_state {
        struct mutex                    buf_lock;
 };
 
-int adis16400_spi_write_reg_8(struct device *dev,
-                             u8 reg_address,
-                             u8 val);
-
 int adis16400_spi_read_burst(struct device *dev, u8 *rx);
 
-int adis16400_spi_read_sequence(struct device *dev,
-                                     u8 *tx, u8 *rx, int num);
-
 int adis16400_set_irq(struct device *dev, bool enable);
 
 int adis16400_reset(struct device *dev);
 
-int adis16400_stop_device(struct device *dev);
-
 int adis16400_check_status(struct device *dev);
 
 #ifdef CONFIG_IIO_RING_BUFFER

diff --git a/drivers/staging/iio/imu/adis16400_core.c b/drivers/staging/iio/imu/adis16400_core.c
index 868c52658a5a993294572b1c618e79f1c0697982..e69e2ce47da3e20706e9e1ca76b3ca08b9b9eb2d 100644 (file)
--- a/drivers/staging/iio/imu/adis16400_core.c
+++ b/drivers/staging/iio/imu/adis16400_core.c
@@ -47,7 +47,7 @@
  * @reg_address: the address of the register to be written
  * @val: the value to write
  **/
-int adis16400_spi_write_reg_8(struct device *dev,
+static int adis16400_spi_write_reg_8(struct device *dev,
                u8 reg_address,
                u8 val)
 {
@@ -209,55 +209,6 @@ int adis16400_spi_read_burst(struct device *dev, u8 *rx)
        return ret;
 }
 
-/**
- * adis16400_spi_read_sequence() - read a sequence of 16-bit registers
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
- * @tx: register addresses in bytes 0,2,4,6... (min size is 2*num bytes)
- * @rx: somewhere to pass back the value read (min size is 2*num bytes)
- **/
-int adis16400_spi_read_sequence(struct device *dev,
-               u8 *tx, u8 *rx, int num)
-{
-       struct spi_message msg;
-       struct spi_transfer *xfers;
-       struct iio_dev *indio_dev = dev_get_drvdata(dev);
-       struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
-       int ret, i;
-
-       xfers = kzalloc(num + 1, GFP_KERNEL);
-       if (xfers == NULL) {
-               dev_err(&st->us->dev, "memory alloc failed");
-               ret = -ENOMEM;
-               goto error_ret;
-       }
-
-       /* tx: |add1|addr2|addr3|...|addrN |zero|
-        * rx: |zero|res1 |res2 |...|resN-1|resN| */
-       spi_message_init(&msg);
-       for (i = 0; i < num + 1; i++) {
-               if (i > 0)
-                       xfers[i].rx_buf = st->rx + 2*(i - 1);
-               if (i < num)
-                       xfers[i].tx_buf = st->tx + 2*i;
-               xfers[i].bits_per_word = 8;
-               xfers[i].len = 2;
-               xfers[i].cs_change = 1;
-               spi_message_add_tail(&xfers[i], &msg);
-       }
-
-       mutex_lock(&st->buf_lock);
-
-       ret = spi_sync(st->us, &msg);
-       if (ret)
-               dev_err(&st->us->dev, "problem when reading sequence");
-
-       mutex_unlock(&st->buf_lock);
-       kfree(xfers);
-
-error_ret:
-       return ret;
-}
-
 static ssize_t adis16400_spi_read_signed(struct device *dev,
                struct device_attribute *attr,
                char *buf,
@@ -450,7 +401,7 @@ int adis16400_reset(struct device *dev)
 }
 
 /* Power down the device */
-int adis16400_stop_device(struct device *dev)
+static int adis16400_stop_device(struct device *dev)
 {
        int ret;
        u16 val = ADIS16400_SLP_CNT_POWER_OFF;
@@ -462,7 +413,7 @@ int adis16400_stop_device(struct device *dev)
        return ret;
 }
 
-int adis16400_self_test(struct device *dev)
+static int adis16400_self_test(struct device *dev)
 {
        int ret;
        ret = adis16400_spi_write_reg_16(dev,