[RFC PATCH] Staging: iio: ade7758: __ade7758_spi_write_reg_8() can be static

[kbuild test robot]

Fixes: c1960999e575 ("Staging: iio: ade7758: Expand buf_lock to cover both buffer")
Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
 ade7758_core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c
index 7f8f8c4..5794ebb 100644
--- a/drivers/staging/iio/meter/ade7758_core.c
+++ b/drivers/staging/iio/meter/ade7758_core.c
@@ -25,7 +25,7 @@
 #include "ade7758.h"
 
 /* Unlocked version of ade7758_spi_write_reg_8 function */
-int __ade7758_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
+static int __ade7758_spi_write_reg_8(struct device *dev, u8 reg_address, u8 val)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct ade7758_state *st = iio_priv(indio_dev);
@@ -101,7 +101,7 @@ static int ade7758_spi_write_reg_24(struct device *dev, u8 reg_address,
 }
 
 /* Unlocked version of ade7758_spi_read_reg_16 function */
-int __ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val)
+static int __ade7758_spi_read_reg_8(struct device *dev, u8 reg_address, u8 *val)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct ade7758_state *st = iio_priv(indio_dev);