[RFC PATCH] HID: mcp2221: mcp_smbus_xfer() can be static

[kbuild test robot]

Fixes: 38f8a303aca6 ("HID: mcp2221: add usb to i2c-smbus host bridge driver")
Signed-off-by: kbuild test robot <lkp@xxxxxxxxx>
---
 hid-mcp2221.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hid/hid-mcp2221.c b/drivers/hid/hid-mcp2221.c
index 9897599a868bf..b0e7ea0d267d0 100644
--- a/drivers/hid/hid-mcp2221.c
+++ b/drivers/hid/hid-mcp2221.c
@@ -394,7 +394,7 @@ static int mcp_smbus_write(struct mcp2221 *mcp, u16 addr,
 	return ret;
 }
 
-int mcp_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
+static int mcp_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
 				unsigned short flags, char read_write,
 				u8 command, int size,
 				union i2c_smbus_data *data)