[PATCH] i2c: gxp: return proper error on address NACK

[Wolfram Sang <wsa@kernel.org>]

According to Documentation/i2c/fault-codes.rst, NACK after sending an
address should be -ENXIO.

Signed-off-by: Wolfram Sang <wsa@kernel.org>
---

Depends on: "[PATCH] i2c: gxp: remove "empty" switch statement"

 drivers/i2c/busses/i2c-gxp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/i2c/busses/i2c-gxp.c b/drivers/i2c/busses/i2c-gxp.c
index 352dedf6292f..fda7809e72ba 100644
--- a/drivers/i2c/busses/i2c-gxp.c
+++ b/drivers/i2c/busses/i2c-gxp.c
@@ -129,8 +129,10 @@ static int gxp_i2c_master_xfer(struct i2c_adapter *adapter,
 	if (time_left == 0)
 		return -ETIMEDOUT;
 
-	if (drvdata->state == GXP_I2C_ADDR_NACK ||
-	    drvdata->state == GXP_I2C_DATA_NACK)
+	if (drvdata->state == GXP_I2C_ADDR_NACK)
+		return -ENXIO;
+
+	if (drvdata->state == GXP_I2C_DATA_NACK)
 		return -EIO;
 
 	return ret;
-- 
2.30.2