[PATCH] board: gw_ventana: gsc: fix GSC read/write functions

[Tim Harvey]

commit 7c84319af9c7 ("dm: gpio: Correct use of -ENODEV in drivers")
changed the return code for an I2C NAK from -ENODEV to -EREMOTEIO.

Update the gsc_i2c_read and gsc_i2c_write functions for this change
to properly retry the transaction on a NAK meaning the GSC is busy.

Fixes: 7c84319af9c7 ("dm: gpio: Correct use of -ENODEV in drivers")
Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
 board/gateworks/gw_ventana/gsc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/board/gateworks/gw_ventana/gsc.c b/board/gateworks/gw_ventana/gsc.c
index 324e5dbed2c8..a5d6de7e0e8e 100644
--- a/board/gateworks/gw_ventana/gsc.c
+++ b/board/gateworks/gw_ventana/gsc.c
@@ -41,7 +41,7 @@ int gsc_i2c_read(uchar chip, uint addr, int alen, uchar *buf, int len)
 			break;
 		debug("%s: 0x%02x 0x%02x retry%d: %d\n", __func__, chip, addr,
 		      n, ret);
-		if (ret != -ENODEV)
+		if (ret != -EREMOTEIO)
 			break;
 		mdelay(10);
 	}
@@ -60,7 +60,7 @@ int gsc_i2c_write(uchar chip, uint addr, int alen, uchar *buf, int len)
 			break;
 		debug("%s: 0x%02x 0x%02x retry%d: %d\n", __func__, chip, addr,
 		      n, ret);
-		if (ret != -ENODEV)
+		if (ret != -EREMOTEIO)
 			break;
 		mdelay(10);
 	}
-- 
2.17.1