[PATCH 5.10 062/104] net: hdlc_x25: Return meaningful error code in x25_open

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

From: Xie He <xie.he.0141@xxxxxxxxx>

[ Upstream commit 81b8be68ef8e8915d0cc6cedd2ac425c74a24813 ]

It's not meaningful to pass on LAPB error codes to HDLC code or other
parts of the system, because they will not understand the error codes.

Instead, use system-wide recognizable error codes.

Fixes: f362e5fe0f1f ("wan/hdlc_x25: make lapb params configurable")
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Xie He <xie.he.0141@xxxxxxxxx>
Acked-by: Martin Schiller <ms@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210203071541.86138-1-xie.he.0141@xxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wan/hdlc_x25.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/wan/hdlc_x25.c b/drivers/net/wan/hdlc_x25.c
index f52b9fed05931..34bc53facd11c 100644
--- a/drivers/net/wan/hdlc_x25.c
+++ b/drivers/net/wan/hdlc_x25.c
@@ -171,11 +171,11 @@ static int x25_open(struct net_device *dev)
 
 	result = lapb_register(dev, &cb);
 	if (result != LAPB_OK)
-		return result;
+		return -ENOMEM;
 
 	result = lapb_getparms(dev, &params);
 	if (result != LAPB_OK)
-		return result;
+		return -EINVAL;
 
 	if (state(hdlc)->settings.dce)
 		params.mode = params.mode | LAPB_DCE;
@@ -190,7 +190,7 @@ static int x25_open(struct net_device *dev)
 
 	result = lapb_setparms(dev, &params);
 	if (result != LAPB_OK)
-		return result;
+		return -EINVAL;
 
 	return 0;
 }
-- 
2.27.0