netdev - [RFC PATCH net-next 5/9] ppp: use the correct function to check for netdev name collision

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Date:   Tue, 28 Sep 2021 14:54:56 +0200
From:   Antoine Tenart <atenart@...nel.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     Antoine Tenart <atenart@...nel.org>, pabeni@...hat.com,
        gregkh@...uxfoundation.org, ebiederm@...ssion.com,
        stephen@...workplumber.org, herbert@...dor.apana.org.au,
        juri.lelli@...hat.com, netdev@...r.kernel.org
Subject: [RFC PATCH net-next 5/9] ppp: use the correct function to check for netdev name collision

netdev_name_node_lookup and __dev_get_by_name have two distinct aims,
one helps in name collision detection, while the other is used to
retrieve a reference to a net device from its name. Here in
ppp_unit_register we want to check for a name collision, hence use the
correct function.

(The behaviour of the two functions was similar but will change in the
next commits).

Signed-off-by: Antoine Tenart <atenart@...nel.org>
---
 drivers/net/ppp/ppp_generic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index fb52cd175b45..c3e2f4da9949 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -1161,7 +1161,7 @@ static int ppp_unit_register(struct ppp *ppp, int unit, bool ifname_is_set)
 		if (!ifname_is_set) {
 			while (1) {
 				snprintf(ppp->dev->name, IFNAMSIZ, "ppp%i", ret);
-				if (!__dev_get_by_name(ppp->ppp_net, ppp->dev->name))
+				if (!netdev_name_node_lookup(ppp->ppp_net, ppp->dev->name))
 					break;
 				unit_put(&pn->units_idr, ret);
 				ret = unit_get(&pn->units_idr, ppp, ret + 1);
-- 
2.31.1