linux-kernel - [PATCH] niu: read property length only if we use it

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Date:   Thu, 29 Jul 2021 09:43:54 +0200
From:   Martin Kaiser <martin@...ser.cx>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Martin Kaiser <martin@...ser.cx>
Subject: [PATCH] niu: read property length only if we use it

In three places, the driver calls of_get_property and reads the property
length although the length is not used. Update the calls to not request
the length.

Signed-off-by: Martin Kaiser <martin@...ser.cx>
---
 drivers/net/ethernet/sun/niu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c
index 860644d182ab..f37c235d9634 100644
--- a/drivers/net/ethernet/sun/niu.c
+++ b/drivers/net/ethernet/sun/niu.c
@@ -9208,7 +9208,7 @@ static int niu_get_of_props(struct niu *np)
 	else
 		dp = pci_device_to_OF_node(np->pdev);
 
-	phy_type = of_get_property(dp, "phy-type", &prop_len);
+	phy_type = of_get_property(dp, "phy-type", NULL);
 	if (!phy_type) {
 		netdev_err(dev, "%pOF: OF node lacks phy-type property\n", dp);
 		return -EINVAL;
@@ -9242,12 +9242,12 @@ static int niu_get_of_props(struct niu *np)
 		return -EINVAL;
 	}
 
-	model = of_get_property(dp, "model", &prop_len);
+	model = of_get_property(dp, "model", NULL);
 
 	if (model)
 		strcpy(np->vpd.model, model);
 
-	if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
+	if (of_find_property(dp, "hot-swappable-phy", NULL)) {
 		np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
 			NIU_FLAGS_HOTPLUG_PHY);
 	}
-- 
2.20.1