netdev - [PATCH net-next v2 08/11] net: pcs: lynx: change lynx_pcs

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Message-Id: <E1q6roP-00Cfao-KJ@rmk-PC.armlinux.org.uk>
Date: Wed, 07 Jun 2023 12:58:49 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Ioana Ciornei <ioana.ciornei@....com>,
	Jakub Kicinski <kuba@...nel.org>,
	Madalin Bucur <madalin.bucur@....com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Sean Anderson <sean.anderson@...o.com>
Subject: [PATCH net-next v2 08/11] net: pcs: lynx: change lynx_pcs_create() to
 return error-pointers

Change lynx_pcs_create() to return an error-pointer on failure to
allocate memory, rather than returning NULL. This allows the removal
of the conversion in lynx_pcs_create_fwnode() and
lynx_pcs_create_mdiodev().

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/pcs/pcs-lynx.c | 14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c
index b8c66137e28d..c2d01da40430 100644
--- a/drivers/net/pcs/pcs-lynx.c
+++ b/drivers/net/pcs/pcs-lynx.c
@@ -313,7 +313,7 @@ static struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio)
 
 	lynx = kzalloc(sizeof(*lynx), GFP_KERNEL);
 	if (!lynx)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	mdio_device_get(mdio);
 	lynx->mdio = mdio;
@@ -334,12 +334,6 @@ struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr)
 
 	pcs = lynx_pcs_create(mdio);
 
-	/* Convert failure to create the PCS to an error pointer, so this
-	 * function has a consistent return value strategy.
-	 */
-	if (!pcs)
-		pcs = ERR_PTR(-ENOMEM);
-
 	/* lynx_create() has taken a refcount on the mdiodev if it was
 	 * successful. If lynx_create() fails, this will free the mdio
 	 * device here. In any case, we don't need to hold our reference
@@ -363,12 +357,6 @@ struct phylink_pcs *lynx_pcs_create_fwnode(struct fwnode_handle *node)
 
 	pcs = lynx_pcs_create(mdio);
 
-	/* Convert failure to create the PCS to an error pointer, so this
-	 * function has a consistent return value strategy.
-	 */
-	if (!pcs)
-		pcs = ERR_PTR(-ENOMEM);
-
 	/* lynx_create() has taken a refcount on the mdiodev if it was
 	 * successful. If lynx_create() fails, this will free the mdio
 	 * device here. In any case, we don't need to hold our reference
-- 
2.30.2