From: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Date: Tue, 10 Aug 2021 08:58:12 +0000 (+0800)
Subject: net: pcs: xpcs: fix error handling on failed to allocate memory
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2cad5d2ed1b47eded5a2f2372c2a94bb065a8f97;p=linux.git

net: pcs: xpcs: fix error handling on failed to allocate memory

Drivers such as sja1105 and stmmac that call xpcs_create() expects an
error returned by the pcs-xpcs module, but this was not the case on
failed to allocate memory.

Fixed this by returning an -ENOMEM instead of a NULL pointer.

Fixes: 3ad1d171548e ("net: dsa: sja1105: migrate to xpcs for SGMII")
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210810085812.1808466-1-vee.khee.wong@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
index 63fda3fc40aac..4bd61339823ce 100644
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -1089,7 +1089,7 @@ struct dw_xpcs *xpcs_create(struct mdio_device *mdiodev,
 
 	xpcs = kzalloc(sizeof(*xpcs), GFP_KERNEL);
 	if (!xpcs)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	xpcs->mdiodev = mdiodev;