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authorVivien Didelot <vivien.didelot@savoirfairelinux.com>2017-10-24 16:37:19 -0400
committerDavid S. Miller <davem@davemloft.net>2017-10-25 10:49:14 +0900
commit3eb8feeb1708c7dbfd2e97df92a2a407c116606e (patch)
tree0c922fe5e47208525173a35c91f2743385df3780 /net/dsa
parent829385f08ae99740276cbd46c9db29764c519211 (diff)
downloadlinux-3eb8feeb1708c7dbfd2e97df92a2a407c116606e.tar.bz2
net: dsa: check master device before put
In the case of pdata, the dsa_cpu_parse function calls dev_put() before making sure it isn't NULL. Fix this. Fixes: 71e0bbde0d88 ("net: dsa: Add support for platform data") Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa')
-rw-r--r--net/dsa/dsa2.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 873af0108e24..045d8a176279 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -496,14 +496,15 @@ static int dsa_cpu_parse(struct dsa_port *port, u32 index,
if (!ethernet)
return -EINVAL;
ethernet_dev = of_find_net_device_by_node(ethernet);
+ if (!ethernet_dev)
+ return -EPROBE_DEFER;
} else {
ethernet_dev = dsa_dev_to_net_device(ds->cd->netdev[index]);
+ if (!ethernet_dev)
+ return -EPROBE_DEFER;
dev_put(ethernet_dev);
}
- if (!ethernet_dev)
- return -EPROBE_DEFER;
-
if (!dst->cpu_dp) {
dst->cpu_dp = port;
dst->cpu_dp->netdev = ethernet_dev;