dsa: fix freeing of sparse port allocation
If we have defined a sparse port allocation which is non-contiguous and
contains gaps, the code freeing port_names will just stop when it
encouters a first NULL port_names, which is not right, we should iterate
over all possible number of ports (DSA_MAX_PORTS) until we are done.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index aa2ff58..0eb5d5e 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -350,9 +350,11 @@
for (i = 0; i < pd->nr_chips; i++) {
port_index = 0;
- while (pd->chip[i].port_names &&
- pd->chip[i].port_names[++port_index])
- kfree(pd->chip[i].port_names[port_index]);
+ while (port_index < DSA_MAX_PORTS) {
+ if (pd->chip[i].port_names[port_index])
+ kfree(pd->chip[i].port_names[port_index]);
+ port_index++;
+ }
kfree(pd->chip[i].rtable);
}
kfree(pd->chip);