From 5f64a7dbf593c2317f132c8252d04cdfe8d4b104 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Mon, 25 Mar 2013 05:03:40 +0000 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- net/dsa/dsa.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index aa2ff583b7ed..0eb5d5e76dfb 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -350,9 +350,11 @@ static void dsa_of_free_platform_data(struct dsa_platform_data *pd) 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);