net/mvpp2: check pointer before using it

Avoid NULL dereference by checking pointer before using it.

Note that the fixes tag is before the driver was renamed
to mvpp2, so the patch will not apply that far back.

Fixes: 3588aaa68eab ("net/mrvl: fix HIF objects allocation")

Signed-off-by: Tomasz Duszynski <tdu@semihalf.com>

diff --git a/drivers/net/mvpp2/mrvl_ethdev.c b/drivers/net/mvpp2/mrvl_ethdev.c
index ae8804a..d5eb1fe 100644 (file)
--- a/drivers/net/mvpp2/mrvl_ethdev.c
+++ b/drivers/net/mvpp2/mrvl_ethdev.c
@@ -1614,9 +1614,12 @@ mrvl_rx_queue_release(void *rxq)
        if (core_id == LCORE_ID_ANY)
                core_id = 0;
 
+       if (!q)
+               return;
+
        hif = mrvl_get_hif(q->priv, core_id);
 
-       if (!q || !hif)
+       if (!hif)
                return;
 
        tc = q->priv->rxq_map[q->queue_id].tc;