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 ae8804a02a6da154f279c7644a7f0b8c0aae2de5..d5eb1fe69c5b2296717fce57bd7ba12dc52b2d88 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;