[PATCH net-next 2/3] LiquidIO: lowmem: do not dereference NULL ptr

[Felix Manlunas]

From: Rick Farrington <ricardo.farring...@cavium.com>

Don't dereference a NULL ptr in octeon_droq_destroy_ring_buffers().

Signed-off-by: Rick Farrington <ricardo.farring...@cavium.com>
Signed-off-by: Satanand Burla <satananda.bu...@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlu...@cavium.com>
---
 drivers/net/ethernet/cavium/liquidio/octeon_droq.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c 
b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
index 07c764d..d868252 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_droq.c
@@ -145,6 +145,8 @@ static void octeon_droq_reset_indices(struct octeon_droq 
*droq)
 
        for (i = 0; i < droq->max_count; i++) {
                pg_info = &droq->recv_buf_list[i].pg_info;
+               if (!pg_info)
+                       continue;
 
                if (pg_info->dma)
                        lio_unmap_ring(oct->pci_dev,
-- 
1.8.3.1