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liquidio: lowmem: do not dereference null ptr

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

Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rick Farrington
2017-07-17 17:51:10 -07:00
committed by David S. Miller
parent 00587f2fa7
commit 689062a18c
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/cavium/liquidio/octeon_droq.c
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@@ -145,6 +145,8 @@ octeon_droq_destroy_ring_buffers(struct octeon_device *oct,
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,