From: Haiyang Zhang Date: Tue, 24 Aug 2021 16:46:01 +0000 (-0700) Subject: net: mana: Add WARN_ON_ONCE in case of CQE read overflow X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c1a3e9f98dde4782290d2c4871e42b7e76ad5593;p=linux.git net: mana: Add WARN_ON_ONCE in case of CQE read overflow This is not an expected case normally. Add WARN_ON_ONCE in case of CQE read overflow, instead of failing silently. Signed-off-by: Haiyang Zhang Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c index 798099d642027..cee75b561f59d 100644 --- a/drivers/net/ethernet/microsoft/mana/gdma_main.c +++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c @@ -1093,7 +1093,7 @@ static int mana_gd_read_cqe(struct gdma_queue *cq, struct gdma_comp *comp) new_bits = (cq->head / num_cqe) & GDMA_CQE_OWNER_MASK; /* Return -1 if overflow detected. */ - if (owner_bits != new_bits) + if (WARN_ON_ONCE(owner_bits != new_bits)) return -1; comp->wq_num = cqe->cqe_info.wq_num;