From ed6f1353e195b4432e251667b2d84d766d07c79c Mon Sep 17 00:00:00 2001 From: Amit Kumar Salecha Date: Thu, 22 Apr 2010 02:51:40 +0000 Subject: [PATCH] qlcnic: fix rcv buffer leak Rcv producer value should be read in spin-lock. Signed-off-by: Amit Kumar Salecha Signed-off-by: David S. Miller --- drivers/net/qlcnic/qlcnic_init.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/qlcnic/qlcnic_init.c b/drivers/net/qlcnic/qlcnic_init.c index 9ef9f58f84dd..1b621ca13e25 100644 --- a/drivers/net/qlcnic/qlcnic_init.c +++ b/drivers/net/qlcnic/qlcnic_init.c @@ -1554,9 +1554,10 @@ qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid, int producer, count = 0; struct list_head *head; + spin_lock(&rds_ring->lock); + producer = rds_ring->producer; - spin_lock(&rds_ring->lock); head = &rds_ring->free_list; while (!list_empty(head)) { @@ -1578,13 +1579,13 @@ qlcnic_post_rx_buffers(struct qlcnic_adapter *adapter, u32 ringid, producer = get_next_index(producer, rds_ring->num_desc); } - spin_unlock(&rds_ring->lock); if (count) { rds_ring->producer = producer; writel((producer-1) & (rds_ring->num_desc-1), rds_ring->crb_rcv_producer); } + spin_unlock(&rds_ring->lock); } static void @@ -1596,10 +1597,11 @@ qlcnic_post_rx_buffers_nodb(struct qlcnic_adapter *adapter, int producer, count = 0; struct list_head *head; - producer = rds_ring->producer; if (!spin_trylock(&rds_ring->lock)) return; + producer = rds_ring->producer; + head = &rds_ring->free_list; while (!list_empty(head)) { -- 2.20.1