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authorAmit Kumar Salecha <amit.salecha@qlogic.com>2010-04-22 06:51:40 +0400
committerDavid S. Miller <davem@davemloft.net>2010-04-23 02:28:30 +0400
commited6f1353e195b4432e251667b2d84d766d07c79c (patch)
treec3431005c6e541dd65f23a8af7a7eb16b3ee4d8f /drivers/net/qlcnic/qlcnic_init.c
parentade91f8ec92da43b62b0efaa854cfd4b5ec0c0c9 (diff)
downloadlinux-ed6f1353e195b4432e251667b2d84d766d07c79c.tar.xz
qlcnic: fix rcv buffer leak
Rcv producer value should be read in spin-lock. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/qlcnic/qlcnic_init.c')
-rw-r--r--drivers/net/qlcnic/qlcnic_init.c8
1 files 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)) {