enic: Bug Fix: Fix timeout for hardware Tx and Rx queue disable operations

The timeout for hardware Tx and Rx queue disable operations is increased to
work-around an erratum for "unnamed" chipset where a DMA completion may take
upto 10ms. We have to wait atleast this long for hardware to signal that Tx
and Rx queues are quiesced.

Signed-off-by: Scott Feldman <scofeldm@cisco.com>
Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com>
Signed-off-by: Roopa Prabhu <roprabhu@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 4 deletions

diff --git a/drivers/net/enic/vnic_rq.c b/drivers/net/enic/vnic_rq.c
index 75583978a5e5..7bcd90373487 100644
--- a/drivers/net/enic/vnic_rq.c
+++ b/drivers/net/enic/vnic_rq.c
@@ -167,10 +167,10 @@ int vnic_rq_disable(struct vnic_rq *rq)
         iowrite32(0, &rq->ctrl->enable);
 
         /* Wait for HW to ACK disable request */
-        for (wait = 0; wait < 100; wait++) {
+        for (wait = 0; wait < 1000; wait++) {
                 if (!(ioread32(&rq->ctrl->running)))
                         return 0;
-                udelay(1);
+                udelay(10);
         }
 
         printk(KERN_ERR "Failed to disable RQ[%d]\n", rq->index);
diff --git a/drivers/net/enic/vnic_wq.c b/drivers/net/enic/vnic_wq.c
index d2e00e51b7b5..44fc3234d585 100644
--- a/drivers/net/enic/vnic_wq.c
+++ b/drivers/net/enic/vnic_wq.c
@@ -160,10 +160,10 @@ int vnic_wq_disable(struct vnic_wq *wq)
         iowrite32(0, &wq->ctrl->enable);
 
         /* Wait for HW to ACK disable request */
-        for (wait = 0; wait < 100; wait++) {
+        for (wait = 0; wait < 1000; wait++) {
                 if (!(ioread32(&wq->ctrl->running)))
                         return 0;
-                udelay(1);
+                udelay(10);
         }
 
         printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index);