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

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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>
This commit is contained in:
Vasanthy Kolluri 2010-03-18 16:19:49 +00:00 committed by David S. Miller
parent a55a603dae
commit b6d24eb663
2 changed files with 4 additions and 4 deletions
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4
drivers/net/enic/vnic_rq.c
View File

@ -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);

4
drivers/net/enic/vnic_wq.c
View File

@ -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);