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authorVasanthy Kolluri <vkolluri@cisco.com>2010-03-18 12:19:49 -0400
committerDavid S. Miller <davem@davemloft.net>2010-03-19 00:22:48 -0400
commitb6d24eb663cdf4af9c08b37ad2e31056c5eb2561 (patch)
tree74feb13f2f56a6e58660553a935498614f401a55 /drivers/net/enic/vnic_wq.c
parenta55a603dae47a1ea4fbfad3a3a428ea7a0900ab6 (diff)
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>
Diffstat (limited to 'drivers/net/enic/vnic_wq.c')
-rw-r--r--drivers/net/enic/vnic_wq.c4
1 files changed, 2 insertions, 2 deletions
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)
160 iowrite32(0, &wq->ctrl->enable); 160 iowrite32(0, &wq->ctrl->enable);
161 161
162 /* Wait for HW to ACK disable request */ 162 /* Wait for HW to ACK disable request */
163 for (wait = 0; wait < 100; wait++) { 163 for (wait = 0; wait < 1000; wait++) {
164 if (!(ioread32(&wq->ctrl->running))) 164 if (!(ioread32(&wq->ctrl->running)))
165 return 0; 165 return 0;
166 udelay(1); 166 udelay(10);
167 } 167 }
168 168
169 printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index); 169 printk(KERN_ERR "Failed to disable WQ[%d]\n", wq->index);