hpilo: reduce frequency of IO operations

Change hpilo open and close logic to spin for 10usec between checking device,
rather than every usec.

Because the loop is coded to take up to 10ms, it seemed prudent to
increase the interval between polling the device, to reduce the load on
the system and allow more other work to happen.

Signed-off-by: David Altobelli <david.altobelli@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/misc/hpilo.c b/drivers/misc/hpilo.c
index cf991850f01b..880ccf39e23b 100644
--- a/drivers/misc/hpilo.c
+++ b/drivers/misc/hpilo.c
@@ -209,7 +209,7 @@ static void ilo_ccb_close(struct pci_dev *pdev, struct ccb_data *data)
         /* give iLO some time to process stop request */
         for (retries = MAX_WAIT; retries > 0; retries--) {
                 doorbell_set(driver_ccb);
-                udelay(1);
+                udelay(WAIT_TIME);
                 if (!(ioread32(&device_ccb->send_ctrl) & (1 << CTRL_BITPOS_A))
                     &&
                     !(ioread32(&device_ccb->recv_ctrl) & (1 << CTRL_BITPOS_A)))
@@ -312,7 +312,7 @@ static int ilo_ccb_open(struct ilo_hwinfo *hw, struct ccb_data *data, int slot)
         for (i = MAX_WAIT; i > 0; i--) {
                 if (ilo_pkt_dequeue(hw, driver_ccb, SENDQ, &pkt_id, NULL, NULL))
                         break;
-                udelay(1);
+                udelay(WAIT_TIME);
         }
 
         if (i) {
@@ -759,7 +759,7 @@ static void __exit ilo_exit(void)
         class_destroy(ilo_class);
 }
 
-MODULE_VERSION("1.0");
+MODULE_VERSION("1.1");
 MODULE_ALIAS(ILO_NAME);
 MODULE_DESCRIPTION(ILO_NAME);
 MODULE_AUTHOR("David Altobelli <david.altobelli@hp.com>");