From: Edmund Nadolski <edmund.nadolski@intel.com>
Date: Fri, 20 May 2011 03:17:47 +0000 (-0700)
Subject: isci: convert power control timer to sci_timer
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=0473661a125905240879456567e117ed8a58cf5d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git
isci: convert power control timer to sci_timer
Signed-off-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
index aa00cce37821..7b497f2667b7 100644
--- a/drivers/scsi/isci/host.c
+++ b/drivers/scsi/isci/host.c
@@ -1374,6 +1374,8 @@ void isci_host_deinit(struct isci_host *ihost)
del_timer_sync(&ihost->sci.port_agent.timer.timer);
+ del_timer_sync(&ihost->sci.power_control.timer.timer);
+
isci_timer_list_destroy(ihost);
}
@@ -1935,67 +1937,55 @@ static enum sci_status scic_sds_controller_initialize_phy_startup(struct scic_sd
return SCI_SUCCESS;
}
-static void scic_sds_controller_power_control_timer_start(struct scic_sds_controller *scic)
+static void power_control_timeout(unsigned long data)
{
- isci_timer_start(scic->power_control.timer,
- SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+ struct sci_timer *tmr = (struct sci_timer *)data;
+ struct scic_sds_controller *scic = container_of(tmr, typeof(*scic), power_control.timer);
+ struct isci_host *ihost = scic_to_ihost(scic);
+ struct scic_sds_phy *sci_phy;
+ unsigned long flags;
+ u8 i;
- scic->power_control.timer_started = true;
-}
+ spin_lock_irqsave(&ihost->scic_lock, flags);
-static void scic_sds_controller_power_control_timer_stop(struct scic_sds_controller *scic)
-{
- if (scic->power_control.timer_started) {
- isci_timer_stop(scic->power_control.timer);
+ if (tmr->cancel)
+ goto done;
+
+ scic->power_control.phys_granted_power = 0;
+
+ if (scic->power_control.phys_waiting == 0) {
scic->power_control.timer_started = false;
+ goto done;
}
-}
-
-static void scic_sds_controller_power_control_timer_restart(struct scic_sds_controller *scic)
-{
- scic_sds_controller_power_control_timer_stop(scic);
- scic_sds_controller_power_control_timer_start(scic);
-}
-static void scic_sds_controller_power_control_timer_handler(
- void *controller)
-{
- struct scic_sds_controller *scic;
+ for (i = 0; i < SCI_MAX_PHYS; i++) {
- scic = (struct scic_sds_controller *)controller;
+ if (scic->power_control.phys_waiting == 0)
+ break;
- scic->power_control.phys_granted_power = 0;
+ sci_phy = scic->power_control.requesters[i];
+ if (sci_phy == NULL)
+ continue;
- if (scic->power_control.phys_waiting == 0) {
- scic->power_control.timer_started = false;
- } else {
- struct scic_sds_phy *sci_phy = NULL;
- u8 i;
-
- for (i = 0;
- (i < SCI_MAX_PHYS)
- && (scic->power_control.phys_waiting != 0);
- i++) {
- if (scic->power_control.requesters[i] != NULL) {
- if (scic->power_control.phys_granted_power <
- scic->oem_parameters.sds1.controller.max_concurrent_dev_spin_up) {
- sci_phy = scic->power_control.requesters[i];
- scic->power_control.requesters[i] = NULL;
- scic->power_control.phys_waiting--;
- scic->power_control.phys_granted_power++;
- scic_sds_phy_consume_power_handler(sci_phy);
- } else {
- break;
- }
- }
- }
+ if (scic->power_control.phys_granted_power >=
+ scic->oem_parameters.sds1.controller.max_concurrent_dev_spin_up)
+ break;
- /*
- * It doesn't matter if the power list is empty, we need to start the
- * timer in case another phy becomes ready.
- */
- scic_sds_controller_power_control_timer_start(scic);
+ scic->power_control.requesters[i] = NULL;
+ scic->power_control.phys_waiting--;
+ scic->power_control.phys_granted_power++;
+ scic_sds_phy_consume_power_handler(sci_phy);
}
+
+ /*
+ * It doesn't matter if the power list is empty, we need to start the
+ * timer in case another phy becomes ready.
+ */
+ sci_mod_timer(tmr, SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+ scic->power_control.timer_started = true;
+
+done:
+ spin_unlock_irqrestore(&ihost->scic_lock, flags);
}
/**
@@ -2019,7 +2009,13 @@ void scic_sds_controller_power_control_queue_insert(
* stop and start the power_control timer. When the timer fires, the
* no_of_phys_granted_power will be set to 0
*/
- scic_sds_controller_power_control_timer_restart(scic);
+ if (scic->power_control.timer_started)
+ sci_del_timer(&scic->power_control.timer);
+
+ sci_mod_timer(&scic->power_control.timer,
+ SCIC_SDS_CONTROLLER_POWER_CONTROL_INTERVAL);
+ scic->power_control.timer_started = true;
+
} else {
/* Add the phy in the waiting list */
scic->power_control.requesters[sci_phy->phy_index] = sci_phy;
@@ -2224,10 +2220,7 @@ static enum sci_status scic_controller_set_mode(struct scic_sds_controller *scic
static void scic_sds_controller_initialize_power_control(struct scic_sds_controller *scic)
{
- struct isci_host *ihost = scic_to_ihost(scic);
- scic->power_control.timer = isci_timer_create(ihost,
- scic,
- scic_sds_controller_power_control_timer_handler);
+ sci_init_timer(&scic->power_control.timer, power_control_timeout);
memset(scic->power_control.requesters, 0,
sizeof(scic->power_control.requesters));
diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h
index deb0ee031f27..2be935fa6af2 100644
--- a/drivers/scsi/isci/host.h
+++ b/drivers/scsi/isci/host.h
@@ -83,10 +83,9 @@ struct scic_power_control {
bool timer_started;
/**
- * This field is the handle to the driver timer object. This timer is used to
- * control when the directed attached disks can consume power.
+ * Timer to control when the directed attached disks can consume power.
*/
- void *timer;
+ struct sci_timer timer;
/**
* This field is used to keep track of how many phys are put into the