PM QOS update

This patch changes the string based list management to a handle base
implementation to help with the hot path use of pm-qos, it also renames
much of the API to use "request" as opposed to "requirement" that was
used in the initial implementation.  I did this because request more
accurately represents what it actually does.

Also, I added a string based ABI for users wanting to use a string
interface.  So if the user writes 0xDDDDDDDD formatted hex it will be
accepted by the interface.  (someone asked me for it and I don't think
it hurts anything.)

This patch updates some documentation input I got from Randy.

Signed-off-by: markgross <mgross@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/net/wireless/ipw2x00/ipw2100.c b/drivers/net/wireless/ipw2x00/ipw2100.c
index 9b72c45a7748..2b05fe5e994c 100644
--- a/drivers/net/wireless/ipw2x00/ipw2100.c
+++ b/drivers/net/wireless/ipw2x00/ipw2100.c
@@ -174,6 +174,8 @@ that only one external action is invoked at a time.
 #define DRV_DESCRIPTION "Intel(R) PRO/Wireless 2100 Network Driver"
 #define DRV_COPYRIGHT   "Copyright(c) 2003-2006 Intel Corporation"
 
+struct pm_qos_request_list *ipw2100_pm_qos_req;
+
 /* Debugging stuff */
 #ifdef CONFIG_IPW2100_DEBUG
 #define IPW2100_RX_DEBUG        /* Reception debugging */
@@ -1739,7 +1741,7 @@ static int ipw2100_up(struct ipw2100_priv *priv, int deferred)
         /* the ipw2100 hardware really doesn't want power management delays
          * longer than 175usec
          */
-        pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100", 175);
+        pm_qos_update_request(ipw2100_pm_qos_req, 175);
 
         /* If the interrupt is enabled, turn it off... */
         spin_lock_irqsave(&priv->low_lock, flags);
@@ -1887,8 +1889,7 @@ static void ipw2100_down(struct ipw2100_priv *priv)
         ipw2100_disable_interrupts(priv);
         spin_unlock_irqrestore(&priv->low_lock, flags);
 
-        pm_qos_update_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100",
-                        PM_QOS_DEFAULT_VALUE);
+        pm_qos_update_request(ipw2100_pm_qos_req, PM_QOS_DEFAULT_VALUE);
 
         /* We have to signal any supplicant if we are disassociating */
         if (associated)
@@ -6669,7 +6670,7 @@ static int __init ipw2100_init(void)
         if (ret)
                 goto out;
 
-        pm_qos_add_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100",
+        ipw2100_pm_qos_req = pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
                         PM_QOS_DEFAULT_VALUE);
 #ifdef CONFIG_IPW2100_DEBUG
         ipw2100_debug_level = debug;
@@ -6692,7 +6693,7 @@ static void __exit ipw2100_exit(void)
                            &driver_attr_debug_level);
 #endif
         pci_unregister_driver(&ipw2100_pci_driver);
-        pm_qos_remove_requirement(PM_QOS_CPU_DMA_LATENCY, "ipw2100");
+        pm_qos_remove_request(ipw2100_pm_qos_req);
 }
 
 module_init(ipw2100_init);