pm_qos: Get rid of the allocation in pm_qos_add_request()

All current users of pm_qos_add_request() have the ability to supply
the memory required by the pm_qos routines, so make them do this and
eliminate the kmalloc() with pm_qos_add_request().  This has the
double benefit of making the call never fail and allowing it to be
called from atomic context.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: mark gross <markgross@thegnar.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 4 insertions, 5 deletions

diff --git a/drivers/net/igbvf/netdev.c b/drivers/net/igbvf/netdev.c
index 5e2b2a8c56c6..add6197d3bcb 100644
--- a/drivers/net/igbvf/netdev.c
+++ b/drivers/net/igbvf/netdev.c
@@ -48,7 +48,7 @@
 #define DRV_VERSION "1.0.0-k0"
 char igbvf_driver_name[] = "igbvf";
 const char igbvf_driver_version[] = DRV_VERSION;
-struct pm_qos_request_list *igbvf_driver_pm_qos_req;
+static struct pm_qos_request_list igbvf_driver_pm_qos_req;
 static const char igbvf_driver_string[] =
                                 "Intel(R) Virtual Function Network Driver";
 static const char igbvf_copyright[] = "Copyright (c) 2009 Intel Corporation.";
@@ -2902,8 +2902,8 @@ static int __init igbvf_init_module(void)
         printk(KERN_INFO "%s\n", igbvf_copyright);
 
         ret = pci_register_driver(&igbvf_driver);
-        igbvf_driver_pm_qos_req = pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY,
-                               PM_QOS_DEFAULT_VALUE);
+        pm_qos_add_request(&igbvf_driver_pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
+                           PM_QOS_DEFAULT_VALUE);
 
         return ret;
 }
@@ -2918,8 +2918,7 @@ module_init(igbvf_init_module);
 static void __exit igbvf_exit_module(void)
 {
         pci_unregister_driver(&igbvf_driver);
-        pm_qos_remove_request(igbvf_driver_pm_qos_req);
-        igbvf_driver_pm_qos_req = NULL;
+        pm_qos_remove_request(&igbvf_driver_pm_qos_req);
 }
 module_exit(igbvf_exit_module);