USB: make usb_mark_last_busy use pm_runtime_mark_last_busy

Since the runtime-PM core already defines a .last_busy field in
device.power, this patch uses it to replace the .last_busy field
defined in usb_device and uses pm_runtime_mark_last_busy to implement
usb_mark_last_busy.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

6 files changed, 13 insertions, 19 deletions

diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
index eda2d2c2545..0a63e968c68 100644
--- a/drivers/usb/core/driver.c
+++ b/drivers/usb/core/driver.c
@@ -27,7 +27,6 @@
 #include <linux/usb.h>
 #include <linux/usb/quirks.h>
 #include <linux/usb/hcd.h>
-#include <linux/pm_runtime.h>
 
 #include "usb.h"
 
@@ -1329,7 +1328,7 @@ int usb_resume(struct device *dev, pm_message_t msg)
                         pm_runtime_disable(dev);
                         pm_runtime_set_active(dev);
                         pm_runtime_enable(dev);
-                        udev->last_busy = jiffies;
+                        usb_mark_last_busy(udev);
                         do_unbind_rebind(udev, DO_REBIND);
                 }
         }
@@ -1397,7 +1396,7 @@ void usb_autosuspend_device(struct usb_device *udev)
 {
         int     status;
 
-        udev->last_busy = jiffies;
+        usb_mark_last_busy(udev);
         status = pm_runtime_put_sync(&udev->dev);
         dev_vdbg(&udev->dev, "%s: cnt %d -> %d\n",
                         __func__, atomic_read(&udev->dev.power.usage_count),
@@ -1482,7 +1481,7 @@ void usb_autopm_put_interface(struct usb_interface *intf)
         struct usb_device       *udev = interface_to_usbdev(intf);
         int                     status;
 
-        udev->last_busy = jiffies;
+        usb_mark_last_busy(udev);
         atomic_dec(&intf->pm_usage_cnt);
         status = pm_runtime_put_sync(&intf->dev);
         dev_vdbg(&intf->dev, "%s: cnt %d -> %d\n",
@@ -1512,8 +1511,8 @@ void usb_autopm_put_interface_async(struct usb_interface *intf)
         unsigned long           last_busy;
         int                     status = 0;
 
-        last_busy = udev->last_busy;
-        udev->last_busy = jiffies;
+        last_busy = udev->dev.power.last_busy;
+        usb_mark_last_busy(udev);
         atomic_dec(&intf->pm_usage_cnt);
         pm_runtime_put_noidle(&intf->dev);
 
@@ -1554,7 +1553,7 @@ void usb_autopm_put_interface_no_suspend(struct usb_interface *intf)
 {
         struct usb_device       *udev = interface_to_usbdev(intf);
 
-        udev->last_busy = jiffies;
+        usb_mark_last_busy(udev);
         atomic_dec(&intf->pm_usage_cnt);
         pm_runtime_put_noidle(&intf->dev);
 }
@@ -1641,7 +1640,7 @@ void usb_autopm_get_interface_no_resume(struct usb_interface *intf)
 {
         struct usb_device       *udev = interface_to_usbdev(intf);
 
-        udev->last_busy = jiffies;
+        usb_mark_last_busy(udev);
         atomic_inc(&intf->pm_usage_cnt);
         pm_runtime_get_noresume(&intf->dev);
 }
@@ -1697,7 +1696,7 @@ static int autosuspend_check(struct usb_device *udev)
          * enough, queue a delayed autosuspend request.
          */
         j = ACCESS_ONCE(jiffies);
-        suspend_time = udev->last_busy + udev->autosuspend_delay;
+        suspend_time = udev->dev.power.last_busy + udev->autosuspend_delay;
         if (time_before(j, suspend_time)) {
                 pm_schedule_suspend(&udev->dev, jiffies_to_msecs(
                                 round_jiffies_up_relative(suspend_time - j)));
@@ -1725,13 +1724,13 @@ static int usb_runtime_suspend(struct device *dev)
          * away.
          */
         if (status) {
-                udev->last_busy = jiffies +
+                udev->dev.power.last_busy = jiffies +
                                 (udev->autosuspend_delay == 0 ? HZ/2 : 0);
         }
 
         /* Prevent the parent from suspending immediately after */
         else if (udev->parent)
-                udev->parent->last_busy = jiffies;
+                usb_mark_last_busy(udev->parent);
 
         return status;
 }
@@ -1745,7 +1744,7 @@ static int usb_runtime_resume(struct device *dev)
          * and all its interfaces.
          */
         status = usb_resume_both(udev, PMSG_AUTO_RESUME);
-        udev->last_busy = jiffies;
+        usb_mark_last_busy(udev);
         return status;
 }
 
diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c
index 3799573bd38..b55d46070a2 100644
--- a/drivers/usb/core/hcd-pci.c
+++ b/drivers/usb/core/hcd-pci.c
@@ -19,7 +19,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
-#include <linux/pm_runtime.h>
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
 
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 61800f77dac..e70aeaf3dc1 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -38,7 +38,6 @@
 #include <asm/unaligned.h>
 #include <linux/platform_device.h>
 #include <linux/workqueue.h>
-#include <linux/pm_runtime.h>
 
 #include <linux/usb.h>
 #include <linux/usb/hcd.h>
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 27115b45edc..7c2405eccc4 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -24,7 +24,6 @@
 #include <linux/kthread.h>
 #include <linux/mutex.h>
 #include <linux/freezer.h>
-#include <linux/pm_runtime.h>
 
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index f377e49fcb3..83248742382 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -12,7 +12,6 @@
 #include <linux/ctype.h>
 #include <linux/nls.h>
 #include <linux/device.h>
-#include <linux/pm_runtime.h>
 #include <linux/scatterlist.h>
 #include <linux/usb/quirks.h>
 #include <linux/usb/hcd.h>      /* for usbcore internals */
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 35fe6ab222b..7d22b3340a7 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -20,6 +20,7 @@
 #include <linux/completion.h>   /* for struct completion */
 #include <linux/sched.h>        /* for current && schedule_timeout */
 #include <linux/mutex.h>        /* for struct mutex */
+#include <linux/pm_runtime.h>   /* for runtime PM */
 
 struct usb_device;
 struct usb_driver;
@@ -407,7 +408,6 @@ struct usb_tt;
  * @quirks: quirks of the whole device
  * @urbnum: number of URBs submitted for the whole device
  * @active_duration: total time device is not suspended
- * @last_busy: time of last use
  * @autosuspend_delay: in jiffies
  * @connect_time: time device was first connected
  * @do_remote_wakeup:  remote wakeup should be enabled
@@ -481,7 +481,6 @@ struct usb_device {
         unsigned long active_duration;
 
 #ifdef CONFIG_PM
-        unsigned long last_busy;
         int autosuspend_delay;
         unsigned long connect_time;
 
@@ -527,7 +526,7 @@ extern void usb_autopm_put_interface_no_suspend(struct usb_interface *intf);
 
 static inline void usb_mark_last_busy(struct usb_device *udev)
 {
-        udev->last_busy = jiffies;
+        pm_runtime_mark_last_busy(&udev->dev);
 }
 
 #else