USB: mark "reject" field of struct urb as atomic_t

[linux-2.6-omap-h63xx.git] / drivers / usb / core / urb.c

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 1f68af9db3f7d6bed13bcab914eb238b638b5bee..b5e9948698bfcdbc20bc0f7f93e293069d04272d 100644 (file)
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -10,7 +10,6 @@
 
 #define to_urb(d) container_of(d, struct urb, kref)
 
-static DEFINE_SPINLOCK(usb_reject_lock);
 
 static void urb_destroy(struct kref *kref)
 {
@@ -131,9 +130,7 @@ void usb_anchor_urb(struct urb *urb, struct usb_anchor *anchor)
        urb->anchor = anchor;
 
        if (unlikely(anchor->poisoned)) {
-               spin_lock(&usb_reject_lock);
-               urb->reject++;
-               spin_unlock(&usb_reject_lock);
+               atomic_inc(&urb->reject);
        }
 
        spin_unlock_irqrestore(&anchor->lock, flags);
@@ -565,16 +562,12 @@ void usb_kill_urb(struct urb *urb)
        might_sleep();
        if (!(urb && urb->dev && urb->ep))
                return;
-       spin_lock_irq(&usb_reject_lock);
-       ++urb->reject;
-       spin_unlock_irq(&usb_reject_lock);
+       atomic_inc(&urb->reject);
 
        usb_hcd_unlink_urb(urb, -ENOENT);
        wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
 
-       spin_lock_irq(&usb_reject_lock);
-       --urb->reject;
-       spin_unlock_irq(&usb_reject_lock);
+       atomic_dec(&urb->reject);
 }
 EXPORT_SYMBOL_GPL(usb_kill_urb);
 
@@ -606,9 +599,7 @@ void usb_poison_urb(struct urb *urb)
        might_sleep();
        if (!(urb && urb->dev && urb->ep))
                return;
-       spin_lock_irq(&usb_reject_lock);
-       ++urb->reject;
-       spin_unlock_irq(&usb_reject_lock);
+       atomic_inc(&urb->reject);
 
        usb_hcd_unlink_urb(urb, -ENOENT);
        wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
@@ -617,14 +608,10 @@ EXPORT_SYMBOL_GPL(usb_poison_urb);
 
 void usb_unpoison_urb(struct urb *urb)
 {
-       unsigned long flags;
-
        if (!urb)
                return;
 
-       spin_lock_irqsave(&usb_reject_lock, flags);
-       --urb->reject;
-       spin_unlock_irqrestore(&usb_reject_lock, flags);
+       atomic_dec(&urb->reject);
 }
 EXPORT_SYMBOL_GPL(usb_unpoison_urb);