mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
516 lines
15 KiB
Diff
516 lines
15 KiB
Diff
--- a/drivers/net/wireless/ath/ar9170/usb.c
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+++ b/drivers/net/wireless/ath/ar9170/usb.c
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@@ -96,6 +96,225 @@ static struct usb_device_id ar9170_usb_i
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};
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MODULE_DEVICE_TABLE(usb, ar9170_usb_ids);
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+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
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+
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+/**
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+ * usb_unpoison_anchored_urbs - let an anchor be used successfully again
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+ * @anchor: anchor the requests are bound to
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+ *
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+ * Reverses the effect of usb_poison_anchored_urbs
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+ * the anchor can be used normally after it returns
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+ */
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+void usb_unpoison_anchored_urbs(struct usb_anchor *anchor)
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+{
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+ unsigned long flags;
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+ struct urb *lazarus;
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+
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+ spin_lock_irqsave(&anchor->lock, flags);
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+ list_for_each_entry(lazarus, &anchor->urb_list, anchor_list) {
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+ usb_unpoison_urb(lazarus);
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+ }
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+ //anchor->poisoned = 0; /* XXX: cannot backport */
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+ spin_unlock_irqrestore(&anchor->lock, flags);
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+}
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+EXPORT_SYMBOL_GPL(usb_unpoison_anchored_urbs);
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+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) */
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+
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+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28))
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+
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+/*
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+ * Compat-wireless notes for USB backport stuff:
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+ *
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+ * urb->reject exists on 2.6.27, the poison/unpoison helpers
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+ * did not though. The anchor poison does not exist so we cannot use them.
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+ *
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+ * USB anchor poising seems to exist to prevent future driver sumbissions
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+ * of usb_anchor_urb() to an anchor marked as poisoned. For older kernels
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+ * we cannot use that, so new usb_anchor_urb()s will be anchored. The down
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+ * side to this should be submission of URBs will continue being anchored
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+ * on an anchor instead of having them being rejected immediately when the
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+ * driver realized we needed to stop. For ar9170 we poison URBs upon the
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+ * ar9170 mac80211 stop callback(), don't think this should be so bad.
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+ * It mean there is period of time in older kernels for which we continue
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+ * to anchor new URBs to a known stopped anchor. We have two anchors
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+ * (TX, and RX)
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+ */
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+
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+#if 0
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+/**
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+ * usb_poison_urb - reliably kill a transfer and prevent further use of an URB
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+ * @urb: pointer to URB describing a previously submitted request,
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+ * may be NULL
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+ *
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+ * This routine cancels an in-progress request. It is guaranteed that
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+ * upon return all completion handlers will have finished and the URB
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+ * will be totally idle and cannot be reused. These features make
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+ * this an ideal way to stop I/O in a disconnect() callback.
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+ * If the request has not already finished or been unlinked
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+ * the completion handler will see urb->status == -ENOENT.
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+ *
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+ * After and while the routine runs, attempts to resubmit the URB will fail
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+ * with error -EPERM. Thus even if the URB's completion handler always
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+ * tries to resubmit, it will not succeed and the URB will become idle.
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+ *
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+ * This routine may not be used in an interrupt context (such as a bottom
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+ * half or a completion handler), or when holding a spinlock, or in other
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+ * situations where the caller can't schedule().
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+ *
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+ * This routine should not be called by a driver after its disconnect
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+ * method has returned.
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+ */
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+void usb_poison_urb(struct urb *urb)
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+{
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+ might_sleep();
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+ if (!(urb && urb->dev && urb->ep))
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+ return;
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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+ spin_lock_irq(&usb_reject_lock);
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+#endif
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+ ++urb->reject;
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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+ spin_unlock_irq(&usb_reject_lock);
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+#endif
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+ /*
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+ * XXX: usb_hcd_unlink_urb() needs backporting... this is defined
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+ * on usb hcd.c but urb.c gets access to it. That is, older kernels
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+ * have usb_hcd_unlink_urb() but its not exported, nor can we
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+ * re-implement it exactly. This essentially dequeues the urb from
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+ * hw, we need to figure out a way to backport this.
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+ */
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+ //usb_hcd_unlink_urb(urb, -ENOENT);
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+
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+ wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
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+}
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+EXPORT_SYMBOL_GPL(usb_poison_urb);
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+#endif
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+
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+void usb_unpoison_urb(struct urb *urb)
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+{
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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+ unsigned long flags;
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+#endif
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+
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+ if (!urb)
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+ return;
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+
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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+ spin_lock_irqsave(&usb_reject_lock, flags);
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+#endif
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+ --urb->reject;
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+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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+ spin_unlock_irqrestore(&usb_reject_lock, flags);
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+#endif
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+}
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+EXPORT_SYMBOL_GPL(usb_unpoison_urb);
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+
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+
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+#if 0
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+/**
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+ * usb_poison_anchored_urbs - cease all traffic from an anchor
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+ * @anchor: anchor the requests are bound to
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+ *
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+ * this allows all outstanding URBs to be poisoned starting
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+ * from the back of the queue. Newly added URBs will also be
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+ * poisoned
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+ *
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+ * This routine should not be called by a driver after its disconnect
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+ * method has returned.
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+ */
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+void usb_poison_anchored_urbs(struct usb_anchor *anchor)
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+{
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+ struct urb *victim;
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+
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+ spin_lock_irq(&anchor->lock);
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+ // anchor->poisoned = 1; /* XXX: Cannot backport */
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+ while (!list_empty(&anchor->urb_list)) {
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+ victim = list_entry(anchor->urb_list.prev, struct urb,
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+ anchor_list);
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+ /* we must make sure the URB isn't freed before we kill it*/
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+ usb_get_urb(victim);
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+ spin_unlock_irq(&anchor->lock);
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+ /* this will unanchor the URB */
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+ usb_poison_urb(victim);
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+ usb_put_urb(victim);
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+ spin_lock_irq(&anchor->lock);
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+ }
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+ spin_unlock_irq(&anchor->lock);
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+}
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+EXPORT_SYMBOL_GPL(usb_poison_anchored_urbs);
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+#endif
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+
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+/**
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+ * usb_get_from_anchor - get an anchor's oldest urb
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+ * @anchor: the anchor whose urb you want
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+ *
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+ * this will take the oldest urb from an anchor,
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+ * unanchor and return it
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+ */
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+struct urb *usb_get_from_anchor(struct usb_anchor *anchor)
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+{
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+ struct urb *victim;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&anchor->lock, flags);
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+ if (!list_empty(&anchor->urb_list)) {
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+ victim = list_entry(anchor->urb_list.next, struct urb,
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+ anchor_list);
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+ usb_get_urb(victim);
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+ spin_unlock_irqrestore(&anchor->lock, flags);
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+ usb_unanchor_urb(victim);
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+ } else {
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+ spin_unlock_irqrestore(&anchor->lock, flags);
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+ victim = NULL;
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+ }
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+
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+ return victim;
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+}
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+
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+EXPORT_SYMBOL_GPL(usb_get_from_anchor);
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+
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+/**
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+ * usb_scuttle_anchored_urbs - unanchor all an anchor's urbs
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+ * @anchor: the anchor whose urbs you want to unanchor
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+ *
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+ * use this to get rid of all an anchor's urbs
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+ */
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+void usb_scuttle_anchored_urbs(struct usb_anchor *anchor)
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+{
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+ struct urb *victim;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&anchor->lock, flags);
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+ while (!list_empty(&anchor->urb_list)) {
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+ victim = list_entry(anchor->urb_list.prev, struct urb,
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+ anchor_list);
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+ usb_get_urb(victim);
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+ spin_unlock_irqrestore(&anchor->lock, flags);
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+ /* this may free the URB */
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+ usb_unanchor_urb(victim);
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+ usb_put_urb(victim);
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+ spin_lock_irqsave(&anchor->lock, flags);
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+ }
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+ spin_unlock_irqrestore(&anchor->lock, flags);
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+}
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+
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+EXPORT_SYMBOL_GPL(usb_scuttle_anchored_urbs);
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+
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+/**
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+ * usb_anchor_empty - is an anchor empty
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+ * @anchor: the anchor you want to query
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+ *
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+ * returns 1 if the anchor has no urbs associated with it
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+ */
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+int usb_anchor_empty(struct usb_anchor *anchor)
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+{
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+ return list_empty(&anchor->urb_list);
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+}
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+
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+EXPORT_SYMBOL_GPL(usb_anchor_empty);
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+
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+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28) */
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+
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static void ar9170_usb_submit_urb(struct ar9170_usb *aru)
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{
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struct urb *urb;
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--- a/net/wireless/compat-2.6.28.c
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+++ b/net/wireless/compat-2.6.28.c
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@@ -12,202 +12,8 @@
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#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,28))
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-#include <linux/usb.h>
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-
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/* 2.6.28 compat code goes here */
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-/*
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- * Compat-wireless notes for USB backport stuff:
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- *
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- * urb->reject exists on 2.6.27, the poison/unpoison helpers
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- * did not though. The anchor poison does not exist so we cannot use them.
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- *
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- * USB anchor poising seems to exist to prevent future driver sumbissions
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- * of usb_anchor_urb() to an anchor marked as poisoned. For older kernels
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- * we cannot use that, so new usb_anchor_urb()s will be anchored. The down
|
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- * side to this should be submission of URBs will continue being anchored
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- * on an anchor instead of having them being rejected immediately when the
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- * driver realized we needed to stop. For ar9170 we poison URBs upon the
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- * ar9170 mac80211 stop callback(), don't think this should be so bad.
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- * It mean there is period of time in older kernels for which we continue
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- * to anchor new URBs to a known stopped anchor. We have two anchors
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- * (TX, and RX)
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- */
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-
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-#if 0
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-/**
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- * usb_poison_urb - reliably kill a transfer and prevent further use of an URB
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- * @urb: pointer to URB describing a previously submitted request,
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- * may be NULL
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- *
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- * This routine cancels an in-progress request. It is guaranteed that
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- * upon return all completion handlers will have finished and the URB
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- * will be totally idle and cannot be reused. These features make
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- * this an ideal way to stop I/O in a disconnect() callback.
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- * If the request has not already finished or been unlinked
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- * the completion handler will see urb->status == -ENOENT.
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- *
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- * After and while the routine runs, attempts to resubmit the URB will fail
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- * with error -EPERM. Thus even if the URB's completion handler always
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- * tries to resubmit, it will not succeed and the URB will become idle.
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- *
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- * This routine may not be used in an interrupt context (such as a bottom
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- * half or a completion handler), or when holding a spinlock, or in other
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- * situations where the caller can't schedule().
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- *
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- * This routine should not be called by a driver after its disconnect
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- * method has returned.
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- */
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-void usb_poison_urb(struct urb *urb)
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-{
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- might_sleep();
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- if (!(urb && urb->dev && urb->ep))
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- return;
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-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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- spin_lock_irq(&usb_reject_lock);
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-#endif
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- ++urb->reject;
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-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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- spin_unlock_irq(&usb_reject_lock);
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-#endif
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- /*
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- * XXX: usb_hcd_unlink_urb() needs backporting... this is defined
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- * on usb hcd.c but urb.c gets access to it. That is, older kernels
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- * have usb_hcd_unlink_urb() but its not exported, nor can we
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- * re-implement it exactly. This essentially dequeues the urb from
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- * hw, we need to figure out a way to backport this.
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- */
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- //usb_hcd_unlink_urb(urb, -ENOENT);
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-
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- wait_event(usb_kill_urb_queue, atomic_read(&urb->use_count) == 0);
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-}
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-EXPORT_SYMBOL_GPL(usb_poison_urb);
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-#endif
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-
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-void usb_unpoison_urb(struct urb *urb)
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-{
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-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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- unsigned long flags;
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-#endif
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-
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- if (!urb)
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- return;
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-
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-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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- spin_lock_irqsave(&usb_reject_lock, flags);
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-#endif
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- --urb->reject;
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-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28))
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- spin_unlock_irqrestore(&usb_reject_lock, flags);
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-#endif
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-}
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-EXPORT_SYMBOL_GPL(usb_unpoison_urb);
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-
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-
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-#if 0
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-/**
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- * usb_poison_anchored_urbs - cease all traffic from an anchor
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- * @anchor: anchor the requests are bound to
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- *
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- * this allows all outstanding URBs to be poisoned starting
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|
- * from the back of the queue. Newly added URBs will also be
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- * poisoned
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- *
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- * This routine should not be called by a driver after its disconnect
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- * method has returned.
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- */
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-void usb_poison_anchored_urbs(struct usb_anchor *anchor)
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-{
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- struct urb *victim;
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-
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- spin_lock_irq(&anchor->lock);
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- // anchor->poisoned = 1; /* XXX: Cannot backport */
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- while (!list_empty(&anchor->urb_list)) {
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- victim = list_entry(anchor->urb_list.prev, struct urb,
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- anchor_list);
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- /* we must make sure the URB isn't freed before we kill it*/
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- usb_get_urb(victim);
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- spin_unlock_irq(&anchor->lock);
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- /* this will unanchor the URB */
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- usb_poison_urb(victim);
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- usb_put_urb(victim);
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- spin_lock_irq(&anchor->lock);
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- }
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- spin_unlock_irq(&anchor->lock);
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-}
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-EXPORT_SYMBOL_GPL(usb_poison_anchored_urbs);
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-#endif
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-
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-/**
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- * usb_get_from_anchor - get an anchor's oldest urb
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- * @anchor: the anchor whose urb you want
|
|
- *
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- * this will take the oldest urb from an anchor,
|
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- * unanchor and return it
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- */
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-struct urb *usb_get_from_anchor(struct usb_anchor *anchor)
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-{
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- struct urb *victim;
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- unsigned long flags;
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-
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- spin_lock_irqsave(&anchor->lock, flags);
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- if (!list_empty(&anchor->urb_list)) {
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- victim = list_entry(anchor->urb_list.next, struct urb,
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- anchor_list);
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- usb_get_urb(victim);
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- spin_unlock_irqrestore(&anchor->lock, flags);
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- usb_unanchor_urb(victim);
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- } else {
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- spin_unlock_irqrestore(&anchor->lock, flags);
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- victim = NULL;
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- }
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-
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- return victim;
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-}
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-
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-EXPORT_SYMBOL_GPL(usb_get_from_anchor);
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-
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-/**
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- * usb_scuttle_anchored_urbs - unanchor all an anchor's urbs
|
|
- * @anchor: the anchor whose urbs you want to unanchor
|
|
- *
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- * use this to get rid of all an anchor's urbs
|
|
- */
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-void usb_scuttle_anchored_urbs(struct usb_anchor *anchor)
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-{
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- struct urb *victim;
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- unsigned long flags;
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-
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- spin_lock_irqsave(&anchor->lock, flags);
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- while (!list_empty(&anchor->urb_list)) {
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- victim = list_entry(anchor->urb_list.prev, struct urb,
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- anchor_list);
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- usb_get_urb(victim);
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- spin_unlock_irqrestore(&anchor->lock, flags);
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- /* this may free the URB */
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- usb_unanchor_urb(victim);
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- usb_put_urb(victim);
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- spin_lock_irqsave(&anchor->lock, flags);
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- }
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- spin_unlock_irqrestore(&anchor->lock, flags);
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-}
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-
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-EXPORT_SYMBOL_GPL(usb_scuttle_anchored_urbs);
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-
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-/**
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- * usb_anchor_empty - is an anchor empty
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- * @anchor: the anchor you want to query
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- *
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- * returns 1 if the anchor has no urbs associated with it
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- */
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-int usb_anchor_empty(struct usb_anchor *anchor)
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-{
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- return list_empty(&anchor->urb_list);
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-}
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-
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-EXPORT_SYMBOL_GPL(usb_anchor_empty);
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-
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-
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void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar)
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{
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/*
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--- a/net/wireless/compat-2.6.29.c
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|
+++ b/net/wireless/compat-2.6.29.c
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|
@@ -12,29 +12,7 @@
|
|
|
|
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
|
|
|
|
-#include <linux/usb.h>
|
|
-
|
|
-/**
|
|
- * usb_unpoison_anchored_urbs - let an anchor be used successfully again
|
|
- * @anchor: anchor the requests are bound to
|
|
- *
|
|
- * Reverses the effect of usb_poison_anchored_urbs
|
|
- * the anchor can be used normally after it returns
|
|
- */
|
|
-void usb_unpoison_anchored_urbs(struct usb_anchor *anchor)
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|
-{
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- unsigned long flags;
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- struct urb *lazarus;
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-
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- spin_lock_irqsave(&anchor->lock, flags);
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- list_for_each_entry(lazarus, &anchor->urb_list, anchor_list) {
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- usb_unpoison_urb(lazarus);
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- }
|
|
- //anchor->poisoned = 0; /* XXX: cannot backport */
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|
- spin_unlock_irqrestore(&anchor->lock, flags);
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-}
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-EXPORT_SYMBOL_GPL(usb_unpoison_anchored_urbs);
|
|
-
|
|
+/* 2.6.29 compat code goes here */
|
|
|
|
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29) */
|
|
|
|
--- a/include/net/compat-2.6.28.h
|
|
+++ b/include/net/compat-2.6.28.h
|
|
@@ -9,7 +9,6 @@
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/if_ether.h>
|
|
-#include <linux/usb.h>
|
|
|
|
#ifndef ETH_P_PAE
|
|
#define ETH_P_PAE 0x888E /* Port Access Entity (IEEE 802.1X) */
|
|
@@ -37,19 +36,6 @@
|
|
#define pcmcia_parse_tuple(tuple, parse) pccard_parse_tuple(tuple, parse)
|
|
#endif
|
|
|
|
-#if 0
|
|
-extern void usb_poison_urb(struct urb *urb);
|
|
-#endif
|
|
-extern void usb_unpoison_urb(struct urb *urb);
|
|
-
|
|
-#if 0
|
|
-extern void usb_poison_anchored_urbs(struct usb_anchor *anchor);
|
|
-#endif
|
|
-
|
|
-extern struct urb *usb_get_from_anchor(struct usb_anchor *anchor);
|
|
-extern void usb_scuttle_anchored_urbs(struct usb_anchor *anchor);
|
|
-extern int usb_anchor_empty(struct usb_anchor *anchor);
|
|
-
|
|
|
|
void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
|
|
|
|
--- a/include/net/compat-2.6.29.h
|
|
+++ b/include/net/compat-2.6.29.h
|
|
@@ -8,7 +8,6 @@
|
|
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29))
|
|
|
|
#include <linux/skbuff.h>
|
|
-#include <linux/usb.h>
|
|
|
|
/**
|
|
* skb_queue_is_first - check if skb is the first entry in the queue
|
|
@@ -41,8 +40,6 @@ static inline struct sk_buff *skb_queue_
|
|
return skb->prev;
|
|
}
|
|
|
|
-extern void usb_unpoison_anchored_urbs(struct usb_anchor *anchor);
|
|
-
|
|
#endif /* (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,29)) */
|
|
|
|
#endif /* LINUX_26_29_COMPAT_H */
|