diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2012-07-11 11:21:25 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 16:50:13 -0700 |
| commit | c83e1a9ff68a6535b81c40dc8fda99348ab480fb (patch) | |
| tree | fea3bfe22caed0144933c8b065f2bf16937fd8fb /drivers/usb/host/ehci.h | |
| parent | 15be105b4a18c461b95fa683907f6da6deae1b75 (diff) | |
USB: EHCI: don't refcount QHs
This patch (as1567) removes ehci-hcd's reference counting of QH
structures. It's not necessary to refcount these things because they
always get deallocated at exactly one spot in ehci_endpoint_disable()
(except for two special QHs, ehci->async and ehci->dummy) and are
never used again.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci.h')
| -rw-r--r-- | drivers/usb/host/ehci.h | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index 85c3572155d..f7a59f5d70c 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -350,16 +350,7 @@ struct ehci_qh { struct ehci_qtd *dummy; struct ehci_qh *reclaim; /* next to reclaim */ - struct ehci_hcd *ehci; unsigned long unlink_time; - - /* - * Do NOT use atomic operations for QH refcounting. On some CPUs - * (PPC7448 for example), atomic operations cannot be performed on - * memory that is cache-inhibited (i.e. being used for DMA). - * Spinlocks are used to protect all QH fields. - */ - u32 refcount; unsigned stamp; u8 needs_rescan; /* Dequeue during giveback */ |